After cleaning up a friend's computer, I watched them get back on it. The first thing they did was go to Facebook. There was an advertisement that was clearly disguised to look like a Facebook notification claiming that they had a new friend request. Without hesitation they clicked on it, and thus began the process of re-infecting their system. It turned out to be very instructional, at least. I explained to them how being asked to copy and paste commands into an Administrator command prompt isn't a normal part of inviting a new friend on Facebook. Crisis averted. But it was kind of mind-blowing to see that Meta allowed those ads on their platform in the first place. I realized that even I had become a bit sheltered due to using uBlock Origin on Firefox for years, given how good of a job it does.