Yesterday I downloaded some plugins from the sister site. Today I noticed when installing some seperate programs that a disk image had been mounted without me knowing, 'PosteRazor'. I unmounted and continued with my day, just now another disk image, 'YoYo Runner'. Both disk images correspond to programs on my computer, but programs I haven't used in years. I'm worried that this may be due to a virus, I don't know what else would mount random drives.
I am on mac Big Sur.

 

The feature that opens the same windows and apps after startup has been really buggy in the last systems. I've never seen it open up dmg's, but there's always a first.

If it was malware, I'd think it to be buggy malware too