jarule.exe is a worm W32/Sdranck-O. jarule.exe spreads via open network shares. Related files: %SysDir%\thefunk.exe %SysDir%\jarule.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill jarule.exe process and remove jarule.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.