https://www.bleepingcomputer.com/news/security/us-indicts-black-kingdom-ransomware-admin-for-microsoft-exchange-attacks/

A 36-year-old Yemeni national, who is believed to be the developer and primary operator of 'Black Kingdom' ransomware, has been indicted by the United States for conducting 1,500 attacks on Microsoft Exchange servers.

The suspect, Rami Khaled Ahmed, is accused of deploying the Black Kingdom malware on roughly 1,500 computers in the United States and abroad, demanding ransom payments of $10,000 in Bitcoin.