msscript.exe is a TrojanStartPa-HC. msscript.exe changes browser settings for Microsoft Internet Explorer. Related files: %System%\gedit.exe %System%\msscript.exe %System%\systemr.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill msscript.exe process and remove msscript.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.