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Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

krebsonsecurity.com

71–80 of 229 posts

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#71
post #4

If you make your machine look like a malware execution sandbox, a lot of malware will terminate to avoid being analyzed. This is just part of the cat and mouse game.

Most windows servers are virtualised these days so I'm not sure this would work anymore. It might look at other indicators though

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#72

Earlier quoted context omitted.

Is there any downside to unironically doing this? Seems like it'd actually work.

It’s not much harder to just harden your system to not be vulnerable in the first place, and that protects your from a lot more.

Agreed - like using a non admin account.

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#73

Earlier quoted context omitted.

Also, if you identify as Russian or write Russian in the chats or mails to them, they will de-crypt your systems for free. I wonder how that works in this era of AI translation. Not quite the same but I remember there was a Russian shareware author who gave free licenses to Russians.

> I wonder how that works in this era of AI translation Simple translation isn’t enough to show cultural proximity. Patterns of speech are different. You can try to use AI to do the entire conversation, but e.g. Claude will refuse to give you exact phrases, since he is correctly assuming it is a social engineering attack.

Do you mean that one can't use AI to learn a foreign language in its everyday form?

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#74
post #50

Earlier quoted context omitted.

There's nothing magical about the Linux security architecture, when it comes to malware, aside from abysmal Linux market share. If it were popular it would be targeted. That's not to say there's no value. It's a case of security by obscurity, at best. The Unix security model is much more simplistic than Windows NT. Everybody disables SELinux so there's no meaningful capabilities functionality. Assuming you actually d…

"Everybody disables SELinux" That implies you are probably using a RH jobbie. With no working whatsover, I assert that many more Linux desktops will be rocking apparmor or no kernel security module. Oh and no I don't disable SELinux, except as a quick check to see if that is what is causing issues. Obviously I'm not everyone, but I am someone.

I haven't used desktop Linux in a number of years, but back when I did I'd see disabling SELinux was a common recommendation. I hope things are getting better.

On the Linux application hosting front the majority of vendor-supported garbage I have the displeasure of supporting that runs outside of Docker disables SELinux as a matter of course.

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#75
post #47

The best anti malware on any version of windows has always been to make your default account you use everyday a non admin account. You also need to create a separate account (can just be a local account) that is a full administrator. Make sure you use a different password. Anytime you need to install something or run powershell/CMD as admin it will popup and ask for the separate login of the admin account. This is ba…

> If an admin elevation popup happens when you haven't triggered it then you probably know something is wrong. And most malware will not be able to install. Malware can still do a lot without "installation". Running as an unprivileged user, it can still do anything to/with the filesystem that the user would be able to do, and will (on most normal setups) be able to make outbound Internet connections without limitatio…

This is true but defense is a multi layered approach and even the built in Microsoft stuff (like Defender AV) have massively improved.

I would argue most malware comes down to uneducated users doing the wrong thing - but that's a whole different can of worms :-)

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#76

The best anti malware on any version of windows has always been to make your default account you use everyday a non admin account. You also need to create a separate account (can just be a local account) that is a full administrator. Make sure you use a different password. Anytime you need to install something or run powershell/CMD as admin it will popup and ask for the separate login of the admin account. This is ba…

> The best anti malware on any version of windows has always been to make your default account you use everyday a non admin account. In the early 2000s up thru about 2012 I'd agree with you. Post-Vista malware adapted to UAC and now all malware works well as a normal user. Any data your normal user can access (local or on a remote CIFS server) is fair game for ransomware. Limiting administrator rights doesn't do anyt…

It will help stop the spread quite a bit however (even if it can access user local data). There's a reason escalation path attacks are still the gold standard (start small and move up).

You can also run something like applocker and whitelist all the apps you use.

Also instead of separate physical boxes why not just use a VM ?

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#77
post #66

Earlier quoted context omitted.

> The best anti malware on any version of windows has always been to make your default account you use everyday a non admin account. In the early 2000s up thru about 2012 I'd agree with you. Post-Vista malware adapted to UAC and now all malware works well as a normal user. Any data your normal user can access (local or on a remote CIFS server) is fair game for ransomware. Limiting administrator rights doesn't do anyt…

What are these "quasi-malicious customized versions of Chrome" you're referring to?

Confused by that as well - what version of chrome can be installed without admin?

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#79
post #66

Earlier quoted context omitted.

> The best anti malware on any version of windows has always been to make your default account you use everyday a non admin account. In the early 2000s up thru about 2012 I'd agree with you. Post-Vista malware adapted to UAC and now all malware works well as a normal user. Any data your normal user can access (local or on a remote CIFS server) is fair game for ransomware. Limiting administrator rights doesn't do anyt…

What are these "quasi-malicious customized versions of Chrome" you're referring to?

Edit: I should have said "Chromium", not Chrome. They are repackages of Chromium, usually with functionality to send browsing activity to a third party.

"Wave Browser" is the common one that comes to mind immediately. I have several flagged in the "endpoint security" software I support, though.

The workflow is: (1) User wants some software functionality they don't have, (2) they search-engine using keywords like "convert Word to PDF", (3) they find a program that promises to do the thing they want, (4) they download it and click thru any warnings because they "want the thing", and (5) they end up with persistent per-user malware installed in their "AppData" folder.

Re: Many ransomware strains will abort if they detect a Russian keyboard installed (2021)

#80

Earlier quoted context omitted.

It sounds like you just described what User Account Control (UAC) has been doing since Windows Vista (2006).

There are UAC bypasses. Microsoft has repeatedly stated that UAC isn't actually a security boundary. It's better to run a daily driver account as a limited user and only elevate when you overtly need it. (It's even better to use a separate login, as opposed to "Run As...)

Exactly - UAC is like a poor man's Sudo and I never really got the point of it. There is a reason so many people tried to disable it.

Daily driver as limited user should be the windows default even if it makes use ability more confusing.

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