https://www.bleepingcomputer.com/news/security/lockbit-ransomware-goes-green-uses-new-conti-based-encryptor/

The LockBit ransomware gang has again started using encryptors based on other operations, this time switching to one based on the leaked source code for the Conti ransomware.

Since its launch, the LockBit operation has gone through numerous iterations of its encryptor, starting with a custom one and moving to LockBit 3.0 (aka LockBit Black), which is derived from the BlackMatter gang's source code.