, legitimately. Although it doesn't seem to be so well regarded as to be woth being 'faked' as a front for full Malware, nor kept about if it is the real thing.
It's been a while since I updated Flash Player (and never of a Mac), but I think that's one of the things that (on Windows) has the "oh, please install <some partnered tool that is a poor man's AV>" in the installation dialogue with a preticked checkbox next to it that you have to remember to untick.
Or the alert that you had to update(/install) Player itself was a false-advertising thing, to start with, the gateway to a whole slew of who-knows-what other things.
The "Full System Scan" is either a legitimate thing (wouldn't be surprised) or a pop-up/advertising weasel trick (very common), and I wouldn't trust the link it gave, but I might trust going and getting it myself
, on the assumption that the usual Apple Store link hasn't been compromised/redirected, or (unlikely, but it has been done before!) Apple been fooled to put a malicious clone/nearly-legit-looking item on their libraries.With not much Mac knowledge, myself
, I would first of all advise uninstalling Flash (or 'Flash') and MacKeeper (ditto). You can always reinstall Flash again from Adobe and/or Apple Store later, however that works. Whatever real AV you have (assuming you have something..?), run that with as much thoroughness as you can configure it. (Once I make sure that possible updates to it
are done, I disconnect it from the network - assuming I trust this possibly new-to-me AV package that I may never have seen before the owner got me to look at what mess they think they got their system into.)
Does MalwareBytes have a Mac edition? Apparently
. (For your purposes, don't go for any 14 day free trial version, you're just trying to root out other stuff on your machine. Freeware version suffices, and keep an eye out for the boxes to untick. Decide whether you want RealTime/etc protection later on, when you have time to consider things more carefully.)
Mostly, though, get an actual Mac guy who knows about AV to look at your machine
, because there's probably several nuances that I don't know about. The above is just a stop-gap to try to get you past the "seems to be an obviously bad thing on my system" stage, and if anything's actually rootkitting you, you may need heavier-duty tools to deal with the problem. (While not randomly removing legitimate
software components just because you don't recognise them, like the old teddy bear
All the best. Hope a better expert in your system has something better to tell you, shortly...