Havd you downloaded the casual_games.exe that you (or someone else with access to your computer) are aware of ?
Adware, isn't as a virus as such, but warrants investigation (hence the above question), the detection is also adware-gen. The -gen indicates a generic signature, which is trying to catch multiple variants of the same thing with one signature.
So the detection needs to be confirmed if you are aware of this common_games.exe file and it has been on your system for some while. This can't be done with the file in the chest, so you would need to export it (not restore) from the chest to a temporary location, see bottom paragraph.
- Upload to
VirusTotal - Multi engine on-line virus scanner and report the findings of these files here.
Create a folder called Suspect in the C:\ drive, e.g. C:\Suspect. Now exclude that folder in the Standard Shield, Customize, Advanced, Add, type (or copy and paste) C:\Suspect\* That will stop the standard shield scanning any file you put in that folder. You should now be able to export any file in the chest to this folder and upload it to VirusTotal without avast alerting.