Security News

Kali Linux 2023.2 released: New tools, a pre-built Hyper-V image, a new audio stack, and more!
2023-05-31 07:06

Offensive Security has released Kali Linux 2023.2, the latest version of its popular penetration testing and digital forensics platform.Aside from updates for existing tools, a new Kali version usually comes with new tools.

New GobRAT Remote Access Trojan Targeting Linux Routers in Japan
2023-05-29 09:50

Linux routers in Japan are the target of a new Golang remote access trojan called GobRAT. "Initially, the attacker targets a router whose WEBUI is open to the public, executes scripts possibly by using vulnerabilities, and finally infects the GobRAT," the JPCERT Coordination Center said in a report published today. The compromise of an internet-exposed router is followed by the deployment of a loader script that acts as a conduit for delivering GobRAT, which, when launched, masquerades as the Apache daemon process to evade detection.

New Buhti ransomware gang uses leaked Windows, Linux encryptors
2023-05-25 10:00

A new ransomware operation named 'Buhti' uses the leaked code of the LockBit and Babuk ransomware families to target Windows and Linux systems, respectively. Blacktail uses the Windows LockBit 3.0 builder that a disgruntled developer leaked on Twitter in September 2022.

VirusTotal AI code analysis expands Windows, Linux script support
2023-05-15 19:54

Google has added support for more scripting languages to VirusTotal Code Insight, a recently introduced artificial intelligence-based code analysis feature. While launched only with support for analyzing a subset of PowerShell files, Code Insight can now also spot malicious Batch, Command Prompt, Shell, and VBScript scripts.

New 'MichaelKors' Ransomware-as-a-Service Targeting Linux and VMware ESXi Systems
2023-05-15 10:09

A new ransomware-as-service operation called MichaelKors has become the latest file-encrypting malware to target Linux and VMware ESXi systems as of April 2023. "In fact, VMware goes as far as to claim it's not required. This, combined with the popularity of ESXi as a widespread and popular virtualization and management system, makes the hypervisor a highly attractive target for modern adversaries."

New Stealthy Variant of Linux Backdoor BPFDoor Emerges from the Shadows
2023-05-12 13:24

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.

Stealthier version of Linux BPFDoor malware spotted in the wild
2023-05-11 22:02

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.

New Linux kernel NetFilter flaw gives attackers root privileges
2023-05-09 16:49

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.

Linux version of RTM Locker ransomware targets VMware ESXi servers
2023-04-27 16:20

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.

RTM Locker's First Linux Ransomware Strain Targeting NAS and ESXi Hosts
2023-04-27 10:15

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.