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Network Security Snort-Users
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Re: [Snort-users] writing virus signatures

Subject: Re: [Snort-users] writing virus signatures
Date: Wed, 25 May 2005 09:53:33 -0500
The bleeding snort guy's have already done the work for you.
http://www.bleedingsnort.com/bleeding-virus.rules

DISCLAIMER: The ClamAV preproc is not meant to be a replacement for
Mail Gateway AV scanners.  We are looking at fragments of files, not
the whole thing.  In which case we are unable to look inside the
contents of zip files etc.

Regards,

Will
On 5/25/05, Siddhartha Jain <sid@netmagicsolutions.com> wrote:
Hi,

I am trying to write a signature for the mytob virus. I have the ClamAV
signature for the virus but clam extracts the .exe from the .zip file
and then does a match so the clam signature seems useless.

How do I identify the base64 string in the mytob zip file that uniquely
identifies the virus?

- Siddhartha



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