A few days ago, I mistyped a web address into Firefox and was sent to a website that said my computer was infected with something and I had to do X, Y, and Z to get rid of it. I instead left the website and did nothing, as both Malware Bytes and Windows Defender came back negative (The website in question is wowsreplays(DOT)com, I meant to go to wowreplays(DOT)com). Since then, I have had these random pop-ups appear towards the upper-left hand section of my screen, only to disappear the next instant without displaying anything in the pop-up - too quick for me to screencapture. I have noticed no other symptoms besides this, and the computer is otherwise running fine for the moment. Attached are the requested logs. Thank you in advance for any assistance, and I look forward to getting whatever is running in the background of my computer off of my system.
FRST.txt
Addition.txt