This analysis examines Advanced Persistent Threat (APT) attacks targeting South Korea in June 2025. Spear phishing emerged as the primary attack vector, with LNK files being the most prevalent method, followed by an increase in HWP file-based attacks. The report details two types of spear phishing attacks: Type A, which uses CAB files containing malicious scripts for information exfiltration and additional malware downloads, and Type B, which deploys RAT malware like XenoRAT and RoKRAT using cloud storage APIs. Both types often include decoy documents to appear legitimate. The attacks targeted various sectors, using carefully crafted emails and malicious attachments to exploit victims.
The June 2025 threat analysis reveals an increase in new ransomware samples compared to May. The data is based on detection names from AhnLab and information collected from Dedicated Leak Sites (DLS) of ransomware groups. Statistics cover the past six months, showing the total number of ransomware samples collected. The analysis includes a breakdown of companies affected by ransomware attacks, as posted on DLS. While some data collection may be incomplete or delayed for certain ransomware groups, the report provides insights into the current ransomware landscape. A list of affected companies publicly disclosed by various ransomware groups is also included, along with MD5 hashes of notable samples.
This analysis provides insights into Infostealer malware trends observed in June 2025. The data, collected through various automated systems, reveals changes in distribution methods and malware types. While LummaC2 has been dominant, June saw increased activity from Rhadamanthys, ACRStealer, Vidar, and StealC. A new variant of ACRStealer emerged, using advanced techniques like HTTP host domain spoofing and anti-analysis methods. Distribution via crack disguises decreased, with 94.4% in EXE format and 5.6% using DLL-SideLoading. A unique malware type was observed, creating an uncontrollable window prompting browser updates. Some samples now hide compression passwords in image files, indicating evolving evasion tactics.
A new Ransomware-as-a-Service (RaaS) group called GLOBAL GROUP has emerged, likely a rebranding of the BlackLock RaaS operation. The group targets various sectors across the US and Europe, with a focus on healthcare providers. GLOBAL GROUP utilizes Initial Access Brokers to gain entry to vulnerable edge appliances and employs brute-force tools for Microsoft Outlook and RDWeb portals. Their ransom negotiation panel features AI-driven chatbots, enabling non-English-speaking affiliates to engage victims more effectively. The group offers an 85% revenue share to affiliates and provides a mobile-friendly control panel. GLOBAL GROUP's infrastructure has been traced to a Russia-based VPS provider, and their operations show similarities to previous Mamona ransomware activities.
UNG0002, an espionage-focused threat group, has been conducting campaigns across Asian jurisdictions including China, Hong Kong, and Pakistan. The group employs sophisticated multi-stage attacks using LNK files, VBScript, and custom RAT implants. Their operations span two major campaigns: Operation Cobalt Whisper and Operation AmberMist, targeting various sectors such as defense, aviation, gaming, and academia. UNG0002 utilizes social engineering techniques like ClickFix and abuses DLL sideloading to evade detection. The group demonstrates high adaptability, evolving from using Cobalt Strike to developing custom implants like Shadow RAT and INET RAT. Attribution challenges persist, but the group is assessed to originate from South-East Asia with a focus on espionage activities.
Critical Golden dMSA Attack in Windows Server 2025 Enables Cross-Domain Attacks and Persistent Access
Source: https://thehackernews.com/2025/07/critical-golden-dmsa-attack-in-windows.html
Salt Typhoon breach: Chinese APT compromises U.S. Army National Guard network
Source: https://securityaffairs.com/180018/intelligence/salt-typhoon-breach-chinese-apt-compromises-u-s-army-national-guard-network.html
Newly Emerged GLOBAL GROUP RaaS Expands Operations with AI-Driven Negotiation Tools
Source: https://thehackernews.com/2025/07/newly-emerged-global-group-raas-expands.html
A sophisticated piece of malware was discovered embedded in a WordPress site's core files, specifically in wp-settings.php. The malware uses a ZIP archive to hide malicious code and perform search engine poisoning and unauthorized content injection. It employs dynamic Command and Control server selection, anti-bot mechanisms, and manipulates SEO-related files. The malware's main goals include manipulating search engine rankings, injecting spam content, and performing unauthorized redirects. It uses obfuscation techniques and ZIP archives for code inclusion, making it challenging to detect and remove. Prevention measures include keeping software updated, using reputable sources for themes and plugins, implementing strong credential security, utilizing a Web Application Firewall, and regularly scanning for malware.
The article examines a malware variant associated with the SLOW#TEMPEST campaign, focusing on advanced obfuscation techniques used by the threat actors. The malware is distributed as an ISO file containing multiple files, including two malicious ones. The loader DLL, zlibwapi.dll, decrypts and executes the embedded payload, which is appended to another DLL. The analysis reveals sophisticated anti-analysis techniques, including Control Flow Graph (CFG) obfuscation using dynamic jumps and obfuscated function calls. The researchers demonstrate methods to counter these techniques using emulation and code patching. The loader DLL also employs an anti-sandbox check, only executing its payload if the target machine has at least 6 GB of RAM. The study highlights the importance of combining advanced dynamic analysis with static analysis to effectively understand and mitigate modern malware threats.
