Msdev32.exe is a mass-mailing worm W32.Mytob.EH@mm. Msdev32.exe opens a back door on IRC channal. Msdev32.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\msdev32.exe Adds the value: "WINDOWS SYSTEM" = "msdev32.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill msdev32.exe process and remove msdev32.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.