I would suggest Zemana, excellent detection and free version available.
You can also use Eset online dcsnner, free with excellent signature, also used by pros.
As offline scanner, Emsisoft emergency Kit.
Hitmanpro I just learned is mainly used to detect malware in infected system and doesn't scan all files, mostly/only executable ones. I also recommend it but it's true that after the trial time you need a license to delete what it found.
Norton power eraser is also very good.
If you suspect you have something, I would ran a deep scan with Zemana, then Eset (enable pup, pua, archive scan), then hitmanpro, norton, adwcleaner.
Malwarebytes? Why not, but I was disappointed by it's detection in the last months.