Ezt találtam, talán segít:
How to Remove Win32.AutoRun.Agent.UD Manually?
1. Remove the registry entries hidden by Win32.AutoRun.Agent.UD
If you notice that the programs on your computer are running abnormally, please check the following entries in the Registry, and directly delete the spyware-related registry entries if found.
2. It is possibly a way to load the "Win32.AutoRun.Agent.UD" malicious programs, by hiding within the system WIN.INI file and the strings "run=" and "load=", so this must be carefully checked.
3. Clean up “IE Temporary File folder” where the original carrier of spyware threats is likely stored.