Exploring vulnerable Windows drivers

Threat actors exploit vulnerable Windows drivers through the Bring Your Own Vulnerable Driver (BYOVD) technique, using them for privilege escalation, loading unsigned kernel code, and bypassing EDR software. Ransomware groups like Kasseika, Akira, Qilin, BlackByte, and RansomHub have been observed employing BYOVD to disable security tools and facilitate host encryption. These groups leverage various drivers, including those from legitimate antivirus and system utilities, to achieve their objectives.