If you run random .pdf.something-files pm‘d to you on LinkedIn you probably shouldn’t use a computer anyway, no matter if it runs Linux or Windows…
this post was submitted on 21 Jan 2024
183 points (97.9% liked)
Linux
48693 readers
1394 users here now
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Rules
- Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
- No misinformation
- No NSFW content
- No hate speech, bigotry, etc
Related Communities
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
founded 5 years ago
MODERATORS
Lazarus' Operation DreamJob, also known as Nukesped, is an ongoing operation targeting people who work in software or DeFi platforms with fake job offers on LinkedIn or other social media and communication platforms.
Looks like they're going after desperate job seeking crypto bros. Even if it's not terribly effective, it's a spray and pray, so they probably got some people.
Seems to me like they are targeting people who likely have access to assets that can be easily stolen and hard to track.
Joke’s on them, I don’t use bash.
Seriously though, Linux will probably get targeted more frequently now that it is becoming more popular as a desktop OS.
But you probably have Bash? In this case, #!/bin/bash still runs it.
Yeah but according to the article it installs itself in .bash_profile.
Ok, you got me, i've only read the title.
Still good to make people aware of that, i think.
Absolutely.
So doesn't the user have to add +x to run this?
It never occurred to me before reading this comment that there actually is a use case for the execute permission. To me it was always just this annoying thing I have to do whenever I download an executable which I didn't have to do on Windows.
Fun fact, Windows has the same permission it just defaults to enabled.
No because the zip archive retains permissions of the contained files.
Hm, maybe there should be an option to always disable the executable permission when extracting
That's perhaps possible, but likely would have to be implemented in each achieving tools individually.
Ah, right
Zip too? I thought only on Windows, while tar retains unix permissions.
All archive formats do it, afaik.
But i'm sure there was an issue somewhile ago, because zip only preserves Windows permissions...
There's a bunch of zip implementations(Info-Zip, Gzip, 7-Zip, PKZip, Pigz, etc.), so perhaps an older version of one of the implementations didn't support preserving the Linux executable permission in the past.
how someone working on software and tech opens a file called "HSBC job offer.pdf.zip" is beyond me...
I’m not gonna lie. I want any job, no matter how fake, that uses a reddened North Korean “Hotel of Doom” in its literature.
Still the exploit is easier to avoid compared to windows viruses and stuff. Even with the linux popularity increasing there is already out there good solutions to prevent this kinda stuff like have SELinux installed, use firejail to run suspicious files, use proxies to visit weird sites (you can use proxychains + tor, a bit overkill but works if you don't have a local proxy), etc.
Not to mention that one of the attack vectors of this exploit requires using a systemd feature which is the sysnetd which isnt going to work on other init systems. Reason why a lot of times minimalism can be superior to just having all the features + unnecessary ones out of the box.
Wouldn't it show the icon of an executable file and ask if you want to open it or execute it?