msndrvsys.exe is a Trojan.Brogger-D. msndrvsys.exe monitors user Internet activity and bank information. It sends stolen data to a hacker site. Related files: %System%\dllcboxz.dll %System%\msndrvsys.dll %System%\msndrvsys.exe %System%\xrosario.sdf More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill msndrvsys.exe process and remove msndrvsys.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.