Avast Decryption Tool for Jigsaw can unlock Jigsaw, a ransomware strain that's named after the movie character ?The Jigsaw Killer?.Several variants of this ransomware use the Jigsaw Killer's picture in the ransom screen making it easier to spot.Encrypted files will have one of the following extensions: .kkk, .btc, .gws, .J, .encrypted, .porno, .payransom, .pornoransom, .epic, .xyz, .versiegelt, .encrypted, .payb, .pays, .payms, .paymds, .paymts, .paymst, .payrms, .payrmts, .paymrts, .paybtcs, .fun, .hush, .uk-dealer@sigaint.org, or .gefickt.After encrypting your files, one of the screens will look similar to the screenshots below.