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Using hashes to find Linux malware is a waste of time. Unfortunately, it's still common to recommend doing it. In this video I'll show you how to trivially change a Linux binary to evade detection using cryptographic hashes with this elite command: echo -ne '\x0'

29,640 次观看 • 2 年前 •via X (Twitter)

4 条评论

Jaded Yuki 的头像
Jaded Yuki2 年前

Use the fuzz! You can use the hashes on reports to show what you looked at. Fuzzy matching, string comparisons, good yara rules, all better options 👩🏽‍💻

Craig Rowland - Agentless Linux Security 的头像
Craig Rowland - Agentless Linux Security2 年前

Sadly, fuzzy hashes are slow/resource intensive doing it across many files.

DJSnackcakes 的头像
DJSnackcakes2 年前

So outside of the coventional hashing and procedural hashing checks, what would be a better menthod? I get sandboxing malware can be effective but won't that give it a chance to escape the enviroment?

Craig Rowland - Agentless Linux Security 的头像
Craig Rowland - Agentless Linux Security2 年前

@WhitfieldsDad Basically they will only work for low-hanging fruit. I think heuristics of malware activity work best.

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