BYOVD (Bring Your Own Vulnerable Driver) attacks exploit vulnerabilities in legitimate drivers to bypass security measures, allowing attackers to manipulate kernel-level resources directly. These attacks can disable security systems and enable encryption or data theft, notably used by the Cuba ransomware group, which has caused significant financial damage. Effective mitigation strategies include updating old operating systems, auditing kernel drivers, implementing strict permissions for driver loading, and using behavioral monitoring tools. Regular simulations of such attacks can help organizations validate their defenses.
https://cymulate.com/blog/defending-against-bring-your-own-vulnerable-driver-byovd-attacks/