Re: [clamav-users] possible to use clamscan to search for strings in mail?

2019-03-06 Thread Alex
Great, thanks!

 All I had to do was writing an new.ldb rule with hex patterns to
search for:

Sig1;Target:4;(0|1|2|3|4|5|6|7|8|9|10|11|12);e2e5ede0eb;c2c5cdc0cb;fe32
;de32;d7c5cec1cc;f7e5eee1ec;c032;e032;d0b2d0b5d0bdd0b0d0bb;d092d095d09d
d090d09b;d18e32;d0ae32;7576656e616c

 and run clamscan:

clamscan -f ~/list -i -d ~/new.ldb

On Wed, 2019-03-06 at 10:50 +0100, Arnaud Jacques wrote:
> Hello Alex,
> 
> 
> > We do have a large IMAP ~200GB, and in order to find letters 
> > containing specific "keyword",
> > grep is not good because of base64 encoding. So the idea is to
> > look 
> > through with antivirus scanner for "virus" inside letters, which
> > is 
> > not a virus but a (not sure, may be) "bytecode signature" =
> > "keyword"
> > 
> > Sounds good? A link to a howto will be appreciated.
> 
> Yes it is possible. Please see the official documentation :
> https://www.clamav.net/documents/creating-signatures-for-clamav
> 

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Re: [clamav-users] possible to use clamscan to search for strings in mail?

2019-03-06 Thread Arnaud Jacques

Hello Alex,


We do have a large IMAP ~200GB, and in order to find letters 
containing specific "keyword",
grep is not good because of base64 encoding. So the idea is to look 
through with antivirus scanner for "virus" inside letters, which is 
not a virus but a (not sure, may be) "bytecode signature" = "keyword"


Sounds good? A link to a howto will be appreciated.


Yes it is possible. Please see the official documentation :
https://www.clamav.net/documents/creating-signatures-for-clamav

--
Cordialement / Best regards,

Arnaud Jacques
Gérant de SecuriteInfo.com

Téléphone : +33-(0)3.44.39.76.46
E-mail : a...@securiteinfo.com
Site web : https://www.securiteinfo.com
Facebook : https://www.facebook.com/pages/SecuriteInfocom/132872523492286
Twitter : @SecuriteInfoCom

Securiteinfo.com
La Sécurité Informatique - La Sécurité des Informations.
266, rue de Villers
60123 Bonneuil en Valois


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[clamav-users] possible to use clamscan to search for strings in mail?

2019-03-06 Thread Alex
Hi all,

is it worth trying? 

We do have a large IMAP ~200GB, and in order to find letters containing
specific "keyword",
grep is not good because of base64 encoding. So the idea is to look
through with antivirus scanner for "virus" inside letters, which is not
a virus but a (not sure, may be) "bytecode signature" = "keyword"

Sounds good? A link to a howto will be appreciated.

Thanks.

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https://lists.clamav.net/mailman/listinfo/clamav-users


Help us build a comprehensive ClamAV guide:
https://github.com/vrtadmin/clamav-faq

http://www.clamav.net/contact.html#ml