Gentlemen Ransomware Exploits Vulnerable Driver to Disable Enterprise Security (2024)
In early 2024, the Gentlemen ransomware group executed a sophisticated attack leveraging a vulnerable version of the ThrottleStop.sys driver to disable antivirus and endpoint detection and response (EDR) systems. By exploiting this signed but flawed driver, the attackers were able to gain kernel-level privileges, terminate security defenses, and deploy ransomware effectively across targeted organizations. The impact resulted in rapid file encryption, significant operational disruption, and increased ransom demands as incident response capabilities were bypassed. This incident highlights the growing trend of ransomware operators abusing trusted, vulnerable drivers to evade security controls. The ease with which attackers weaponize driver vulnerabilities underscores the urgent need for organizations to enhance driver and device control, patch management, and implement Zero Trust security strategies.
Kill Chain