fservice.exe is a Trojan.Prorat-R. fservice.exe opens a back door. Related files: %Windows%\services.exe %System%\sservice.exe %System%\fservice.exe %Windows%\ktd32.atm %System%\wininv.dll %System%\winkey.dll More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill fservice.exe process and remove fservice.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.