First and of the utmost importance is that you are never to test malware samples on your host PC.This should only be done in a virtual environment or a separate dedicated testing PC.
Next thing you need to do is enable UAC to at least the default setting but preferably max.
How were you infected in the last 3 months? Testing Malware samples?
I would strongly suggest implementing a good Antivirus program such as AVAST Free,etc. or a paid AV and or security suite and uninstalling Malware Hunter.
What 3rd Party Firewall are you using?
AVAST Free or similar plus Windows Firewall is a good free combination.
Consider adding an on demand scanner(s) such as those suggested already.
Replace AdBlock Plus with uBlock Origin and add HTTPS Everywhere to Firefox.
Make sure CCleaner is updated to the latest version.
Add some type of system & data backup solution as others have already suggested.
Important data should also be backed up to an external drive.
Thanks for sharing your config