I was just doing a full system scan and while it was scanning, i noticed that some of the files path was ending with [Emul].
I’m predicting here but have i just witnessed an emulator in action? 
I haven’t got any knowledge and have never run into this myself, but emulator (or emulated) sounds like a reasonable guess. What’s being emulated, of course, is a mystery … maybe a semi-honest worm or trojan? 
It certainly look like it something found/relating to the Heuristics code emulation function. However, I thought that this option was only in the real-time file system shield settings.
It would be nice to get it officially though.
:
some inactive file that might be infected of a virus cannot be identified, emulator executed the files outside the system, and identified the harmful element, emulation do not delete the whole file but remove only. the destructive, unreadable element, or bad attribute of the files.
look at the picture.
avast do not delete it but remove the irritated attribute.
this file known to be spreading but this time become a useful script in my system because the script itself is antivirus with a virus attribute. this is what you called the 100% healing file
its just my wild guess!!!
best regards!!!
It means that avast! thinks the file is packed by a (directly unsupported) runtime packer - and called the emulator to unpack the file.