From zdnet.com
A new malware strain targeting Windows systems is rearing its ugly head. Named SystemBC, this malware installs a proxy on infected computers.
The bad news is that SystemBC never comes alone, and usually, the presence of this malware indicates that a computer was also infected by a second threat.
Proofpoint researchers, who recently analyzed the malware, say its creators are advertising it on underground cybercrime forums to other malware authors.