nibie.exe is a mass-mailing worm W32.Mytob.FO@mm. nibie.exe opens a back door on TCP port 2094 or TCP port 6543. nibie.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\nibie.exe %System%\skybotx.exe Adds the value: "Windows System" = "nibie.exe" "Windows System" = "skybotx.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill nibie.exe process and remove nibie.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.