Virus on CoD5 Multiplayer Startup

[deleted]

Just recently I reached level 65 in CoD5 for PC and decided to go into Prestige mode. I accidently clicked on a server with Powerleveling enabled and raised 19 levels from the start of prestige. I turned off CoD5 for lunch, and went back. Upon loading the startup screen in multiplayer I heard the ding noise (that you hear when a download is finished) with my Avira Virus finding a Trojan in my PC labeled TR/Crypt.ZPACK.Gen. The Trojan is recognized as the most common of it's kind according to Avira's statistics. I am currently running a virus scan to search for any other errors. This only occurs in CoD5 because I was playing DoD:S, L4D, and CS:S later this evening. If anyone has thoughts or ideas on how to help me PLEASE TELL ME!! I WANT TO CONTINUE MY COD5 CAREER!!!

[Nobahar]

I got this too on my brother's computer. It is a false positive from Avira according to people, but it is annoying. I have just disable it, since telling Avira to ignore won't work. No wonder I replaced Avira with BitDefender on my computers.