Use this decrypter if your files have been encrypted but not renamed. The malware identifies itself as BadBlock both in the red ransomware screen as well as in the ransomnote "Help Decrypt.html" that can be found on the Desktop.
You will need an encrypted file as well as its unencrypted version. Just select both the encrypted and original version at the same time and drag and drop them onto the decrypter executable. The key finding process may take a while, so please be patient.