Lien Vande Kelder.exe is a mass-mailing worm W32.Mytob.GN@mm. Lien Vande Kelder.exe opens a back door on TCP port 12000. Lien Vande Kelder.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\Lien Vande Kelder.exe Adds the value: "[http://]www.lienvandekelder.be/[REMOVED]... = "\Lien Vande Kelder.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill Lien Vande Kelder.exe process and remove Lien Vande Kelder.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.