Unfortunately, I spoke too soon. I guess you all were correct in assuming it's not completely gone. Task manager and regedit became disabled as soon as I restarted my computer. I removed AVG in an attempt to see if that was indeed what was stopping TM and RE. Unfortunatley, it seems they're still locked. QuickFix worked again, however, I'd like to completely remove this malware, as I'm sure it can do more damage than simply blocking these two utilities.
What do you all suggest I try?