mcafe.exe is a Trojan W32.Rbot-BAV. mcafe.exe opens a back door on IRC channels. mcafe.exe spreads via open network shares. Related files: %System%\mcafe.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill mcafe.exe process and remove mcafe.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.