checkreg.exe is a Trojan.Danmec-B. checkreg.exe opens a back door. checkreg.exe monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\checkreg.exe %System%\iisload.dll %System%\s32l.txt %System%\ws386l.ini %System%\wsl22764.dll More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill checkreg.exe process and remove checkreg.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.