BackDoor-CQQ Trojan Options

[Eryi]

I keep getting this trojan called BackDoor-CQQ over and over again in different sections of my computer. I'm not even on a website and the trojan comes. I want to know where does it come from and why it comes rapidly throughout a day. My Virusscanner (McAfee VirusScan) detects them and deletes them automatically, but I'm kind of getting pissed off 'cause it the notification keeps popping up, telling me they automatically deleted the trojan. They also tell me where the trojan tried infecting. Today it was my Volume Information section.