hleader_dll.dll is a Trojan.Lodear. hleader_dll.dll attempts to download remote files. Related files: %System%\hloader_exe.exe %System%\hleader_dll.dll Adds the value: "auto__hloader__key" = "%System%\hloader_exe.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Remove hleader_dll.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.