[clamav-users] Bad detection rate

Walter Bürger walter.buerger at arscons.de
Mon Jun 23 18:16:21 UTC 2014


Steve Basford wrote:
> On Mon, June 23, 2014 4:47 pm, Walter Bürger wrote:
>> This morning I submitted the file
>> Rechnung_23_14_06_198630274520031_telekom_deutschland_GmbH.exe
>> (MD5 ad690be247dda635781e20887fcac0e7)
>> on virustotal.com.
>>
>> 4 out of 54 scanners detected a virus
>> (NOD32 named it Win32/Kryptik.CFAE)
>> but ClamAV did not detect it.
> 
> Hi Walter,
> 
> This was added to phish.ndb:
> 
> Sanesecurity.Malware.23787.ZipHeur
> 
> Added: 23 Jun 2014 09:32:40 UT
> 
> Cheers,
> 
> Steve
> Sanesecurity.com
> 
> _______________________________________________
> Help us build a comprehensive ClamAV guide:
> https://github.com/vrtadmin/clamav-faq
> http://www.clamav.net/support/ml

Thank you Steve,

I am using the Sanesecurity signatures for a long time
but at the time I wrote my post to the list, I ran clamdscan
only on the exe file. If I run clamdscan on both, the zip and the exe 
file, the malware in the zip file is detected:

clamdscan /tmp/bann/*
/tmp/bann/2014_06rechnung_12553625576148_sign.zip: 
Sanesecurity.Malware.23787.ZipHeur.UNOFFICIAL FOUND

/tmp/bann/Rechnung_23_14_06_198630274520031_telekom_deutschland_GmbH.exe: OK

----------- SCAN SUMMARY -----------
Infected files: 1
Time: 0.137 sec (0 m 0 s)


Best regards,
Walter.

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