-----Original Message-----
From: clamav-users-boun...@lists.clamav.net 
[mailto:clamav-users-boun...@lists.clamav.net] On Behalf Of Matus UHLAR - 
fantomas
Sent: Tuesday, September 22, 2009 7:43 AM
To: clamav-users@lists.clamav.net
Subject: Re: [Clamav-users] Zip attachment detected by clamscan but not clamd

On 21.09.09 14:44, Eric Swanson wrote:

> I am running clamav 0.95.2 with mimedefang 2.64 and sendmail 8.14.3 on
> Solaris 10.  I am finding that messages with the following are not being
> detected by clamd, but are detected by clamscan as
> Trojan.Downloader-77566.

> However, clamd (invoked from mimedefang) does not seem to pick this up at
> all.  Other similar trojans such as Email.Trojan.GZC are being detected by
> clamd.  Freshclam is updating the database normally.  Any ideas why clamd
> would miss something that clamscan detects?

clamd is invoked from mimedefang? clamd should run as a daemon. Isn't that
clamdscan? Try running clamdscan. And then, find out if clamd is allowed to
open the file you want to scan. clamd must have permissions to open
the file, which usually means that you have to add it to group mimedefang is
running under and set AllowSupplementaryGroups to true.

-- 
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Linux IS user friendly, it's just selective who its friends are...
_______________________________________________
Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net
http://www.clamav.net/support/ml



I stated the mimedefang-clamd operation poorly.  Yes, clamd is running as a 
daemon, and mimedefang is aware of clamd and feeds messages to the clamd socket.

Here are the results of clamscan and clamdscan:

bash-3.2# clamscan ENTIRE_MESSAGE 
ENTIRE_MESSAGE: Trojan.Downloader-77566 FOUND
        
----------- SCAN SUMMARY -----------
Known viruses: 623523
Engine version: 0.95.2
Scanned directories: 0
Scanned files: 1
Infected files: 1
Data scanned: 0.01 MB
Data read: 0.01 MB (ratio 1.50:1)
Time: 4.655 sec (0 m 4 s)

bash-3.2# clamdscan -v ENTIRE_MESSAGE 
/var/spool/MD-Quarantine/qdir-2009-09-21-17.00.38-001/ENTIRE_MESSAGE: OK

----------- SCAN SUMMARY -----------
Infected files: 0
Time: 0.048 sec (0 m 0 s)


Other Trojans are being detected by clamd successfully.  The problem appears to 
be with detection of Trojan.Downloader-77566 specifically.

-Eric Swanson

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Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net
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