BYOVD Attack | Breaking Cybersecurity News | The Hacker News

Threat actors are employing a previously undocumented "defense evasion tool" dubbed AuKill that's designed to disable endpoint detection and response (EDR) software by means of a Bring Your Own Vulnerable Driver ( BYOVD ) attack. "The AuKill tool abuses an outdated version of the  driver  used by version 16.32 of the Microsoft utility,  Process Explorer , to disable EDR processes before deploying either a backdoor or ransomware on the target system," Sophos researcher Andreas Klopsch  said  in a report published last week. Incidents analyzed by the cybersecurity firm show the use of AuKill since the start of 2023 to deploy various ransomware strains such as Medusa Locker and LockBit. Six different versions of the malware have been identified to date. The oldest AuKill sample features a November 2022 compilation timestamp. The  BYOVD technique  relies on threat actors misusing a legitimate, but out-of-date and exploitable, driver signed by Microsoft (or usin

In yet another case of bring your own vulnerable driver (BYOVD) attack, the operators of the BlackByte ransomware are leveraging a flaw in a legitimate Windows driver to bypass security solutions. "The evasion technique supports disabling a whopping list of over 1,000 drivers on which security products rely to provide protection," Sophos threat researcher Andreas Klopsch  said  in a new technical write-up. BYOVD is an  attack technique  that involves threat actors abusing vulnerabilities in legitimate, signed drivers to achieve successful kernel-mode exploitation and seize control of compromised machines. Weaknesses in signed drivers have been increasingly co-opted by nation-state threat groups in recent years, including  Slingshot ,  InvisiMole ,  APT28 , and most recently, the  Lazarus Group . BlackByte, believed to be an offshoot of the  now-discontinued Conti group , is part of the big game cybercrime crews, which zeroes in on large, high-profile targets as part of

As a vCISO, you are responsible for your client's cybersecurity strategy and risk governance. This incorporates multiple disciplines, from research to execution to reporting. Recently, we published a comprehensive playbook for vCISOs, "Your First 100 Days as a vCISO – 5 Steps to Success" , which covers all the phases entailed in launching a successful vCISO engagement, along with recommended actions to take, and step-by-step examples.  Following the success of the playbook and the requests that have come in from the MSP/MSSP community, we decided to drill down into specific parts of vCISO reporting and provide more color and examples. In this article, we focus on how to create compelling narratives within a report, which has a significant impact on the overall MSP/MSSP value proposition.  This article brings the highlights of a recent guided workshop we held, covering what makes a successful report and how it can be used to enhance engagement with your cyber security clients.