I downloaded something from torrent . After that I installed that. When that completed , my doc and pfd files had extra extension “.hese” and a new window was popping up again and again with address:- “www.goodcaster.com”. Areadme file also was there with them, in which it was written that your files are safe and are highly encrypted you need a decryption key and software for that you have to pay $900+ . It also removed my antivirus and My windows defenders is also off which I can’t turn on. Please someone help me. I tried to scan it with Malwarebytes software which gets around 300 infected files but still nothing changed.