![]() Log4Shell is an exploit for CVE-2021-44228, a critical arbitrary remote code execution flaw in the Apache Log4j 2. According to the CISA, cyber threat actors, including state-sponsored advanced persistent threat (APT) actors, have continued to exploit Log4Shell in unpatched, internet-facing VMware Horizon and. "And while patching is vital, it won't be enough if attackers have already been able to install a web shell or backdoor in the network. UK’s National Health Service (NHS) has published a cyber alert warning of an unknown threat group targeting VMware Horizon deployments with Log4Shell exploits. ![]() "Log4J is installed in hundreds of software products and many organizations may be unaware of the vulnerability lurking in within their infrastructure, particularly in commercial, open-source or custom software that doesn't have regular security support," commented Sean Gallagher, Sophos senior security researcher. The security team of the UK National Health Service (NHS) said that it detected an unknown threat actor using the Log4Shell vulnerability to hack VMWare Horizon servers and plant web shells for future attacks. In addition, the researchers uncovered evidence of reverse shell deployment designed to collect device and backup information. (credit: Getty Images) Hackers aligned with the government of Iran are exploiting the critical Log4j vulnerability to infect unpatched VMware users with ransomware, researchers said on Thursday. vmem extensions, according to an analysis by French cloud company OVH. "While z0Miner, JavaX, and some other payloads were downloaded directly by the web shells used for initial compromise, the Jin bots were tied to the use of Sliver, and used the same wallets as Mimo - suggesting these three malware were used by the same actor," the researchers say. In the ransomware attacks that surged over the weekend, threat actors exploited the flaw to hack ESXi servers and deploy a piece of malware that encrypts files associated with virtual machines, including files with the. We’re sharing our observed activities and indicators of compromise (IOCs) related to this activity. Simple steps can make the difference between losing your online accounts or maintaining what is now a precious commodity: Your privacy.Ī PowerShell URL connected to this both campaigns suggests there may also be a link, although that is uncertain. On Monday, Microsoft published a warning about a new campaign from a China-based actor it tracks as DEV-0401 to exploit the Log4Shell vulnerability on VMware Horizon systems exposed on the. Attackers are actively targeting VMware Horizon servers vulnerable to Apache Log4j CVE-2021-44228 (Log4Shell) and related vulnerabilities that were patched in December 2021. Cyber security 101: Protect your privacy from hackers, spies, and the government ![]()
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