A novel malware campaign has been observed targeting Redis servers for initial access with the ultimate goal of mining cryptocurrency on compromised Linux hosts.
"This particular campaign involves the use of a number of novel system weakening techniques against the data store itself," Cado security researcher Matt Muir said in a technical report.
The cryptojacking attack is facilitated
A reverse engineering of the firmware running on Ivanti Pulse Secure appliances has revealed numerous weaknesses, once again underscoring the challenge of securing software supply chains.
Eclypsiusm, which acquired firmware version 9.1.18.2-24467.1 as part of the process, said the base operating system used by the Utah-based software company for the device is CentOS 6.4.
"Pulse Secure runs an 11
Cybersecurity researchers have found that it's possible for threat actors to exploit a well-known utility called command-not-found to recommend their own rogue packages and compromise systems running Ubuntu operating system.
"While 'command-not-found' serves as a convenient tool for suggesting installations for uninstalled commands, it can be inadvertently manipulated by attackers through the
The maintainers of shim have released version 15.8 to address six security flaws, including a critical bug that could pave the way for remote code execution under specific circumstances.
Tracked as CVE-2023-40547 (CVSS score: 9.8), the vulnerability could be exploited to achieve a Secure Boot bypass. Bill Demirkapi of the Microsoft Security Response Center (MSRC) has been&
Exposed Docker API endpoints over the internet are under assault from a sophisticated cryptojacking campaign called Commando Cat.
"The campaign deploys a benign container generated using the Commando project," Cado security researchers Nate Bill and Matt Muir said in a new report published today. "The attacker escapes this container and runs multiple payloads on the
Multiple security vulnerabilities have been disclosed in the runC command line tool that could be exploited by threat actors to escape the bounds of the container and stage follow-on attacks.
The vulnerabilities, tracked as CVE-2024-21626, CVE-2024-23651, CVE-2024-23652, and CVE-2024-23653, have been collectively dubbed Leaky Vessels by cybersecurity vendor Snyk.
"These container
Malicious local attackers can obtain full root access on Linux machines by taking advantage of a newly disclosed security flaw in the GNU C library (aka glibc).
Tracked as CVE-2023-6246 (CVSS score: 7.8), the heap-based buffer overflow vulnerability is rooted in glibc's __vsyslog_internal() function, which is used by syslog() and vsyslog() for system logging purposes. It's said to have
Cybersecurity researchers have identified malicious packages on the open-source Python Package Index (PyPI) repository that deliver an information stealing malware called WhiteSnake Stealer on Windows systems.
The malware-laced packages are named nigpal, figflix, telerer, seGMM, fbdebug, sGMM, myGens, NewGends, and TestLibs111. They have been uploaded by a threat actor named "WS."
"These
Three new malicious packages have been discovered in the Python Package Index (PyPI) open-source repository with capabilities to deploy a cryptocurrency miner on affected Linux devices.
The three harmful packages, named modularseven, driftme, and catme, attracted a total of 431 downloads over the past month before they were taken down.
“These packages, upon initial use, deploy a CoinMiner
Poorly secured Linux SSH servers are being targeted by bad actors to install port scanners and dictionary attack tools with the goal of targeting other vulnerable servers and co-opting them into a network to carry out cryptocurrency mining and distributed denial-of-service (DDoS) attacks.
"Threat actors can also choose to install only scanners and sell the breached IP and account credentials on
Researchers from the Vrije Universiteit Amsterdam have disclosed a new side-channel attack called SLAM that could be exploited to leak sensitive information from kernel memory on current and upcoming CPUs from Intel, AMD, and Arm.
The attack is an end-to-end exploit for Spectre based on a new feature in Intel CPUs called Linear Address Masking (LAM) as well as its analogous
A critical Bluetooth security flaw could be exploited by threat actors to take control of Android, Linux, macOS and iOS devices.
Tracked as CVE-2023-45866, the issue relates to a case of authentication bypass that enables attackers to connect to susceptible devices and inject keystrokes to achieve code execution as the victim.
"Multiple Bluetooth stacks have authentication bypass
A previously unknown Linux remote access trojan called Krasue has been observed targeting telecom companies in Thailand by threat actors to main covert access to victim networks at lease since 2021.
Named after a nocturnal female spirit of Southeast Asian folklore, the malware is "able to conceal its own presence during the initialization phase," Group-IB said in a report
Multiple threat actors, including LockBit ransomware affiliates, are actively exploiting a recently disclosed critical security flaw in Citrix NetScaler application delivery control (ADC) and Gateway appliances to obtain initial access to target environments.
The joint advisory comes from the U.S. Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI),
The Kinsing threat actors are actively exploiting a critical security flaw in vulnerable Apache ActiveMQ servers to infect Linux systems with cryptocurrency miners and rootkits.
"Once Kinsing infects a system, it deploys a cryptocurrency mining script that exploits the host's resources to mine cryptocurrencies like Bitcoin, resulting in significant damage to the infrastructure and a negative
Publicly-accessible Docker Engine API instances are being targeted by threat actors as part of a campaign designed to co-opt the machines into a distributed denial-of-service (DDoS) botnet dubbed OracleIV.
