The Gentlemen is a financially motivated ransomware-as-a-service group that emerged in early 2023 and gained significant prominence by 2025. They utilize a double-extortion model, encrypting data while threatening to leak sensitive information, often accelerating pressure tactics without extensive negotiations.
Key insights
•Targets primarily sectors like healthcare, technology, and construction, avoiding Commonwealth of Independent States entities.
•Initial access often gained through exploitation of CVE-2024-55591 in FortiOS and FortiProxy devices.
•Employs advanced tactics including BYOVD attacks for evasion and a pre-ransomware script to disable security measures.
•Maintains a database of compromised credentials to enhance targeting and operational effectiveness.
•Demonstrates a preference for rapid data publication to maximize pressure on victims.