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Tag: byovd

5 articles

Rows of computer servers, routers, and equipment in a brightly-lit network operations area.

Ransomware Groups Exploit Citrix Bleed 2 in Supply Chain Attacks

Ransomware groups are exploiting the Citrix Bleed 2 vulnerability to launch devastating supply chain attacks, using legitimate remote access tools to spread their reach. This critical flaw has already been linked to multiple ransomware families, including Anubis, which has claimed 91 victims so far.

Analyst 207
Medical equipment and a computer terminal sit on a cluttered counter in a hospital setting.

Ransomware Gang Disables Security Software with GentleKiller Framework

Meet GentleKiller, a sneaky framework that helps ransomware gangs disable security software by targeting over 400 processes across 48 security products at the kernel level, allowing them to run unchecked. This sinister tool uses a "bring your own vulnerable driver" technique to terminate protections and clear the way for ransomware attacks.

Analyst 207
Cluttered office workstation with laptop and security software dashboard.

Gentlemen Ransomware Targets 400 Security Processes with GentleKiller EDR Framework

Meet GentleKiller, a sophisticated EDR-killer framework used by The Gentlemen ransomware-as-a-service operation to evade detection by targeting 400 security processes from 48 distinct programs. This framework comes in eight variants, each designed to mimic a legitimate product and exploit a vulnerable driver.

Analyst 207
Disrupted city transit platform with security router amid anxious bystanders.

Gentlemen Ransomware Targets EDR Defenses With Suite of Killers

Meet GentleKiller, a powerful tool used by Gentlemen ransomware to disable EDR defenses by targeting over 400 processes from 48 security vendors, allowing for smooth data theft and encryption. This sneaky utility relies on the bring your own vulnerable driver (BYOVD) technique to outsmart security engines.

Analyst 207
Windows 11 laptop on a minimalist desk with lid ajar, screen displaying ambient daylight.

Exploiting Windows Drivers Without Hardware: The BYOVD Perspective

Discover how attackers can exploit Windows drivers without hardware, turning kernel-mode driver bugs into powerful tools to bypass security controls. The Atos Threat Research Center reveals a game-changing method to manipulate reachability from userland on Windows 11 23H2.

Analyst 207