mswfp.dll is a Trojan.LdPinch-DH. mswfp.dll opens a back door. mswfp.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\sox.exe %System%\mswfp.dll More info: http://www.sophos.com/virusinfo/analyses... Removal: Remove mswfp.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.