I ran scans with Malwarebytes, Spybot, and SuperAntiSpyware. Spybot and SuperAntiSpyware didn't catch anything. Malwarebytes got one "Malware Trace" which it removed. When I restarted, Windows Security Center was still there, along with a new tray icon called "Blocked startup programs" claiming to be Windows Defender.
How do I get rid of this?
Edit: I looked in my Task Manager and there are a few weird processes: 2bac_xp.exe (I have a Vista, not an XP), 33aa01.exe, and avgnt.exe (which has the description Antivirus System Tray Tool). When I try to end the processes, I get the message "Access is denied".
Edited by revertspecially, 21 November 2010 - 05:13 PM.