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