Ambitious malware variant signed with fake digital signature
Posted on 21.02.2011
New Zeus variants and spam campaigns that try to spread them far and wide are almost a daily occurrence, but once in a while some get more attention by security researchers than others.

This latest one has been singled out by Avira's researcher simply because the malware variant has been signed with a digital certificate issued to the company - or so it may seem at first glance.

Upon closer inspection, one can notice that something is wrong:


"Microsoft Windows shows a note 'A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider'," points out the researcher. "Donít misunderstand that message Ė it means that this certificate is not created by Avira GmbH and therefore itís not a stolen certificate."

This is not the first time that a Zeus variant has been discovered hiding behind a seemingly legitimate digital certificate - last time, Zeus peddlers used the digital signature for a Kaspersky tool designed to clean computers from precisely that Trojan family.






Spotlight

What IT skills are in demand?

IT security tops the list of skills that teams need most, and one out of five reported having difficulty finding skilled talent for cloud initiatives. Companies are also looking for pros who have skills in network engineering, systems engineering, IT architecture and network operations.


Weekly newsletter

Reading our newsletter every Monday will keep you up-to-date with security news.
  



Daily digest

Receive a daily digest of the latest security news.
  
DON'T
MISS

Fri, Apr 17th
    COPYRIGHT 1998-2015 BY HELP NET SECURITY.   // READ OUR PRIVACY POLICY // ABOUT US // ADVERTISE //