The FBI has issued a warning about scams involving fake videos used to deceive victims, typically as part of phishing campaigns. These scams leverage manipulated or fabricated video content to trick users into divulging sensitive information or performing actions that compromise security. While no specific software vulnerabilities are exploited, the threat relies on social engineering and the increasing sophistication of video forgery techniques. The threat is classified as medium severity due to its potential to impact confidentiality and integrity through deception, though it does not directly affect system availability. European organizations are at risk, especially those with high exposure to phishing attacks and those in sectors targeted by fraudsters. Mitigation requires enhanced user awareness training focused on recognizing fake video content, deployment of advanced email and web filtering solutions, and verification protocols for video-based communications. Countries with large digital economies and high internet penetration, such as Germany, France, the UK, and the Netherlands, are more likely to be targeted. Given the ease of exploitation and potential for significant data compromise, the suggested severity is medium. Defenders should prioritize user education and implement multi-factor verification for sensitive transactions involving video communications.
Highlights: Introduction Throughout 2025, we conducted and published several reports related to our research on the Silver Fox APT. In some of them (for example, here), the threat actor delivered the well-known ValleyRAT backdoor, also referred to as Winos or Winos4.0, as the final stage. Since this malware family is widely used, modular, and often associated with Chinese threat actors […] The post Cracking ValleyRAT: From Builder Secrets to Kernel Rootkits appeared first on Check Point Research .
The U. S. Cybersecurity and Infrastructure Security Agency (CISA) has added newly discovered vulnerabilities affecting Microsoft Windows and WinRAR to its Known Exploited Vulnerabilities catalog. These flaws have been identified as actively exploited or highly likely to be exploited, prompting increased attention from security professionals. Although specific technical details and affected versions are not provided, the inclusion in CISA's catalog indicates a significant risk to systems running these widely used software products. The vulnerabilities are currently rated as medium severity, with no confirmed exploits in the wild reported yet. European organizations using Microsoft Windows and WinRAR should be vigilant, as these products are ubiquitous across enterprises and consumers. The threat could impact confidentiality, integrity, and availability if exploited, especially in environments where these applications are critical. Mitigation requires timely patching once updates are available, enhanced monitoring for suspicious activity, and restricting WinRAR usage or applying configuration hardening. Countries with high adoption of Microsoft Windows and WinRAR, such as Germany, France, the UK, and the Netherlands, are likely to be most affected.
UDPGangster, a UDP-based backdoor associated with the MuddyWater threat group, has been observed targeting users in Turkey, Israel, and Azerbaijan. The malware is delivered through malicious Microsoft Word documents with embedded VBA macros, employing sophisticated anti-analysis techniques to evade detection. The campaigns use phishing emails impersonating government entities and include decoy images to distract victims. UDPGangster installs persistence, collects system information, and communicates with its command and control server using UDP. The malware supports various commands for remote execution, file extraction, and payload deployment. Analysis reveals connections to previous MuddyWater operations and shared infrastructure with other known malware.
The DeadLock ransomware campaign employs a new Bring Your Own Vulnerable Driver (BYOVD) loader exploiting CVE-2024-51324, a vulnerability in Baidu Antivirus driver, to evade endpoint detection and response (EDR) tools. Attackers use PowerShell scripts to bypass User Account Control (UAC), disable Windows Defender, terminate security services, and delete volume shadow copies, facilitating ransomware deployment. DeadLock ransomware targets Windows systems with a custom stream cipher encryption using time-based cryptographic keys, employing advanced techniques such as recursive directory traversal, memory-mapped file I/O, and multi-threaded processing. Initial access is gained through compromised accounts, followed by system registry modifications, remote access establishment, reconnaissance, lateral movement, and defense impairment. Although no known exploits are currently in the wild, the sophisticated use of BYOVD and defense evasion techniques poses a significant threat to organizations. The attack complexity and multi-stage process highlight the need for targeted mitigation strategies. This threat is particularly relevant to European organizations using Baidu Antivirus or similar vulnerable drivers and those with Windows-based infrastructure. The suggested severity is high due to the potential for widespread impact, ease of defense evasion, and the ransomware’s destructive capabilities.
