A third version of Downadup dubbed “W32.Downadup.C” has been identified, and is a modular component for machines currently infected with Downadup. The new variant gives infected machines more powerful instructions to disable antivirus software and analysis tools, among other actions. It’s not attempting to self-replicate and appears to behave more like a Trojan than a worm, says Vincent Weafer of Symantec Security Response.

Source:→ PC World