I recently logged on to my windows 8 computer and noticed that I could no longer open any of my word files, pictures, etc. There are two new items in each of the document and picture folders titled HOWDECRYPT that provide instructions for decrypting your files by paying $500 to a tor site. I tried a system restore but the files are still there and I can't open any files. It seems like a ransomeware issue but I can't find any information about this particular one that works for removal or restoring my files. Any help or advice would be greatly appreciated.