Commamd.exe is a Trojan.Joex. Commamd.exe changes the Internet Explorer home page. Commamd.exe disables the Windows Task Manager. Related files: %Windir%\SVOHOST.EXE %System%\commamd.exe %System%\lsasa.exe Adds the value: "ctfnom.exe" = "%Windir%\SVOHOST.exe" "Shell" = "Explorer.exe commamd.exe" "command" = "%System%\lsasa.exe "%1"" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill commamd.exe process and remove commamd.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.