u/Chikans

Hey guys. Any idea how to clean this? I've tried 91% iso, bleach, soap, anything I could think of and these black stains will not move.

At first I wasnt sure what they were but now I think it might be resin? I smoke at my desk and I think some resin may have gotten on the microfiber cloth that sits on my desk and then on the controller....

Any assistance would be appreciated.