On Thu, 26 Aug 2004 23:32:56 +0200
Daniel Lord <[EMAIL PROTECTED]> wrote:

> Hi List,
> 
> just put something together to aid me in generating signatures
> for my database. Perhaps someone likes it. Just use your favorit 
> hex editor (vim :%!xxd) and get a good offset value.
> 
> ./siggen virus.exe 0FF337
> 
> you get a 300 character signature which you (probably) have to cut a
> bit and give it an appropriate name.

Such a method may lead to false positives. The CVS version of ClamAV
allows users to create their own signatures for a static malware in a
very simple manner - by using MD5 hashes.

The format is

MD5:Size:MalwareName[:Alias1,Alias2,Alias3,...,AliasN]

Example:

[EMAIL PROTECTED]:/tmp/malware$ ls -l
total 969
-rw-r--r--  1 zolw zolw 990208 Aug 27 00:43 test.exe

[EMAIL PROTECTED]:/tmp/malware$ md5sum test.exe 
dfcd1da74cd5ec997f5f311800919e29  test.exe

The signature is

dfcd1da74cd5ec997f5f311800919e29:990208:Test-Signature

Save it in a *.hdb file and install in your clamav-db directory.

-- 
   oo    .....         Tomasz Kojm <[EMAIL PROTECTED]>
  (\/)\.........         http://www.ClamAV.net/gpg/tkojm.gpg
     \..........._         0DCA5A08407D5288279DB43454822DC8985A444B
       //\   /\              Fri Aug 27 00:40:29 CEST 2004

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