Security News
A previously undocumented and mostly undetected variant of a Linux backdoor called BPFDoor has been spotted in the wild, cybersecurity firm Deep Instinct said in a technical report published this week. BPFDoor, first documented by PwC and Elastic Security Labs in May 2022, is a passive Linux backdoor associated with a Chinese threat actor called Red Menshen, which is known to single out telecom providers across the Middle East and Asia since at least 2021.
A new, stealthier variant of the Linux malware 'BPFDoor' has been discovered, featuring more robust encryption and reverse shell communications. BPFDoor is a stealthy backdoor malware that has been active since at least 2017 but was only discovered by security researchers around 12 months ago.
A new Linux NetFilter kernel flaw has been discovered, allowing unprivileged local users to escalate their privileges to root level, allowing complete control over a system. Netfilter is a packet filtering and network address translation framework built into the Linux kernel that is managed through front-end utilities, such as IPtables and UFW. According to a new advisory published yesterday, corrupting the system's internal state leads to a use-after-free vulnerability that can be exploited to perform arbitrary reads and writes in the kernel memory.
RTM Locker is the latest enterprise-targeting ransomware operation found to be deploying a Linux encryptor that targets virtual machines on VMware ESXi servers.At the time, Trellix and MalwareHunterTeam had only seen a Windows ransomware encryptor, but as Uptycs reported yesterday, RTM has expanded its targeting to Linux and VMware ESXi servers.
The threat actors behind RTM Locker have developed a ransomware strain that's capable of targeting Linux machines, marking the group's first foray into the open source operating system. "Its locker ransomware infects Linux, NAS, and ESXi hosts and appears to be inspired by Babuk ransomware's leaked source code," Uptycs said in a new report published Wednesday.
The Chinese nation-state group dubbed Alloy Taurus is using a Linux variant of a backdoor called PingPull as well as a new undocumented tool codenamed Sword2033. Alloy Taurus is the constellation-themed moniker assigned to a threat actor that's known for its attacks targeting telecom companies since at least 2012.
Hackers are deploying new Linux malware variants in cyberespionage attacks, such as a new PingPull variant and a previously undocumented backdoor tracked as 'Sword2033. PingPull is a RAT first documented by Unit 42 last summer in espionage attacks conducted by the Chinese state-sponsored group Gallium, also known as Alloy Taurus.
A new Lazarus campaign considered part of "Operation DreamJob" has been discovered targeting Linux users with malware for the first time. Lazarus' Operation DreamJob, also known as Nukesped, is an ongoing operation targeting people who work in software or DeFi platforms with fake job offers on LinkedIn or other social media and communication platforms.
The notorious North Korea-aligned state-sponsored actor known as the Lazarus Group has been attributed to a new campaign aimed at Linux users. The attacks are part of a persistent and long-running activity tracked under the name Operation Dream Job, ESET said in a new report published today.
The Pakistan-based advanced persistent threat actor known as Transparent Tribe used a two-factor authentication tool used by Indian government agencies as a ruse to deliver a new Linux backdoor called Poseidon. Transparent Tribe is also tracked as APT36, Operation C-Major, PROJECTM, and Mythic Leopard, and has a track record of targeting Indian government organizations, military personnel, defense contractors, and educational entities.