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Security
Malware Analysis
TrojanZipperPOC and ESET signatures Case Study
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<blockquote data-quote="MacDefender" data-source="post: 885830" data-attributes="member: 83059"><p>FWIW a few weeks later, every one of the samples in my OP is detected by at least a dozen engines on VT. It's interesting to see the reaction. Yet once again, subtle modification to the code results in evading the detection again.</p><p></p><p>At the end of the day, the point I was trying to make with these POCs was that this is a test of zero-day suspicious behaviors, not how quickly signatures can be written to flag this. I can find infinite ways to express in code this end result of launching 7zip to encrypt a file. The bulletproof way of stopping this attack is to detect this suspicious invocation of 7zip's CLI tool.</p></blockquote><p></p>
[QUOTE="MacDefender, post: 885830, member: 83059"] FWIW a few weeks later, every one of the samples in my OP is detected by at least a dozen engines on VT. It's interesting to see the reaction. Yet once again, subtle modification to the code results in evading the detection again. At the end of the day, the point I was trying to make with these POCs was that this is a test of zero-day suspicious behaviors, not how quickly signatures can be written to flag this. I can find infinite ways to express in code this end result of launching 7zip to encrypt a file. The bulletproof way of stopping this attack is to detect this suspicious invocation of 7zip's CLI tool. [/QUOTE]
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