Drive-by infection..!

According to the page you linked to, WD is supposed to be able to detect and remove that threat.   Since you followed its advice to reboot in order to complete the removal, hopefully, it did.

Running MBAM is prudent... I don't have the same faith in SAS any more.

Yes, it's a jungle out there.   Two things for consideration in the future:   when surfing unknown sites --- indeed, even when surfing known "SAFE" sites (which can be compromised without notice) --- consider using either 1) MalwareBytes Anti-EXPLOIT https://www.malwarebytes.org/antiexploit/ or 2) Sandboxie  http://sandboxie.com/

Stress that NEITHER of these will scan/remove EXISTING infections... but each is pretty good at intercepting/preventing NEW exploits as you encounter them.

Both programs offer FREE versions... for MBAE, I wouldn't even bother to "activate" the trial, just let it default to the free version.

Thanks for the good advice.

Looks like I got hosed...  [:'(]

MBAM didn't detect anything but something wasn't right. Launched SAS and it said an update was available, but "There was an error installing this update" every time I tried to install it and SAS wouldn't run.

I couldn't do anything related to settings. I could open the Update & Security pane, but clicking Check for Updates, Accounts, or Privacy wouldn't do anything. I could still open and run apps and IE11.

Launched System Restore and the most recent restore point (~10 days old) failed after ~30 min. The prior restore seems to have worked. Though  it took a couple of extra reboots before the latest MS updates would install. And the SAS update installed too.

The site I visited that started this mess was at top of the Google results and Google is usually good at screening out bad sites. So the site may have gotten compromised recently and/or very stealthily.

For what it's worth, I don't do anything critical on this PC, so if I had had to wipe/reinstall, I would have wasted a lot of time, but not lost anything irreplaceable.

Off with their hand...!

MBAM didn't detect anything but something wasn't right...

Ron,

I was assuming --- apparently erroneously --- that WD had successfully alleviated what it found.   But if you're saying (or "sensing") that things weren't right... that your system was indeed compromised... I would have suggested that you consider submitting your findings for malware analysis at the likes of SpywareHammer or Landzdown (&etc.)   At this point, having regressed back (at least) 2 restore points, I don't know how much they'd find anymore.   But something to keep in mind, next time (IF there is a "next time").

I didn't know if WD successfully removed that exploit or not, and also didn't know if the exploit had allowed something else into that system before the exploit was detected by WD.

After rebooting according to WD's instructions, the PC seemed to be running slowly. And even though MBAM found nothing, none of the Win 10 security settings screens would open, and SAS wouldn't update or run.

It's possible things just got messed up by WD removing the exploit but I wasn't willing to take a chance, so I ran the System Restore.

Scans with the updated SAS and with WD found nothing after the restore, and it seems to be running "normally" again, so I believe it's clean now. And there were no account passwords, banking info or anything else of value on that PC so I should be safe -for now.

BTW: I installed the free MBAE as you suggested but now I keep getting a pop-up saying the system is being protected by...  Is there a way to kill the pop-up or do I have to live with it unless/until I buy the paid MBAE ?

Thanks!