BYOVD | Breaking Cybersecurity News | The Hacker News

Cybersecurity researchers have uncovered a new malicious campaign that leverages a technique called Bring Your Own Vulnerable Driver ( BYOVD ) to disarm security protections and ultimately gain access to the infected system. "This malware takes a more sinister route: it drops a legitimate Avast Anti-Rootkit driver (aswArPot.sys) and manipulates it to carry out its destructive agenda," Trellix security researcher Trishaan Kalra said in an analysis published last week. "The malware exploits the deep access provided by the driver to terminate security processes, disable protective software, and seize control of the infected system." The starting point of the attack is an executable file (kill-floor.exe) that drops the legitimate Avast Anti-Rootkit driver, which is subsequently registered as a service using Service Control (sc.exe) to perform its malicious actions. Once the driver is up and running, the malware gains kernel-level access to the system, allowing it...

Cybersecurity researchers have discovered a new cryptojacking campaign that employs vulnerable drivers to disable known security solutions (EDRs) and thwart detection in what's called a Bring Your Own Vulnerable Driver ( BYOVD ) attack. Elastic Security Labs is tracking the campaign under the name REF4578 and the primary payload as GHOSTENGINE. Previous research from Chinese cybersecurity firm Antiy Labs has codenamed the activity as HIDDEN SHOVEL. "GHOSTENGINE leverages vulnerable drivers to terminate and delete known EDR agents that would likely interfere with the deployed and well-known coin miner," Elastic researchers Salim Bitam, Samir Bousseaden, Terrance DeJesus, and Andrew Pease said . "This campaign involved an uncommon amount of complexity to ensure both the installation and persistence of the XMRig miner." It all starts with an executable file ("Tiworker.exe"), which is used to run a PowerShell script that retrieves an obfuscated Power...

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Multiple threat actors are exploiting the recently disclosed security flaws in JetBrains TeamCity software to deploy ransomware, cryptocurrency miners, Cobalt Strike beacons, and a Golang-based remote access trojan called Spark RAT. The attacks entail the exploitation of  CVE-2024-27198  (CVSS score: 9.8) that enables an adversary to bypass authentication measures and gain administrative control over affected servers. "The attackers are then able to install malware that can reach out to its command-and-control (C&C) server and perform additional commands such as deploying Cobalt Strike beacons and remote access trojans (RATs)," Trend Micro  said  in a new report. "Ransomware can then be installed as a final payload to encrypt files and demand ransom payments from victims." Following public disclosure of the flaw earlier this month, it has been weaponized by threat actors associated with  BianLian  and  Jasmin ransomware  families, as well...