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<blockquote data-quote="cruelsister" data-source="post: 427827" data-attributes="member: 7463"><p>MM- the real interesting malware lately comes in an AutoIT package. They've been using what I call a Failsafer routine- the initial malware file when run on the victims system will spawn a daughter in some random directory and delete itself; the daughter will then spawn a daughter of its own in a different random directory prior to suiciding, etc. Of course all use algorithmic obfuscation to try to hide. Finally (after many steps) the payload is dropped somewhere with a deobfuscating Python script and the intended infection can proceed. It's a real issue for the forensic guys to determine exactly what the original vector was, especially if any of the daughters were on a time-delay.</p><p></p><p>A detection problem to be sure without any sort of dynamic analysis.</p></blockquote><p></p>
[QUOTE="cruelsister, post: 427827, member: 7463"] MM- the real interesting malware lately comes in an AutoIT package. They've been using what I call a Failsafer routine- the initial malware file when run on the victims system will spawn a daughter in some random directory and delete itself; the daughter will then spawn a daughter of its own in a different random directory prior to suiciding, etc. Of course all use algorithmic obfuscation to try to hide. Finally (after many steps) the payload is dropped somewhere with a deobfuscating Python script and the intended infection can proceed. It's a real issue for the forensic guys to determine exactly what the original vector was, especially if any of the daughters were on a time-delay. A detection problem to be sure without any sort of dynamic analysis. [/QUOTE]
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