Dlhost.exe is a mass-mailing worm W32.Kedebe.D@mm. Dlhost.exe tries to terminate antiviral programs installed on a user computer. Dlhost.exe monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\nbtstat.exe %System%\usrinit.exe %System%\user.exe %System%\winhlp32.exe %System%\telnet.exe %System%\locator.exe %System%\recover.exe %System%\logman.exe %System%\dlhost.exe %System%\logonui.exe %System%\winspol.exe %System%\services.exe %System%\svchost.exe %System%\lsas.exe %System%\rundl32.exe %System%\regedt32.exe %System%\winlogon.exe %System%\wuauclt.exe Adds the value: "Run" = "[PATH TO %System%\[FILE NAME]]" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill dlhost.exe process and remove dlhost.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.