FBI Releases Master Decryption Keys for Grandcrab Ransomware In an FBI Flash Alert, the FBI has released the master decryption keys for the Gandcrab Ransomware versions 4, 5, 5.0.4, 5.1, and 5.2. Using these keys, any individual or organization can create and release their very own GandCrab decryptor.: https://www.bleepingcomputer.com/ne...ster-decryption-keys-for-gandcrab-ransomware/