Avast Decryption Tool for FindZip unlocks the FindZip ransomware strain that spreads on Mac OS X (version 10.11 or newer). The encryption is based on creating ZIP files - each encrypted file is a ZIP archive containing the original document. All the Avast Decryption Tools are available in one zip here.
Encrypted files will have the .crypt extension.
After encrypting your files, several files are created on the user's desktop, with name variants of DECRYPT.txt, HOW_TO_DECRYPT.txt, and README.txt. They are all identical, containing the message seen in the screenshots below.