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Week in review: AiTM phishing kit used to hijack AWS accounts, year-long malware campaign targets HR
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WordlistLoader Delivers Amatera via ClickFix, SynkLoader Phishes Windows Passwords
Gen Digital details WordlistLoader delivering Amatera Stealer via ClickFix and EtherHiding, while SynkLoader phishes Windows credentials through Microsoft Teams.
Gen Digital identified WordlistLoader, an intermediate stage that reconstructs shellcode encoded as plain English words (or 16-byte UUID chunks) and loads Amatera Stealer 4.3.3-alpha1, delivered through ClearFake ClickFix prompts on compromised websites. The chain uses EtherHiding to fetch JavaScript from a blockchain smart contract, hidden cmd.exe via conhost, WebDAV-mounted shares with rundll32 execution, and ETW bypass via hardware breakpoints. The stealer adds hardened WoW64 syscalls, Heaven's Gate indirect-syscall trampolines and a redesigned application-bound encryption bypass. Separately, Expel observed SynkLoader distributed via Microsoft Teams phishing impersonating IT service desks, installing an MSI from Azure blob storage and serving a fake lock screen to capture credentials.
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TWINLOOT Abuses SharePoint and Teams to Steal Credentials and Move Across Networks
Ontinue disclosed TWINLOOT, a Python implant hiding C2 in SharePoint dead drops and Teams TURN relays, harvesting credentials and pivoting via reverse SOCKS5.
Ontinue's Cyber Defense Center identified TWINLOOT during a July 2026 campaign investigation: a modular, PyArmor-hardened Python implant (a 39 MB bootstrap-fat.pyc loader) whose entire C2 infrastructure lives inside trusted Microsoft services. Tasking flows through SharePoint Online file dead drops polled every 15 seconds via the Microsoft Graph API, while interactive operator access uses WebRTC DataChannels relayed by Microsoft Teams TURN servers; Graph traffic is driven by the victim's own headless Edge browser. The implant harvests Windows credentials with fake lock screens, offers a reverse SOCKS5 pivot for lateral movement to SMB, RDP, WinRM, and MSSQL, executes commands, and persists on hosts. Initial access is assessed to be Teams social engineering masquerading as IT support, prompting a PowerShell command to download the payload.
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WindRelay Android Malware Turns Victims' Phones Into NFC Relays for Payment Fraud
Group-IB details WindRelay, a new Android NFC relay malware paired with SpyNote RAT to relay card data live for contactless payment fraud and loans.
Group-IB identified WindRelay, a previously unseen Android near-field-communication relay malware first seen in the wild in late August 2025, deployed alongside the SpyNote RAT in a contactless payment fraud scheme. Victims are lured via personalized phishing, smishing, or vishing into sideloading an app; SpyNote's Accessibility access silently installs WindRelay, whose reader component captures live EMV APDU card data over NFC and relays it via WebSocket C2 to an emulator component at a payment terminal. The scheme enables dual monetization: RAT-driven remote access to take out digital loans and NFC relay for physical card-present cashouts, known as Ghost Tap. Twenty-three WindRelay samples uploaded to VirusTotal between November 2025 and July 2026 impersonate financial institutions in Czechia, Slovakia, and Slovenia, with the technique also spreading to Brazil and Poland.
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⚡ Weekly Recap: iPhone Spyware, Microsoft 0-Day, TokenBreak Hack, AI Data Leaks and More
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