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The Computer Emergency Response Team of Ukraine (CERT-UA) has revealed that threat actors "interfered" with at least 11 telecommunication service providers in the country between May and September 2023. The agency is tracking the activity under the name UAC-0165, stating the intrusions led to service interruptions for customers. The starting point of the attacks is a reconnaissance phase in which a telecom company's network is scanned to identify exposed RDP or SSH interfaces and potential entry points. "It should be noted that reconnaissance and exploitation activities are carried out from previously compromised servers located, in particular, in the Ukrainian segment of the internet," CERT-UA  said . "To route traffic through such nodes, Dante, SOCKS5, and other proxy servers are used." The attacks are notable for the use of two specialized programs called POEMGATE and POSEIDON that enable credential theft and remote control of the infected ho

The AvosLocker ransomware gang has been linked to attacks against critical infrastructure sectors in the U.S., with some of them detected as recently as May 2023. That's according to a new joint cybersecurity advisory released by the U.S. Cybersecurity and Infrastructure Security Agency (CISA) and the Federal Bureau of Investigation (FBI) detailing the ransomware-as-a-service (RaaS) operation's tactics, techniques, and procedures (TTPs). "AvosLocker affiliates compromise organizations' networks by using legitimate software and open-source remote system administration tools," the agencies  said . "AvosLocker affiliates then use exfiltration-based data extortion tactics with threats of leaking and/or publishing stolen data." The ransomware strain  first emerged  on the scene in mid-2021, and has since leveraged sophisticated techniques to disable antivirus protection as a detection evasion measure. It affects Windows, Linux, and VMware ESXi environment

High-profile government and telecom entities in Asia have been targeted as part of an ongoing campaign since 2021 that's designed to deploy basic backdoors and loaders for delivering next-stage malware. Cybersecurity company Check Point is tracking the activity under the name  Stayin' Alive . Targets include organizations located in Vietnam, Uzbekistan, Pakistan, and Kazakhstan. "The simplistic nature of the tools [...] and their wide variation suggests they are disposable, mostly utilized to download and run additional payloads," it  said  in a report published Wednesday. "These tools share no clear code overlaps with products created by any known actors and do not have much in common with each other." What's notable about the campaign is that the infrastructure  shares overlaps  with that used by  ToddyCat , a China-linked threat actor known for orchestrating cyber assaults against government and military agencies in Europe and Asia since at least

A previously undocumented threat actor of unknown provenance has been linked to a number of attacks targeting organizations in the manufacturing, IT, and biomedical sectors in Taiwan. The Symantec Threat Hunter Team, part of Broadcom, attributed the attacks to an advanced persistent threat (APT) it tracks under the name  Grayling . Evidence shows that the campaign began in February 2023 and continued until at least May 2023. Also likely targeted as part of the activity is a government agency located in the Pacific Islands, as well as entities in Vietnam and the U.S. "This activity stood out due to the use by Grayling of a distinctive DLL side-loading technique that uses a custom decryptor to deploy payloads," the company  said  in a report shared with The Hacker News. "The motivation driving this activity appears to be intelligence gathering." The initial foothold to victim environments is said to have been achieved by exploiting public-facing infrastructure,

A Gaza-based threat actor has been linked to a series of cyber attacks aimed at Israeli private-sector energy, defense, and telecommunications organizations. Microsoft, which revealed details of the activity in its fourth annual  Digital Defense Report , is tracking the campaign under the name  Storm-1133 . "We assess this group works to further the interests of Hamas, a Sunni militant group that is the de facto governing authority in the Gaza Strip, as activity attributed to it has largely affected organizations perceived as hostile to Hamas," the company said. Targets of the campaign included organizations in the Israeli energy and defense sectors and entities loyal to Fatah, a Palestinian nationalist and social democratic political party headquartered in the West Bank region. Attack chains entail a mix of social engineering and fake profiles on LinkedIn that masquerade as Israeli human resources managers, project coordinators, and software developers to contact and s

A governmental entity in Guyana has been targeted as part of a cyber espionage campaign dubbed  Operation Jacana . The  activity , which was detected by ESET in February 2023, entailed a spear-phishing attack that led to the deployment of a hitherto undocumented implant written in C++ called DinodasRAT. The Slovak cybersecurity firm said it could link the intrusion to a known threat actor or group, but attributed with medium confidence to a China-nexus adversary owing to the use of  PlugX  (aka Korplug), a remote access trojan common to Chinese hacking crews. "This campaign was targeted, as the threat actors crafted their emails specifically to entice their chosen victim organization," ESET  said  in a report shared with The Hacker News. "After successfully compromising an initial but limited set of machines with DinodasRAT, the operators proceeded to move inside and breach the target's internal network, where they again deployed this backdoor." The infec

LUCR-3 overlaps with groups such as Scattered Spider, Oktapus, UNC3944, and STORM-0875 and is a financially motivated attacker that leverages the Identity Provider (IDP) as initial access into an environment with the goal of stealing Intellectual Property (IP) for extortion. LUCR-3 targets Fortune 2000 companies across various sectors, including but not limited to Software, Retail, Hospitality, Manufacturing, and Telecoms. LUCR-3 does not rely heavily on malware or even scripts; instead, LUCR-3 expertly uses victims' own tools, applications, and resources to achieve their goals. At a high level, Initial Access is gained through compromising existing identities in the IDP (Okta: Identity Cloud, Azure AD / Entra, Ping Identity: PingOne). LUCR-3 uses SaaS applications such as document portals, ticketing systems, and chat applications to learn how the victim organization operates and how to access sensitive information. Using the data they gained from reconnaissance within the SaaS

