The virus could have deleted itself after grabbing what it needed to cover its tracks.
Instructions on virus removal: If these files do not exist, do not assume you weren't affected. I have been infected via the Angry Planes mod, heres how to get rid of it:
In addition you can also help secure things by downloading and installing a premium anti-virus such as my personal recommendation, BitDefender Internet Security 2015 - I will be posting links to get a free 6 month license to this when I am at my main computer. If you want to change your passwords as soon as possible before you go ahead and clean the malware then you can use a separate computer or a mobile device to do so, but please do not change your passwords on a keylogged machine.
Change all of your passwords immediately AFTER clearing the malware and don't just limit yourself to changing the password of your SocialClub account as every password will need to be changed starting with priority accounts first (payment processing sites like PayPal) - check the IP logs if they're accessible to you just for a little peace of mind that they weren't accessed by someone else. I will start by writing this at the top in big bold letters.
