the file is related to OnLineGames/AuCrypt/Oliga/Monga infection… this kind of malware spreads over the autorun hole in MS Windows (you’ve probably got infected from a USB stick)… it is possible, that avast covers only a part of your infection, because these malware families are developed (and evolved) quickly… it would be helpful to run a HiJackThis scan and post the results here… we’ll guide you what to do in next steps and it will also help us to make the detections better…