Abusing DNS record management controls, the threat actor hides the location of malicious content via Cloudflare. The post Internet Infrastructure TLD .arpa Abused in Phishing Attacks appeared first on SecurityWeek .
A deceptive website impersonating CleanMyMac tricks users into installing SHub Stealer, a sophisticated macOS malware. The malware steals sensitive data, including passwords, browser data, cryptocurrency wallets, and Telegram sessions. It can also modify wallet apps to steal recovery phrases. The attack begins with users pasting a command into Terminal, which downloads and executes a malicious script. The malware performs extensive data collection from various browsers and wallet applications, and installs persistent backdoors in certain crypto wallet apps. SHub Stealer is part of a growing family of AppleScript-based macOS infostealers, demonstrating increasing sophistication in targeting Mac users.
A new backdoor, dubbed A0Backdoor, has been discovered in connection with a campaign using email bombing and IT-support impersonation over Microsoft Teams to gain Quick Assist access. The malware's loader exhibits anti-sandbox evasion techniques, and the campaign's command-and-control has shifted to a covert DNS mail exchange-based channel. This activity is attributed to the threat group Blitz Brigantine, also known as Storm-1811 or STAC5777, and shows similarities to Black Basta-linked social-engineering tactics. The attackers use digitally signed MSI packages, often hosted on Microsoft cloud storage, to deliver their proprietary tooling. The A0Backdoor employs sophisticated techniques such as time-based execution windows, runtime decryption, and DNS tunneling for covert communication. The campaign has been active since August 2025, targeting primarily the finance and health sectors.
An investigation has uncovered malicious Chromium-based browser extensions masquerading as legitimate AI assistant tools to collect Large Language Model (LLM) chat histories and browsing data. These extensions have been installed approximately 900,000 times, affecting over 20,000 enterprise tenants. The malicious extensions collect full URLs and AI chat content from platforms like ChatGPT and DeepSeek, potentially exposing organizations to leaks of confidential information. The attack chain involves reconnaissance, weaponization, delivery through trusted app stores, exploitation of user trust, installation for persistence, and regular data exfiltration to attacker-controlled infrastructure. This activity transforms a seemingly benign productivity tool into a persistent data collection mechanism embedded in daily enterprise browser usage.
A sophisticated cyber attack campaign combines social engineering and advanced malware techniques. Attackers pose as IT support to gain initial access, then deploy a modified version of the Havoc C2 framework. The malware uses DLL sideloading, indirect syscalls, and custom loaders to evade detection. After compromising the initial system, the attackers rapidly move laterally, establishing persistence through scheduled tasks and legitimate remote monitoring tools. The campaign demonstrates a blend of human-centric initial access methods and advanced technical evasion techniques, highlighting the need for comprehensive security measures spanning user awareness and technical controls.
Researchers at Infoblox have developed an advanced technique leveraging graph theory and SSL certificates to uncover threat actor operational relationships. The approach analyzes Certificate Transparency logs, using the Subject Alternative Name field in certificates to identify domains under common control. By modeling domains as nodes and certificate relationships as edges, the system reveals comprehensive threat infrastructures. This method enables discovery of new malicious domains, consolidation of threat actor identities, and early detection of emerging threats. The system processes millions of certificates daily, providing actionable intelligence on threat actor operations across various types of cybercriminal activities.
The phishing-as-a-service platform was used to send fraudulent emails to over 500,000 organizations every month. The post Tycoon 2FA Phishing Platform Dismantled in Global Takedown appeared first on SecurityWeek .
The hackers claim to have stolen 2GB of files, including 400,000 personal information records. The post New LexisNexis Data Breach Confirmed After Hackers Leak Files appeared first on SecurityWeek .
The attackers are sending out fake alerts claiming unauthorized access or master password changes. The post LastPass Warns of New Phishing Campaign appeared first on SecurityWeek .
Starting September 2026, new Chrome iterations will be released twice as fast, part of a two-week cycle. The post Google Plans Two-Week Release Schedule for Chrome appeared first on SecurityWeek .
The principles cover security, resilience against attacks and disasters, AI, and openness and interoperability. The post Global Coalition Publishes 6G Security and Resilience Principles appeared first on SecurityWeek .
Multiple phishing campaigns were identified using workplace meeting lures, PDF attachments, and abuse of legitimate binaries to deliver signed malware. The attacks used digitally signed executables masquerading as legitimate software to install remote monitoring and management (RMM) tools like ScreenConnect, Tactical RMM, and Mesh Agent. These tools enabled attackers to establish persistence and move laterally within compromised environments. The malware was signed using an Extended Validation certificate issued to TrustConnect Software PTY LTD. The campaigns demonstrate how familiar branding and trusted digital signatures can be exploited to bypass user suspicion and gain an initial foothold in enterprise networks.
Check Point Research has identified a Chinese-nexus advanced persistent threat group named Silver Dragon, targeting organizations in Southeast Asia and Europe since mid-2024. The group, likely operating under APT41, exploits public-facing servers and uses phishing emails for initial access. They deploy custom tools including GearDoor, a backdoor using Google Drive for command and control, SSHcmd for remote access, and SilverScreen for covert screen monitoring. Silver Dragon primarily focuses on government entities, utilizing Cobalt Strike beacons and DNS tunneling for communication. The group's sophisticated tactics and evolving toolkit demonstrate a well-resourced and adaptable threat actor.
Key Findings Introduction In recent months, Check Point Research (CPR) has been tracking a sophisticated, Chinese-aligned threat group whose activity demonstrates operational correlation with campaigns previously associated with APT41. We have designated this activity cluster as Silver Dragon. This group actively targets organizations in Southeast Asia and Europe, with a particular focus on government entities. […] The post Silver Dragon Targets Organizations in Southeast Asia and Europe appeared first on Check Point Research .
