I picked up the FBI MoneyPac virus on Wednesday. I re-booted using Control/Alt/Delete and found my computer still locked. So I went to a second computer and Googled the deal. I was directed to do a System Restore in Safe Mode (which I accessed by using the F8 key during boot up). I restored back to Oct. 10th - one week before the attack. Once the FBI lockdown was gone, I did a full scan using McAfee Security Center. It came back clean. So . . . is it gone? Do I need to do more? Should I use Malwarebytes in conjunction with McAfee? Sorry if I'm repeating questions already dealt with, but I'm a bit insecure here.
System Restore has probably solved that particular problem. You may need to do some checks for McAfee and Microsoft updates, and then run a McAfee full scan. Scanning with Malwarebytes is also advisable.