Ninfoie.exe is a mass-mailing worm W32.Mytob.EE@mm. Ninfoie.exe opens a back door on TCP port 9832. Ninfoie.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\ninfoie.exe Adds the value: "WINDOWS SYSTEM" = "ninfoie.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill ninfoie.exe process and remove ninfoie.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.