Cybersecurity researchers have disclosed details of an emergent ransomware family dubbed Reynolds that comes embedded with a built-in bring your own vulnerable driver (BYOVD) component for defense evasion purposes within the ransomware payload itself. BYOVD refers to an adversarial technique that abuses legitimate but flawed driver software to escalate privileges and disable Endpoint Detection and Response (EDR) solutions so that malicious activities go unnoticed. The strategy has been adopted by many ransomware groups over the years. "Normally, the BYOVD defense evasion component of an attack would involve a distinct tool that would be deployed on the system prior to the ransomware payload in order to disable security software," the Symantec and Carbon Black Threat Hunter Team said in a…