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CSO.webp 2022-10-05 12:15:00 North Korea\'s Lazarus group uses vulnerable Dell driver to blind security solutions (lien direct) The notorious North Korean state-sponsored hacker group Lazarus has begun exploiting a known vulnerability in an OEM driver developed by Dell to evade detection by security solutions. This is a prime example of why it's important to always keep third-party PC manufacturer software, which is often neglected, up to date, as well as to add vulnerable versions to blocklists.“The most notable tool delivered by the attackers was a user-mode module that gained the ability to read and write kernel memory due to the CVE-2021-21551 vulnerability in a legitimate Dell driver,” security researchers from antivirus firm ESET said in a recent report. “This is the first ever recorded abuse of this vulnerability in the wild. The attackers then used their kernel memory write access to disable seven mechanisms the Windows operating system offers to monitor its actions, like registry, file system, process creation, event tracing etc., basically blinding security solutions in a very generic and robust way.”To read this article in full, please click here Tool Vulnerability APT 38
CSO.webp 2022-08-24 12:34:00 WannaCry explained: A perfect ransomware storm (lien direct) What is WannaCry? WannaCry is a ransomware worm that spread rapidly through across a number of computer networks in May of 2017. After infecting a Windows computer, it encrypts files on the PC's hard drive, making them impossible for users to access, then demands a ransom payment in bitcoin in order to decrypt them.A number of factors made the initial spread of WannaCry particularly noteworthy: it struck a number of important and high-profile systems, including many in Britain's National Health Service; it exploited a Windows vulnerability that was suspected to have been first discovered by the United States National Security Agency; and it was tentatively linked by Symantec and other security researchers to the Lazarus Group, a cybercrime organization that may be connected to the North Korean government.To read this article in full, please click here Ransomware Vulnerability Medical Wannacry Wannacry APT 38
Last update at: 2024-05-16 09:08:06
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