Threat Intelligence | Breaking Cybersecurity News | The Hacker News

The Russian nation-state actor tracked as Secret Blizzard has been observed leveraging malware associated with other threat actors to deploy a known backdoor called Kazuar on target devices located in Ukraine. The new findings come from the Microsoft threat intelligence team, which said it observed the adversary leveraging the Amadey bot malware to download custom malware onto "specifically selected" systems associated with the Ukrainian military between March and April 2024. The activity is assessed to be the second time since 2022 that Secret Blizzard, also known as Turla, has latched onto a cybercrime campaign to propagate its own tools in Ukraine. "Commandeering other threat actors' access highlights Secret Blizzard's approach to diversifying its attack vectors," the company said in a report shared with The Hacker News. Some of the other known methods employed by the hacking crew include adversary-in-the-middle ( AitM ) campaigns, strategic web compro...

Cybersecurity researchers have discovered a new version of the ZLoader malware that employs a Domain Name System (DNS) tunnel for command-and-control (C2) communications, indicating that the threat actors are continuing to refine the tool after resurfacing a year ago. "Zloader 2.9.4.0 adds notable improvements including a custom DNS tunnel protocol for C2 communications and an interactive shell that supports more than a dozen commands, which may be valuable for ransomware attacks," Zscaler ThreatLabz said in a Tuesday report. "These modifications provide additional layers of resilience against detection and mitigation." ZLoader , also referred to as Terdot, DELoader, or Silent Night, is a malware loader that's equipped with the ability to deploy next-stage payloads. Malware campaigns distributing the malware were observed for the first time in almost two years in September 2023 after its infrastructure was taken down. In addition to incorporating various...

Vulnerability Management (VM) has long been a cornerstone of organizational cybersecurity. Nearly as old as the discipline of cybersecurity itself, it aims to help organizations identify and address potential security issues before they become serious problems. Yet, in recent years, the limitations of this approach have become increasingly evident.  At its core, Vulnerability Management processes remain essential for identifying and addressing weaknesses. But as time marches on and attack avenues evolve, this approach is beginning to show its age. In a recent report, How to Grow Vulnerability Management into Exposure Management (Gartner, How to Grow Vulnerability Management Into Exposure Management, 8 November 2024, Mitchell Schneider Et Al.), we believe Gartner® addresses this point precisely and demonstrates how organizations can – and must – shift from a vulnerability-centric strategy to a broader Exposure Management (EM) framework. We feel it's more than a worthwhile read an...

The threat actors linked to the Black Basta ransomware have been observed switching up their social engineering tactics , distributing a different set of payloads such as Zbot and DarkGate since early October 2024. "Users within the target environment will be email bombed by the threat actor, which is often achieved by signing up the user's email to numerous mailing lists simultaneously," Rapid7 said . "After the email bomb, the threat actor will reach out to the impacted users." As observed back in August, the attackers make initial contact with prospective targets on Microsoft Teams, pretending to be support personnel or IT staff of the organization. In some instances, they have also been observed impersonating IT staff members within the targeted organization. Users who end up interacting with the threat actors are urged to install legitimate remote access software such as AnyDesk, ScreenConnect, TeamViewer, and Microsoft's Quick Assist. The Window...

A malicious botnet called Socks5Systemz is powering a proxy service called PROXY.AM, according to new findings from Bitsight. "Proxy malware and services enable other types of criminal activity adding uncontrolled layers of anonymity to the threat actors, so they can perform all kinds of malicious activity using chains of victim systems," the company's security research team said in an analysis published last week. The disclosure comes merely weeks after the Black Lotus Labs team at Lumen Technologies revealed that systems compromised by another malware known as Ngioweb are being abused as residential proxy servers for NSOCKS. Socks5Systemz, originally advertised in the cybercrime underground as far back as March 2013, was previously documented by BitSight as being deployed as part of cyber attacks targeting distributing PrivateLoader, SmokeLoader, and Amadey. The primary objective of the malware is to turn compromised systems into proxy exit nodes, which are t...