The U.S. Federal Bureau of Investigation (FBI) is warning of a new trend of dual ransomware attacks targeting the same victims, at least since July 2023. "During these attacks, cyber threat actors deployed two different ransomware variants against victim companies from the following variants: AvosLocker, Diamond, Hive, Karakurt, LockBit, Quantum, and Royal," the FBI  said  in an alert. "Variants were deployed in various combinations." Not much is known about the scale of such attacks, although it's believed that they happen in close proximity to one another, ranging from anywhere between 48 hours to within 10 days. Another notable change observed in ransomware attacks is the increased use of custom data theft, wiper tools, and malware to exert pressure on victims to pay up. "This use of dual ransomware variants resulted in a combination of data encryption, exfiltration, and financial losses from ransom payments," the agency said. "Second ran

A previously undocumented threat actor dubbed  Sandman  has been attributed to a set of cyber attacks targeting telecommunic koation providers in the Middle East, Western Europe, and the South Asian subcontinent. Notably, the intrusions leverage a just-in-time (JIT) compiler for the Lua programming language known as LuaJIT as a vehicle to deploy a novel implant called LuaDream . "The activities we observed are characterized by strategic lateral movement to specific targeted workstations and minimal engagement, suggesting a deliberate approach aimed at achieving the set objectives while minimizing the risk of detection," SentinelOne security researcher Aleksandar Milenkoski  said  in an analysis published in collaboration with QGroup. "The implementation of LuaDream indicates a well-executed, maintained, and actively developed project of a considerable scale." Neither the campaign nor its tactics have been correlated with any known threat actor or group, althoug

The  Internet of Things (IoT)  is transforming efficiency in various sectors like healthcare and logistics but has also introduced new security risks, particularly IoT-driven DDoS attacks. This article explores how these attacks work, why they're uniquely problematic, and how to mitigate them. What Is IoT? IoT (Internet of Things) refers to online, interconnected devices that collect and exchange data. This broad category of devices includes sensors, cameras, network routers, and advanced machinery, and their integration into everyday life and work processes results in an ecosystem that can automate operations, improve decision-making, and enhance user experience. IoT: A Breeding Ground for Botnets IoT's rapid adoption amplifies its vulnerability, as poorly secured devices become easy prey for attackers and may become part of a botnet. Controlled by attackers, botnets can scale and rapidly execute various attacks, including DDoS, data theft, ad fraud, cryptocurrency mining, spam a

The threat actors behind RedLine and Vidar information stealers have been observed pivoting to ransomware through phishing campaigns that spread initial payloads signed with Extended Validation ( EV ) code signing certificates. "This suggests that the threat actors are streamlining operations by making their techniques multipurpose," Trend Micro researchers  said  in a new analysis published this week. In the incident investigated by the cybersecurity company, an unnamed victim is said to have first received a piece of info stealer malware with EV code signing certificates, followed by ransomware using the same delivery technique. In the past,  QakBot infections  have leveraged  samples signed with valid code signing certificates  to bypass security protections. The attacks start with phishing emails that employ well-worn lures to trick victims into running malicious attachments that masquerade as PDF or JPG images but are actually executables that jump-start the comprom

A new malware loader called HijackLoader is gaining traction among the cybercriminal community to deliver various payloads such as  DanaBot ,  SystemBC , and  RedLine Stealer . "Even though HijackLoader does not contain advanced features, it is capable of using a variety of modules for code injection and execution since it uses a modular architecture, a feature that most loaders do not have," Zscaler ThreatLabz researcher Nikolaos Pantazopoulos  said . First observed by the company in July 2023, the malware employs a number of techniques to fly under the radar. This involves using syscalls to evade monitoring from security solutions, monitoring processes associated with security software based on an embedded blocklist, and putting off code execution by as much as 40 seconds at different stages. The exact initial access vector used to infiltrate targets is currently not known. The anti-analysis aspects notwithstanding, the loader packs in a main instrumentation module that

The Iranian threat actor tracked as APT34 has been linked to a new phishing attack that leads to the deployment of a variant of a backdoor called  SideTwist . "APT34 has a high level of attack technology, can design different intrusion methods for different types of targets, and has supply chain attack capability," NSFOCUS Security Labs  said  in a report published last week. APT34, also known by the names Cobalt Gypsy, Hazel Sandstorm (formerly Europium), Helix Kitten, and OilRig, has a  track record  of targeting telecommunications, government, defense, oil and financial services verticals in the Middle East since at least 2014 via spear-phishing lures that culminate in the deployment of various backdoors. One of the key traits of the hacking outfit is its ability to create new and updated tools to minimize the odds of detection and gain a foothold on compromised hosts for extended periods of time. SideTwist was  first documented  as used by APT34 in April 2021, with Check Poin