Troj/Agent-JQG

Got trojan Troj/Agent-JQG
It is a file named winupgro.exe in the "c:\Documents and Settings\miaow\Application Data\drivers\winupgro.exe" folder. Sophos says it is a sure sign of a Troj/Agent-JQG. Causes bluescreens by dropping random system dll's and exe's. Booted from a Live CD and deleted the file, also cleaned the registry. However, reappears again in the same folder and under the same filename. It's got to be somewere else. Please, help!!!
ESET NOD Antivirus 4.0.424.0 found nothing suspicious about this file. A full sustem scan gave no results either ... (virus signature database version 4086 20090519)
I also zipped the infected file and uploaded to rapidshare for you to be able to deal with it, here's download link:

~Link removed. No links to possible malware are to be posted on the forums.~

 

Oh, gush, didn't notice this article on their website! Thanks!