Casmf.dll is an adware program Adware.CasinoClient. Casmf.dll displays advertisements. Casmf.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %ProgramFiles%\Cas\Client\casclient.exe %ProgramFiles%\Cas\Client\casmf.dll %ProgramFiles%\CasStub\casstub.exe More info: http://securityresponse.symantec.com/avc... Removal: Remove casmf.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.