msaol.dll is a Trojan.Goldun.H. msaol.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\msaol.dll %Temp%\check.bmp More info: http://securityresponse.symantec.com/avc... Removal: Remove msaol.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.