An analysis reveals a recent attack vector targeting WordPress themes, specifically injecting malicious code into the footer.php file. The injected code uses a function called r2048 to retrieve a URL from a remote server and redirect visitors. This method is particularly insidious as it's not visible from the WordPress dashboard. The attackers utilize either cURL or file_get_contents to fetch the redirection URL, allowing for dynamic control over the destination based on factors like the user's browser or device. This technique underscores the importance of regular theme and plugin audits, as well as securing FTP and SSH access to prevent unauthorized file modifications.
The report discusses the evolving landscape of vulnerability reporting and management, highlighting concerns about the long-term stability of the CVE system. It notes the emergence of competing projects and the potential fragmentation of vulnerability data sources. The first half of 2025 has seen an increase in CVE publications and Known Exploited Vulnerabilities (KEVs), with a growing proportion affecting network-related equipment. The report emphasizes the importance of continuous tracking and patching of vulnerabilities. It also covers Microsoft's July 2025 security update, addressing 132 vulnerabilities, including critical remote code execution issues. The report stresses the need for prompt application of patches to mitigate potential risks.
Atomic macOS Stealer (AMOS) has received a major update, now including an embedded backdoor for persistent access to victims' Macs. This upgrade allows attackers to maintain control, run remote tasks, and potentially gain full system compromise. The Russia-affiliated AMOS threat group has expanded its capabilities, mimicking North Korean attack strategies. The malware is distributed through fake software websites and spear-phishing campaigns. It uses a trojanized DMG file to bypass Gatekeeper, installs persistence via LaunchDaemon, and communicates with command-and-control servers. The backdoor functionality significantly increases the risk to victims, turning one-time breaches into long-term compromises. AMOS campaigns have already affected over 120 countries, with the potential to access thousands of Mac devices worldwide.
Pay2Key, an Iranian-backed ransomware-as-a-service operation, has re-emerged as Pay2Key.I2P, targeting Western organizations. Linked to the Fox Kitten APT group and collaborating with Mimic ransomware, the campaign has collected over $4 million in ransom payments in four months. The group offers an 80% profit share to affiliates supporting Iran or attacking its enemies, blending financial motivations with geopolitical objectives. Pay2Key.I2P employs sophisticated evasion techniques, including anti-analysis checks and obfuscation methods. The operation's strategic marketing on darknet forums and social media platforms indicates a planned rollout, with the addition of Linux-targeted ransomware expanding their attack surface.
A coordinated campaign of 18 malicious browser extensions infected 2.3 million users across Chrome and Edge. These extensions, including a color picker tool, appeared legitimate with verified badges and high install counts. The RedDirection campaign implemented sophisticated browser hijacking mechanisms, capturing users' browsing data and potentially redirecting them to malicious sites. The malware was introduced through version updates of previously clean extensions, exploiting the auto-update feature of browsers. The campaign demonstrates systemic failures in marketplace security, verification processes, and trust signals, turning productivity tools into surveillance malware. Users are advised to remove affected extensions and monitor their accounts for suspicious activity.
A new variant of macOS.ZuRu malware has been discovered, targeting users through a trojanized version of the Termius app. This backdoor, initially noted in 2021, now uses a modified Khepri C2 framework for post-infection operations. The malware is delivered via a .dmg disk image containing a hacked version of Termius.app. It adds two executables to the embedded Termius Helper.app and uses a new method to trojanize legitimate applications. The malware installs persistence via a LaunchDaemon and includes an md5 updater mechanism. The payload obtained from the C2 is a modified Khepri beacon with capabilities for file transfer, system reconnaissance, and command execution. The threat actor continues to target developers and IT professionals, adapting their techniques to evade detection.
A VS Code extension for Ethereum smart contract development, ETHcode, was compromised through a GitHub pull request. The attacker, using a newly created account, submitted a PR that introduced a malicious dependency and code to execute it. The compromise was subtle, involving only two lines of code changes among thousands. The malicious code downloads and runs a batch script from a public file-hosting service, potentially to steal crypto assets or compromise Ethereum contracts. The extension, with nearly 6,000 installs, was removed from the marketplace after discovery. This incident highlights the importance of carefully reviewing contributions, especially from new accounts, and scrutinizing package dependencies in software development workflows.
US Announces Arresting State-Sponsored Chinese Hacker Linked to HAFNIUM (Silk Typhoon) Group
Source: https://hackread.com/us-arresting-chinese-hacker-linked-to-hafnium-group/
