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The “Cuba Ransomware” hacking group extorted over $60 million between December 2021 and August 2022, according to warnings from the U.S. Federal Bureau of Investigation (FBI) and Cybersecurity and Infrastructure Security Agency (CISA).

This group was blamed by the Government of Montenegro for a significant cyber attack last summer. The warning from the FBI and CISA follows a previous alert issued in December 2021, which reported that the group had gained nearly $44 million from targeting critical infrastructure sectors in the U.S., as stated by the CDM portal.

– Since then, the “Cuba Ransomware” group has earned an additional $60 million from 100 organizations worldwide, almost half of which were among these victims, reports “Techcrunch.com” based on the FBI and CISA document.

The FBI’s December 2021 report indicated that the number of U.S. entities compromised by “Cuba Ransomware” had doubled, with both demands and payments on the rise. In August, this gang was linked to an attack on Montenegro’s government systems and other critical infrastructure, including electricity, plumbing, and transport.

During the attack, the “Cuba Ransomware” group claimed to have taken “financial documentation, correspondence with bank employees, accounting files, balance sheets, tax documents, and source code” from the Montenegrin parliament. The FBI and CISA highlighted that the gang has recently carried out attacks in both the United States and the UK.