The Hakbit ransomware strain encrypts its victims files using AES-256 and appends with the extension crypted The ransom note reads:Atention! all your important files were encrypted! To get your files back send 300 USD worth in Bitcoins and contact us with proof of your payment and your Unique Identifier Key. The number of files that you could have potentially lost forever can be as high as: 3396. A detailed guide is also included to help you recover your files for free.”]
Source: https://blog.emsisoft.com/en/34716/emsisoft-releases-a-new-decryptor-for-hakbit-ransomware/