"Attackers are exploiting this misconfiguration to deliver a malicious Docker container, built from an image named 'oracleiv_latest' and containing Python malware compiled as an ELF executable
Cybersecurity researchers have warned about a Windows version of a wiper malware that was previously observed targeting Linux systems in cyber attacks aimed at Israel.
Dubbed BiBi-Windows Wiper by BlackBerry, the wiper is the Windows counterpart of BiBi-Linux Wiper, which has been put to use by a pro-Hamas hacktivist group in the wake of the Israel-Hamas war last month.
"The Windows variant [...
The Pakistan-linked threat actor known as SideCopy has been observed leveraging the recent WinRAR security vulnerability in its attacks targeting Indian government entities to deliver various remote access trojans such as AllaKore RAT, Ares RAT, and DRat.
Enterprise security firm SEQRITE described the campaign as multi-platform, with the attacks also designed to infiltrate Linux systems with a
An advanced strain of malware masquerading as a cryptocurrency miner has managed to fly the radar for over five years, infecting no less than one million devices around the world in the process.
That's according to findings from Kaspersky, which has codenamed the threat StripedFly, describing it as an "intricate modular framework that supports both Linux and Windows."
The Russian cybersecurity
A pro-Hamas hacktivist group has been observed using a new Linux-based wiper malware dubbed BiBi-Linux Wiper, targeting Israeli entities amidst the ongoing Israeli-Hamas war.
"This malware is an x64 ELF executable, lacking obfuscation or protective measures," Security Joes said in a new report published today. "It allows attackers to specify target folders and can potentially destroy an entire
A new security flaw has been disclosed in the libcue library impacting GNOME Linux systems that could be exploited to achieve remote code execution (RCE) on affected hosts.
Tracked as CVE-2023-43641 (CVSS score: 8.8), the issue is described as a case of memory corruption in libcue, a library designed for parsing cue sheet files. It impacts versions 2.2.1 and prior.
libcue is incorporated into
A new Linux security vulnerability dubbed Looney Tunables has been discovered in the GNU C library's ld.so dynamic loader that, if successfully exploited, could lead to a local privilege escalation and allow a threat actor to gain root privileges.
Tracked as CVE-2023-4911 (CVSS score: 7.8), the issue is a buffer overflow that resides in the dynamic loader's processing of the GLIBC_TUNABLES
The China-linked threat actor known as Earth Lusca has been observed targeting government entities using a never-before-seen Linux backdoor called SprySOCKS.
Earth Lusca was first documented by Trend Micro in January 2022, detailing the adversary's attacks against public and private sector entities across Asia, Australia, Europe, North America.
Active since 2021, the group has relied on
Recently disclosed security flaws impacting Juniper firewalls, Openfire, and Apache RocketMQ servers have come under active exploitation in the wild, according to multiple reports.
The Shadowserver Foundation said that it's "seeing exploitation attempts from multiple IPs for Juniper J-Web CVE-2023-36844 (& friends) targeting /webauth_operation.php endpoint," the same day a proof-of-concept (PoC)
The threat actors behind the Monti ransomware have resurfaced after a two-month break with a new Linux version of the encryptor in its attacks targeting government and legal sectors.
Monti emerged in June 2022, weeks after the Conti ransomware group shut down its operations, deliberately imitating the tactics and tools associated with the latter, including its leaked source code. Not anymore.
Vulnerable Redis services have been targeted by a "new, improved, dangerous" variant of a malware called SkidMap that's engineered to target a wide range of Linux distributions.
"The malicious nature of this malware is to adapt to the system on which it is executed," Trustwave security researcher Radoslaw Zdonczyk said in an analysis published last week.
Some of the Linux distribution SkidMap
Threat actors are using an open-source rootkit called Reptile to target Linux systems in South Korea.
"Unlike other rootkit malware that typically only provide concealment capabilities, Reptile goes a step further by offering a reverse shell, allowing threat actors to easily take control of systems," the AhnLab Security Emergency Response Center (ASEC) said in a report published this week.
"Port
Cybersecurity researchers have discovered a new post-exploitation technique in Amazon Web Services (AWS) that allows the AWS Systems Manager Agent (SSM Agent) to be run as a remote access trojan on Windows and Linux environments
"The SSM agent, a legitimate tool used by admins to manage their instances, can be re-purposed by an attacker who has achieved high privilege access on an endpoint with
Cybersecurity researchers have disclosed two high-severity security flaws in the Ubuntu kernel that could pave the way for local privilege escalation attacks.
Cloud security firm Wiz, in a report shared with The Hacker News, said the easy-to-exploit shortcomings have the potential to impact 40% of Ubuntu users.
"The impacted Ubuntu versions are prevalent in the cloud as they serve as the default
A new study conducted by Uptycs has uncovered a stark increase in the distribution of information stealing (a.k.a. infostealer or stealer) malware. Incidents have more than doubled in Q1 2023, indicating an alarming trend that threatens global organizations.
