I too just started having a similar issue. I myself am pretty tech savy. I built my own media system, and I have always been super careful about what i install on my system.
I recently have too ran maleware bytes and got 4 PUP.optional finds, but mine where 3 sweetpacks and one that is Pup.Optional.ASK. All fo these where too found in google section as i use Chrome.
I have had issues with Sweetpacks in the past, but was able to remove it. My issue here, much like the original poster, Maleware byutes quarantines these files, and I re-scan right away, and they pop right back up. I went into my Program uninstall section of control panel, and I see nothing sweetpacks related in the list, nor do I see anything out of the ordinary...
This...