Comysrdx.dll is a Backdoor Trojan.Riler.E. Comysrdx.dll installs as a layered service provider (LSP). Related files: %System%\sporder.dll %System%\winmedl.dll %System%\WinSSi.exe %System%\comysrdx.dll Adds the value: "AppInit_Dlls" = "comysrdx.dll" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Remove comysrdx.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.