According to the new Uptycs' whitepaper, Stealers are Organization Killers, a variety of new info stealers have emerged this year, preying
In a sign that cybersecurity researchers continue to be under the radar of malicious actors, a proof-of-concept (PoC) has been discovered on GitHub, concealing a backdoor with a "crafty" persistence method.
"In this instance, the PoC is a wolf in sheep's clothing, harboring malicious intent under the guise of a harmless learning tool," Uptycs researchers Nischay Hegde and Siddartha Malladi said.
A new fileless attack dubbed PyLoose has been observed striking cloud workloads with the goal of delivering a cryptocurrency miner, new findings from Wiz reveal.
"The attack consists of Python code that loads an XMRig Miner directly into memory using memfd, a known Linux fileless technique," security researchers Avigayil Mechtinger, Oren Ofer, and Itamar Gilad said. "This is the first publicly
Details have emerged about a newly identified security flaw in the Linux kernel that could allow a user to gain elevated privileges on a target host.
Dubbed StackRot (CVE-2023-3269, CVSS score: 7.8), the flaw impacts Linux versions 6.1 through 6.4. There is no evidence that the shortcoming has been exploited in the wild to date.
"As StackRot is a Linux kernel vulnerability found in the memory
Multiple SQL injection vulnerabilities have been disclosed in Gentoo Soko that could lead to remote code execution (RCE) on vulnerable systems.
"These SQL injections happened despite the use of an Object-Relational Mapping (ORM) library and prepared statements," SonarSource researcher Thomas Chauchefoin said, adding they could result in RCE on Soko because of a "misconfiguration of the database.
Internet-facing Linux systems and Internet of Things (IoT) devices are being targeted as part of a new campaign designed to illicitly mine cryptocurrency.
"The threat actors behind the attack use a backdoor that deploys a wide array of tools and components such as rootkits and an IRC bot to steal device resources for mining operations," Microsoft threat intelligence researcher Rotem Sde-Or said.
The Chinese state-sponsored group known as UNC3886 has been found to exploit a zero-day flaw in VMware ESXi hosts to backdoor Windows and Linux systems.
The VMware Tools authentication bypass vulnerability, tracked as CVE-2023-20867 (CVSS score: 3.9), "enabled the execution of privileged commands across Windows, Linux, and PhotonOS (vCenter) guest VMs without authentication of guest credentials
An analysis of the Linux variant of a new ransomware strain called BlackSuit has covered significant similarities with another ransomware family called Royal.
Trend Micro, which examined an x64 VMware ESXi version targeting Linux machines, said it identified an "extremely high degree of similarity" between Royal and BlackSuit.
"In fact, they're nearly identical, with 98% similarities in
The threat actors behind BlackCat ransomware have come up with an improved variant that prioritizes speed and stealth in an attempt to bypass security guardrails and achieve their goals.
The new version, dubbed Sphynx and announced in February 2023, packs a "number of updated capabilities that strengthen the group's efforts to evade detection," IBM Security X-Force said in a new analysis.
The "
Linux routers in Japan are the target of a new Golang remote access trojan (RAT) 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 (JPCERT/CC) said in a report published today.
The compromise of an internet-exposed router is followed by the
A new ransomware-as-service (RaaS) operation called MichaelKors has become the latest file-encrypting malware to target Linux and VMware ESXi systems as of April 2023.
The development points to cybercriminal actors increasingly setting their eyes on the ESXi, cybersecurity firm CrowdStrike said in a report shared with The Hacker News.
"This trend is especially noteworthy given the fact that ESXi
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 retains its reputation as an extremely stealthy and difficult-to-detect malware with this latest iteration," security researchers Shaul Vilkomir-Preisman and Eliran Nissan said.
BPFDoor (
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. "It uses a combination of ECDH on
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.
That's according to findings from Palo Alto Networks Unit 42, which discovered recent malicious cyber activity carried out by the group targeting South Africa and Nepal.
Alloy Taurus is the constellation-themed moniker assigned to a
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 findings are crucial, not least because it marks the first publicly documented example of the
The Pakistan-based advanced persistent threat (APT) actor known as Transparent Tribe used a two-factor authentication (2FA) tool used by Indian government agencies as a ruse to deliver a new Linux backdoor called Poseidon.
"Poseidon is a second-stage payload malware associated with Transparent Tribe," Uptycs security researcher Tejaswini Sandapolla said in a technical report published this week.
A Chinese state-sponsored threat activity group tracked as RedGolf has been attributed to the use of a custom Windows and Linux backdoor called KEYPLUG.
"RedGolf is a particularly prolific Chinese state-sponsored threat actor group that has likely been active for many years against a wide range of industries globally," Recorded Future told The Hacker News.
"The group has shown the ability to
An unknown Chinese state-sponsored hacking group has been linked to a novel piece of malware aimed at Linux servers.
French cybersecurity firm ExaTrack, which found three samples of the previously documented malicious software that date back to early 2022, dubbed it Mélofée.
The newest of the three artifacts is designed to drop a kernel-mode rootkit that's based on an open source project
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