ntrshp.dll is a Trojan.PPdoor-A. ntrshp.dll opens a back door. ntrshp.dll tries to terminate antiviral programs installed on a user computer. Related files: %System%/ntrshp.dll More info: http://www.sophos.com/virusinfo/analyses... Removal: Remove ntrshp.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.