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<blockquote data-quote="MacDefender" data-source="post: 997849" data-attributes="member: 83059"><p>I don’t remember if I made the erroneous statement but in my opinion it looks like any sample uploaded to Abuse.ch, as long as it has some set of sandbox identified suspicious behaviors, would get the “!abch” cloud signatures. Then, even a tiny modification to change the hash would cause the sample to go undetected again. </p><p></p><p>I like the idea of getting on top of zero days, BUT this seems ripe for abuse to introduce false positives simply by uploading to MalwareBazaar. Between that and biased positive results…. Those are my big worries about this approach. A targeted malware actor on your organization will NEVER start with a sample that has a known hash on public sandboxes.</p></blockquote><p></p>
[QUOTE="MacDefender, post: 997849, member: 83059"] I don’t remember if I made the erroneous statement but in my opinion it looks like any sample uploaded to Abuse.ch, as long as it has some set of sandbox identified suspicious behaviors, would get the “!abch” cloud signatures. Then, even a tiny modification to change the hash would cause the sample to go undetected again. I like the idea of getting on top of zero days, BUT this seems ripe for abuse to introduce false positives simply by uploading to MalwareBazaar. Between that and biased positive results…. Those are my big worries about this approach. A targeted malware actor on your organization will NEVER start with a sample that has a known hash on public sandboxes. [/QUOTE]
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