Doctor Web experts have discovered a unique malware called Trojan.ChimeraWire targeting Windows computers. This trojan simulates user actions to artificially boost website rankings in search engine results. It uses the Google Chrome browser in debug mode and employs various techniques to avoid detection. The malware is distributed through multiple infection chains involving different downloaders and exploits. ChimeraWire's functionality includes automated CAPTCHA solving and simulating user clicks on websites. While currently focused on simple clicker tasks, the trojan's underlying tools have potential for more advanced malicious activities, such as form filling, web scraping, and cyber espionage. The researchers expect future versions of ChimeraWire to implement these additional features.
Storm-0249, a seasoned initial access broker, has evolved from mass phishing to sophisticated post-exploitation tactics. The group now abuses legitimate Endpoint Detection and Response processes, particularly SentinelOne's SentinelAgentWorker.exe, through DLL sideloading. This allows them to conceal malicious activity as routine operations, bypass defenses, and maintain persistence. Their new tactics include Microsoft domain spoofing, curl-to-PowerShell piping, and fileless execution. Storm-0249's ability to weaponize trusted processes and conduct stealthy reconnaissance poses significant challenges for security teams. The group's evolution represents a broader trend in the ransomware-as-a-service ecosystem, lowering the technical barrier for attackers and accelerating the spread of ransomware across sectors.
Britain and its allies face escalating “hybrid threats … designed to weaken critical national infrastructure, undermine our interests and interfere in our democracies.” The post UK Sanctions Russian and Chinese Firms Suspected of Being ‘Malign Actors’ in Information Warfare appeared first on SecurityWeek .
The Spiderman Phishing Kit is a newly identified phishing toolkit targeting European banks, designed to steal user credentials in real-time. It enables attackers to capture login details as victims interact with fake banking websites. The kit is reported via Reddit and linked from a cybersecurity news source, indicating emerging threat activity but with minimal current discussion or exploitation evidence. This phishing campaign focuses on European financial institutions, potentially impacting customer data confidentiality and banking operations. The attack requires user interaction, typically through deceptive emails or messages leading to fraudulent sites. No known exploits or patches exist yet, and the threat is assessed as medium severity due to its targeted nature and real-time credential theft capability. European organizations, especially banks and their customers, should be vigilant and implement specific anti-phishing controls. Countries with significant banking sectors and high internet banking adoption are more likely to be targeted. Immediate mitigation includes enhanced email filtering, user awareness training, and multi-factor authentication enforcement. Given the lack of CVSS score, the threat is assessed as medium severity considering the impact on confidentiality and the need for user interaction for exploitation.
Fortinet has disclosed critical authentication bypass vulnerabilities affecting FortiCloud's Single Sign-On (SSO) login mechanism. These flaws allow attackers to circumvent authentication controls, potentially gaining unauthorized access to FortiCloud management interfaces without valid credentials. Although no known exploits are currently observed in the wild, the critical severity rating underscores the urgency for organizations to address these issues promptly. The vulnerabilities impact the confidentiality and integrity of cloud-managed Fortinet devices and services, posing significant risks to network security. European organizations relying on FortiCloud for centralized device management and SSO are particularly at risk. Mitigation requires immediate application of vendor patches once available, strict monitoring of FortiCloud access logs, and implementing compensating controls such as multi-factor authentication and network segmentation. Countries with high Fortinet market penetration and critical infrastructure deployments, including Germany, France, the UK, Italy, and the Netherlands, are most likely to be affected. Given the ease of exploitation without authentication and the broad impact on cloud-managed security infrastructure, the suggested severity is critical. Defenders must prioritize patch management and enhance monitoring to prevent potential unauthorized access and lateral movement within networks.
The Broadside botnet is a malware campaign targeting TBK brand DVR devices, raising concerns particularly for maritime logistics sectors that rely on these devices. This botnet infects vulnerable DVRs to conscript them into a larger network of compromised devices, potentially enabling distributed denial-of-service (DDoS) attacks or other malicious activities. Although no known exploits are currently active in the wild, the threat is considered medium severity due to the potential impact on maritime operations and critical infrastructure. The botnet's focus on TBK DVRs, which are commonly used in maritime logistics for surveillance and monitoring, highlights a strategic targeting of supply chain and port security systems. European organizations involved in maritime transport and port operations could face operational disruptions and data confidentiality risks if infected. Mitigation requires targeted actions such as network segmentation of DVR devices, strict access controls, firmware updates where available, and enhanced monitoring for unusual network traffic patterns. Countries with significant maritime trade and port infrastructure, such as the Netherlands, Germany, Belgium, Spain, and Italy, are most likely to be affected. Given the medium severity, the threat demands proactive defense measures but does not currently indicate widespread exploitation or critical system compromise. Defenders should prioritize securing TBK DVR devices and related maritime logistics systems to prevent botnet infiltration and potential service disruptions.