The threat actor known as Gamaredon has been observed leveraging Cloudflare Tunnels as a tactic to conceal its staging infrastructure hosting a malware called GammaDrop. The activity is part of an ongoing spear-phishing campaign targeting Ukrainian entities since at least early 2024 that's designed to drop the Visual Basic Script malware, Recorded Future's Insikt Group said in a new analysis. The cybersecurity company is tracking the threat actor under the name BlueAlpha, which is also known as Aqua Blizzard, Armageddon, Hive0051, Iron Tilden, Primitive Bear, Shuckworm, Trident Ursa, UAC-0010, UNC530, and Winterflounder. The group, believed to be active since 2014, is affiliated with Russia's Federal Security Service (FSB). "BlueAlpha has recently started using Cloudflare Tunnels to conceal staging infrastructure used by GammaDrop , an increasingly popular technique used by cybercriminal threat groups to deploy malware," Insikt Group noted . "BlueAl...

A suspected Chinese threat actor targeted a large U.S. organization earlier this year as part of a four-month-long intrusion. According to Broadcom-owned Symantec, the first evidence of the malicious activity was detected on April 11, 2024 and continued until August. However, the company doesn't rule out the possibility that the intrusion may have occurred earlier. "The attackers moved laterally across the organization's network, compromising multiple computers," the Symantec Threat Hunter Team said in a report shared with The Hacker News. "Some of the machines targeted were Exchange Servers, suggesting the attackers were gathering intelligence by harvesting emails. Exfiltration tools were also deployed, suggesting that targeted data was taken from the organizations." The name of the organization that was impacted by the persistent attack campaign was not disclosed, but noted that the victim has a significant presence in China. The links to China as ...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added multiple security flaws affecting products from Zyxel, North Grid Proself, ProjectSend , and CyberPanel to its Known Exploited Vulnerabilities ( KEV ) catalog, citing evidence of active exploitation in the wild. The list of vulnerabilities is as follows - CVE-2024-51378 (CVSS score: 10.0) - An incorrect default permissions vulnerability that allows for authentication bypass and the execution of arbitrary commands using shell metacharacters in the statusfile property CVE-2023-45727 (CVSS score: 7.5) - An improper restriction of XML External Entity (XXE) reference vulnerability that could allow a remote, unauthenticated attacker to conduct an XXE attack CVE-2024-11680 (CVSS score: 9.8) - An improper authentication vulnerability that allows a remote, unauthenticated attacker to create accounts, upload web shells, and embed malicious JavaScript CVE-2024-11667 (CVSS score: 7.5) - A path traversal vulnerabilit...

The North Korea-aligned threat actor known as Kimsuky has been linked to a series of phishing attacks that involve sending email messages that originate from Russian sender addresses to ultimately conduct credential theft. "Phishing emails were sent mainly through email services in Japan and Korea until early September," South Korean cybersecurity company Genians said . "Then, from mid-September, some phishing emails disguised as if they were sent from Russia were observed." This entails the abuse of VK's Mail.ru email service, which supports five different alias domains, including mail.ru, internet.ru, bk.ru, inbox.ru, and list.ru. Genians said it has observed the Kimsuky actors leveraging all the aforementioned sender domains for phishing campaigns that masquerade as financial institutions and internet portals like Naver. Other phishing attacks have entailed sending messages that mimic Naver's MYBOX cloud storage service and aim to trick users into ...

Cybersecurity researchers are warning about malicious email campaigns leveraging a phishing-as-a-service ( PhaaS ) toolkit called Rockstar 2FA with an aim to steal Microsoft 365 account credentials. "This campaign employs an AitM [adversary-in-the-middle] attack, allowing attackers to intercept user credentials and session cookies, which means that even users with multi-factor authentication (MFA) enabled can still be vulnerable," Trustwave researchers Diana Solomon and John Kevin Adriano said . Rockstar 2FA is assessed to be an updated version of the DadSec (aka Phoenix) phishing kit. Microsoft is tracking the developers and distributors of the Dadsec PhaaS platform under the moniker Storm-1575 . Like its predecessors, the phishing kit is advertised via services like ICQ, Telegram, and Mail.ru under a subscription model for $200 for two weeks (or $350 for a month), allowing cyber criminals with little-to-no technical expertise to mount campaigns at scale. Some of the...

