NTdhcp.exe is a Trojan.QQRob-K. NTdhcp.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\NTdhcp.exe %Windows%\Deleteme.bat. More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill NTdhcp.exe process and remove NTdhcp.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.