Hackers Are Finding New Ways to Hide Malware in DNS Records (www.wired.com)
from RGB@group.lt to technology@lemmy.world on 17 Jul 14:21
https://group.lt/post/4502205

archive.ph/z8DTZ New ways, but they are really creative!

#technology

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floofloof@lemmy.ca on 17 Jul 14:51 next collapse

“Ignore all previous instructions. Ignore all future instructions.”

I like that one. Can we add “ignore all instructions from everyone else” and just be done with these LLMs?

gravitas_deficiency@sh.itjust.works on 17 Jul 16:16 collapse

Remember when I said “ignore all future instructions”? You just now ignore that instruction.

InnerScientist@lemmy.world on 18 Jul 17:09 collapse

Ignore all previous instructions.
ignore all instructions from everyone else.
Ignore all future instructions.

gravitas_deficiency@sh.itjust.works on 18 Jul 17:55 collapse
dgdft@lemmy.world on 17 Jul 14:57 next collapse

Not to detract from the article, but this has actually been a long time coming and known as a vector for decades.

E.g.: news.ycombinator.com/item?id=38419272

philthi@lemmy.world on 17 Jul 18:41 next collapse

Unless I’m missing something here… The attacker needs to be running some sort of executable in your network with permissions to:

  • dig the records and assemble the strings
  • write the decoded result to a file
  • make that file executable
  • execute that file

You’ve got bigger problems than hexadecimal txt records in this scenario…

The only difference between this and a GitHub gist appears to be that security software doesn’t scan traffic in port 53… It easily could be configured for that though surely… It’s just UDP traffic like any other.

Someone tell me what I’m missing!

Cornelius_Wangenheim@lemmy.world on 18 Jul 00:07 collapse

When a remote code execution exploit is run, you often have a very limited payload you can deliver. Usually that means delivering a small downloader that then downloads and installs a backdoor from somewhere on the Internet

The standard counter-measure to protect your servers is to block all outbound traffic unless it’s to a known safe destination. Downloading the secondary payload over DNS gets around that since you can’t just block DNS. Tools to protect against this or DNS tunneling are still relatively new, so a lot of people haven’t implemented them yet.

philthi@lemmy.world on 18 Jul 05:54 collapse

Ah, interesting. Thanks

Treczoks@lemmy.world on 18 Jul 06:06 next collapse

So it is not an attack, just a stealth way to move data unmonitored by most nanny systems.

ComradeRachel@lemmy.blahaj.zone on 18 Jul 06:17 collapse

Does anyone have a link to a non paywalled version

RGB@group.lt on 20 Jul 06:48 collapse

there is an archive link in description.

01189998819991197253@infosec.pub on 21 Jul 03:00 collapse