VERY IMPORTANT

This analysis delves into the Beast ransomware, a Ransomware-as-a-Service (RaaS) that emerged in June 2024 as a successor to Monster ransomware. The investigation focuses on a Beast ransomware server detected in March 2026, revealing the operators' toolkit and attack methodology. The toolkit includes various tools for reconnaissance, network mapping, credential theft, persistence, lateral movement, exfiltration, and impact. Notable findings include the presence of both Windows and Linux versions of Beast ransomware, indicating targeting of workstations and Linux servers on VMware ESXi hypervisors. The report highlights the importance of proactive collection of internet telemetry in identifying ransomware operators' toolkits before they can be used against targets.