scrigz.exe is a mass-mailing worm W32.Mytob-ER. scrigz.exe opens a back door on IRC channels. scrigz.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\scrigz.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill scrigz.exe process and remove scrigz.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.