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All news with #katz stealer tag

Wed, October 15, 2025

PhantomVAI Loader Delivers Multiple Infostealers Worldwide

🛡️The Unit 42 report details a multi-stage phishing campaign that leverages heavily obfuscated JavaScript/VBS and PowerShell to load a C# .NET loader named PhantomVAI, which hides DLL payloads inside image files via steganography. The loader's VAI routine performs virtual-machine detection, establishes persistence (scheduled tasks, wscript, Run keys) and retrieves payloads by process hollowing into legitimate host processes. Observed final payloads include Katz Stealer, AsyncRAT and FormBook. Palo Alto Networks' Advanced WildFire, Cortex XDR and XSIAM have updated protections and indicators of compromise.

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