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Hackers Are Finding New Ways to Hide Malware in DNS Records
(www.wired.com)
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this post was submitted on 17 Jul 2025
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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.
Ah, interesting. Thanks