Ransomware IAB is a newly reported malware strain that abuses Endpoint Detection and Response (EDR) solutions to execute its payload stealthily, evading traditional detection mechanisms. By leveraging the trust and elevated privileges of EDR software, the ransomware can bypass security controls and maintain persistence on infected systems. Although no known exploits are currently observed in the wild, the technique represents a sophisticated escalation in ransomware tactics. European organizations relying heavily on EDR solutions for endpoint security may face increased risk due to this stealthy execution method. The threat is assessed as high severity given its potential to compromise confidentiality, integrity, and availability without requiring user interaction. Mitigation requires advanced monitoring of EDR behavior, strict application control policies, and rapid incident response capabilities. Countries with high adoption of EDR technologies and critical infrastructure sectors are most likely to be targeted. Immediate attention to this emerging threat is recommended to prevent impactful ransomware incidents in Europe.
A teenager in Spain was arrested for stealing 64 million personal data records, highlighting a significant data breach incident. The stolen data likely includes sensitive personal information, posing risks of identity theft and fraud. Although no specific technical details about the breach method or affected systems are provided, the scale of the data theft indicates a major compromise. European organizations face increased risks from such large-scale data breaches, especially regarding compliance with GDPR and potential reputational damage. Mitigation requires enhanced data protection measures, continuous monitoring, and incident response readiness. Spain and other European countries with high digital adoption and large data repositories are particularly vulnerable. The severity of this threat is high due to the volume of data compromised and the potential impact on confidentiality and privacy. Defenders should prioritize data security audits, access controls, and employee awareness to prevent similar incidents. No known exploits or patches are mentioned, emphasizing the need for proactive security strategies.
A malicious email campaign exploits workforce anxieties by disguising itself as internal HR announcements about layoffs. The emails contain a RAR archive with a double-extension executable masquerading as a PDF document. Upon execution, the file deploys Remcos RAT, a remote access tool, which establishes persistence, collects system information, and prepares the infected host for remote access. The malware uses NSIS compilation to conceal its intent and creates configuration files and registry entries for victim identification and persistence. The campaign highlights the ongoing exploitation of current organizational trends by threat actors to gain initial access to targeted systems.
The US seeks information on the leader of Emennet Pasargad, Mohammad Bagher Shirinkar, and long-time employee Fatemeh Sedighian Kashi. The post US Posts $10 Million Bounty for Iranian Hackers appeared first on SecurityWeek .
The botnet attempts to steal credentials from infected TBK DVR devices, in addition to abusing them to launch DDoS attacks. The post New ‘Broadside’ Botnet Poses Risk to Shipping Companies appeared first on SecurityWeek .
Ransomware groups have started using the Shanya EXE packer to obfuscate their EDR (Endpoint Detection and Response) evasion tools, complicating detection and mitigation efforts. This technique allows malware to hide components that disable or bypass security software, increasing the likelihood of successful ransomware deployment. The use of such packers enhances the stealth and persistence of ransomware attacks, posing a significant risk to organizations. European entities, especially those with critical infrastructure and high-value data, face increased exposure due to this evolving tactic. Mitigation requires advanced behavioral analysis, updated detection signatures, and strict application control policies. Countries with high ransomware activity and widespread use of targeted software are at greater risk. Given the high impact on confidentiality, integrity, and availability, combined with the ease of exploitation once initial access is gained, this threat is assessed as high severity. Defenders must prioritize monitoring for packed executables and strengthen endpoint defenses accordingly.
Vitas, the largest for-profit hospice chain in the United States, discovered a cybersecurity intrusion in October. The post Over 300,000 Individuals Impacted by Vitas Hospice Data Breach appeared first on SecurityWeek .
Insikt Group has identified four distinct activity clusters associated with GrayBravo's CastleLoader malware, each with unique tactics and victim profiles. This supports the assessment that GrayBravo operates a malware-as-a-service model. One cluster, TAG-160, impersonates logistics firms and uses phishing lures with the ClickFix technique to distribute CastleLoader. Another cluster, TAG-161, impersonates Booking.com and employs similar techniques. The analysis also uncovered potential links to the online persona "Sparja" and the broader cybercriminal ecosystem. GrayBravo demonstrates rapid evolution, technical sophistication, and adaptability in response to public exposure. The report recommends various security measures to defend against these threats.
