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Xavier reported a maldoc campaign using Microsoft Publisher files. These files can be analyzed just like malicious Word files. oledump.py reveals VBA macros in this sample:
The VBA macro contains calls to the chr function. This could encode a URL or some other payload:
If you want more details, I made this video. Didier Stevens |
DidierStevens 356 Posts ISC Handler |
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Sep 24th 2016 2 years ago |
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Ended up blocking publisher files VIA custom IPS rules just to be on the safe side. ORG rarely utilizes them. Sad thing is our proxy NOR our E-mail gateway listed these as identifiable file types. Forcing us down the IPS avenue.
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Anonymous |
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Sep 25th 2016 2 years ago |
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