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The threat actor known as Water Saci is actively evolving its tactics, switching to a sophisticated, highly layered infection chain that uses HTML Application (HTA) files and PDFs to propagate a worm that deploys a banking trojan via WhatsApp in attacks targeting users in Brazil

More from The Hacker News 4 Dec 2025, 4:32 a.m. Banking Brazil Facebook Fraud Infection PowerShell Python Threat Actor Trojan Worm

Cybersecurity researchers have disclosed details of a new campaign that leverages a combination of social engineering and WhatsApp hijacking to distribute a Delphi-based banking trojan named Eternidade Stealer as part of attacks targeting users in Brazil

More from The Hacker News 20 Nov 2025, 4:35 a.m. Banking Brazil Command and Control Disclosure Facebook Python Research Social Engineering Threat Actor Trojan Worm