BlackMatter Ransomware Appears to Be Spawn of DarkSide

The ‘Darkside Rebrand’ Signals the Return of More Supposedly Defunct Ransomware
The new BlackMatter ransomware operation claimed to have incorporated “the best features of DarkSide, REvil and LockBit.” Now, a security expert who obtained a BlackMatter decryptor reports that code similarities suggest “that we are dealing with a Darkside rebrand here.”