I'm a longtime FireFox user, and I usually don't fall for this stuff, virus or whatever malware, etc., but this time, in a rush to get going, I downloaded a file that luckily my antivirus software detected and warned me about it. So I allowed it to take care of it and I'm going to make sure it's gone next. If the URL of the download starts with "hxxps://johjukrawall.net", that's where the download was coming from. No idea of the potential damage and hazards. Be careful!