Talked to my wife. She tried to install a voice changer software yesterday from a link on twitter and it didn't install. This is a windows 11 PC. I see something new called WingFtpServer as a startup program. That has to be it. C'est la vie 
Since you now know the reason behind the hack there is not much to do except correct the mistakes that led to that money being lost, probably the easiest way to solve this is to use a hardware wallet from now on as it is relatively inexpensive compared to the size of your assets, now another way to deal with this is to have a PC completely dedicated to storing your wallets and that is offline all the time, with a Linux OS installed instead of windows.