CKOTS.exe is a Trojan.Bifrose-HM. CKOTS.exe opens a back door. Related files: %System%\CKOTS.exe %System%\plugin1.dat %System%\SysPr.prx More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill CKOTS.exe process and remove CKOTS.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.