All news with #deadlock tag

BYOVD Loader Used to Disable EDR in DeadLock Ransomware

🔐 Cisco Talos reported a novel Bring Your Own Vulnerable Driver (BYOVD) loader used to disable endpoint security and deliver DeadLock ransomware. The attacker exploited a Baidu Antivirus driver vulnerability (CVE-2024-51324) via a loader named EDRGay.exe and driver DriverGay.sys to terminate EDR processes at kernel level. A PowerShell payload bypassed UAC, disabled Windows Defender, stopped backup and database services, and removed all volume shadow copies. DeadLock uses a custom timing-based stream cipher and extensive kill and exclusion lists to encrypt files while avoiding system corruption.