Warning: Do not simply overwrite encrypted files with a backup while the backdoored plugin is still present. You must delete the entire malicious codebase first.
The "Babiato decryption key" implies the existence of encryption. In the context of web scripts, this usually involves SourceGuardian, IonCube, or custom obfuscation methods. The distribution of these files involves a cat-and-mouse game between original developers and distributors. babiato decryption key
Do not pay a ransom, and do not search for random "decryption keys" on forums—you will likely be scammed or infected again. Warning : Do not simply overwrite encrypted files