The two detections on VT, I would say one 'behaves like' is some form of heuristics which could be wrong, which leaves one detection so that isn't a clear cut yes this is malware. Avast may well have analysed your sample and found it to be clean, unfortunately we would never know as a) we don't get an acknowledgement of receipt, nor b) confirmation that it was a virus/malware after analysis.
DavidR
All I know is that this particular file caused lots of problems with my computer and in the end the only way I could get rid of it was with a system restore.
I had a couple of problems about the same time and I believe this or one other files disabled Avast to gain entry. (I know that has now been fixed in 4.8 )
My computer clock was reset to 365 days earlier.
I had a graphic from this particular file appear middle screen on boot up and a file "winupdater" appeared in the system files. ("winupdater" was from this file or the other file that was found)
To me that's malware or a virus.
I found the other file when I opened a folder and Avast alerted me.
I then installed Avast 4.8 and did a full boot time scan (overnight) and found 2 more files.
with Win32:Trojan-gen {UPX}.
I'm not executing this file on my computer again after experiencing the previous problems.
But I do know what will happen if I do and that to me is the acid test regardless of the fact that all of the programs (except AVG & Ikarus) on Virus-total say nothing found.
I can send you a copy of the file to run on your computer to convince you if you still have doubts.