IES4DLL.DLL is a Trojan.Goldun.G. IES4DLL.DLL monitors user Internet activity and bank information. It sends stolen data to a hacker site. Related files: %System%\IES4SERVICE.SYS %System%\IES4DLL.DLL More info: http://securityresponse.symantec.com/avc... Removal: Remove IES4DLL.DLL from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.