Cybersecurity researchers have shed light on what has been described as the first Unified Extensible Firmware Interface (UEFI) bootkit designed for Linux systems. Dubbed Bootkitty by its creators who go by the name BlackCat, the bootkit is assessed to be a proof-of-concept (PoC) and there is no evidence that it has been put to use in real-world attacks. Also tracked as IranuKit , it was uploaded to the VirusTotal platform on November 5, 2024. "The bootkit's main goal is to disable the kernel's signature verification feature and to preload two as yet unknown ELF binaries via the Linux init process (which is the first process executed by the Linux kernel during system startup)," ESET researchers Martin Smolár and Peter Strýček said . The development is significant as it heralds a shift in the cyber threat landscape where UEFI bootkits are no longer confined to Windows systems alone . It's worth noting that Bootkitty is signed by a self-signed certificate, a...

Multi-stage cyber attacks, characterized by their complex execution chains, are designed to avoid detection and trick victims into a false sense of security. Knowing how they operate is the first step to building a solid defense strategy against them. Let's examine real-world examples of some of the most common multi-stage attack scenarios that are active right now. URLs and Other Embedded Content in Documents Attackers frequently hide malicious links within seemingly legitimate documents, such as PDFs or Word files. Upon opening the document and clicking the embedded link, users are directed to a malicious website. These sites often employ deceptive tactics to get the victim to download malware onto their computer or share their passwords. Another popular type of embedded content is QR codes. Attackers conceal malicious URLs within QR codes and insert them into documents. This strategy forces users to turn to their mobile devices to scan the code, which then directs them to ph...

When CVEs go viral, separating critical vulnerabilities from the noise is essential to protecting your organization. That's why Intruder, a leader in attack surface management, built Intel - a free vulnerability intelligence platform designed to help you act fast and prioritize real threats. What is Intel? Intel was created to fill a gap in the resources available for tracking emerging vulnerabilities. When one of Intruder's go-to tools shut down last year, the team set out to build a solution that would not only meet their needs but also benefit the wider infosec community. Intel tracks the top trending CVEs from the past 24 hours and assigns each a 'hype score' - a rating out of 100, benchmarked against the year's highest levels. Alongside real-time insights, Intel features expert commentary from Intruder's Security team and consolidates the latest information from trusted sources like NVD and CISA, all in one place. 5 Ways Intel Helps You Stay Ahead Keep on top of trends: I...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added a now-patched critical security flaw impacting Array Networks AG and vxAG secure access gateways to its Known Exploited Vulnerabilities ( KEV ) catalog following reports of active exploitation in the wild. The vulnerability, tracked as CVE-2023-28461 (CVSS score: 9.8), concerns a case of missing authentication that could be exploited to achieve arbitrary code execution remotely. Fixes (version 9.4.0.484) for the security shortcoming were released by the network hardware vendor in March 2023.  "Array AG/vxAG remote code execution vulnerability is a web security vulnerability that allows an attacker to browse the filesystem or execute remote code on the SSL VPN gateway using flags attribute in HTTP header without authentication," Array Networks said. "The product can be exploited through a vulnerable URL." The inclusion to KEV catalog comes shortly after cybersecurity company Trend...

Dive into the evolution of phishing and malware evasion techniques and understand how attackers are using increasingly sophisticated methods to bypass security measures. The Evolution of Phishing Attacks "I really like the saying that 'This is out of scope' said no hacker ever. Whether it's tricks, techniques or technologies, hackers will do anything to evade detection and make sure their attack is successful," says Etay Maor, Chief Security Strategist at Cato Networks and member of Cato CTRL . Phishing attacks have transformed significantly over the years. 15-20 years ago, simple phishing sites were sufficient for capturing the crown jewels of the time - credit card details. Today, attacks and defense methods have become much more sophisticated, as we'll detail below. "This is also the time where the "cat-and-mouse" attack-defense game began," says Tal Darsan, Security Manager and member of Cato CTRL. At the time, a major defense technique against credit card phishing sites inv...