https://www.bleepingcomputer.com/news/security/blackcat-ransomware-s-data-exfiltration-tool-gets-an-upgrade/

The BlackCat ransomware (aka ALPHV) isn't showing any signs of slowing down, and the latest example of its evolution is a new version of the gang's data exfiltration tool used for double-extortion attacks.

BlackCat is considered a successor to Darkside and BlackMatter and is one of the most sophisticated and technically advanced Ransomware-as-a-service (RaaS) operations.