I am not an I.T. guy but I feel compelled to share what I did, maybe it helps, maybe not. My home computer began running very slow and Norton began showing my pc usage was too high. I already had Malwarebytes installed, ran it, everythings fine, ran Norton, everythings fine. Ran disc cleaner, defrag anything I had available to me. P.C. still acting funny. Opened Task manager, I didn't recognize some and decided to use MSCONFIG and close all but essential items.Started poking around music files that were not working and came across 2 of DECRYPT_INSTRUCTION and 1 of INSTALL_TOR.Did google search and found out they were really bad. Immediately I went into safe mode and began malwarebytes. It says everythings fine. Than Norton, everythings fine. Then I began manually removing all 3.I took a separate pc to use the internet and search for help. As you all now know there's not much help out there. While in safe mode, I hit start hit computer and did a search for the 2 bad files. There were thousands of hits and I deleted all. I did the same thing for files and folders. Thousands of hits. Deleted them all.Taking note of the times of these files being downloaded to me, Friday night between 8:39 and 8:52. My computer was on, suppose to be asleep. I was not home. I found this site, went into safe mode with networking and downloaded Rkill and used it. I went back into safe mode and did all the above mentioned again. The last 2 times I emptied my recycle bin, I deleted over 12,000 files. This doesn't include the other times, so I conservatively estimate I deleted 15,000 files. Its been 2 days and everything seems back to normal. I don't know if Im out of the woods yet, but I am encouraged. I have no idea how I got this. I think I caught it early, there was no icon on desktop. I lost nothing of importance to me. I hope this helps!!!!