Msdll.dll is a Trojan PWSteal.Wowcraft. Msdll.dll tries to terminate antiviral programs installed on a user computer. Msdll.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %ProgramFiles%\svhost32.exe %ProgramFiles%\rundll32.exe %ProgramFiles%\Internat.exe %System%\msdll.dll Adds the value: "load" = "[Path of the dropped file from step 1]" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Remove msdll.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.