Possible False Positive

[pondus]

reported in avast forum http://forum.avast.com/index.php?topic=123046.0

[miekiemoes]

Hi,

I don't think this is a false positive though. The Image File Executions Options key is used to run certain processes for debugging. When a certain executable is set for this key, and a debugger is defined under it, it will run the debugger instead of that process instead.

Malware has been using this approach for a while, where it creates a debugger for antivirus processes, so it runs the malicious file instead of the process (in this case AvastUI.exe) instead.

You can verify this and export the key and look if there's a debugger value + what file the valuedata is pointing to. Also see here for more info.