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An investigation revealed a sophisticated cryptocurrency and credential-stealing operation using Amatera stealer as the primary payload. The attack chain leverages Cloudflare Workers to inject JavaScript stored on BNB Smart Chain, presenting fake Google CAPTCHA prompts that lead to WebDAV-based DLL execution. Two parallel infection chains were identified, one loading through a DLL named 'pf.ch' and another through 'verification.google', both delivering Amatera stealer with different secondary payloads. The 'pf.ch' variant deployed ZigCryptoStealer via NativeAOT loader and a Go-based reverse proxy, while the 'verification.google' variant installed NetSupport Manager with C2 infrastructure in Russia. The operation affects numerous countries with primary focus on stealing cryptocurrency wallets, credentials from password managers, and various authentication data through extensive collection rules targeting over 400 applications.

Cisco Talos investigated a multi-stage malware infection chain that begins with WebDAV-based DLL execution via the Windows rundll32.exe process. The infection chain uses a Cloudflare Worker to inject JavaScript code stored on the BNB Smart Chain blockchain, a technique called EtherHiding, to deliver payloads. Victims are tricked by a fake Google CAPTCHA prompt to execute commands that launch DLL loaders named "verification.google" and "pf.ch". The "pf.ch" loader deploys ZigCryptoStealer and a Go-based reverse proxy, while the "verification.google" loader installs an unauthorized instance of NetSupport Manager with a C2 server IP linked to Russia, indicating a likely Russian threat actor. The initial detection was from endpoint telemetry at a Ukrainian government organization in April 2026. Multiple infection chains delivering Amatera stealer exist, but no direct infrastructure links were found between them. The attack leverages WebDAV UNC paths, DLL sideloading, vulnerable drivers to disable endpoint detection and response (EDR) software, and blockchain-based code hosting to evade detection and maintain persistence.

Detailed information about ClearFake WebDAV infection chain delivers Amatera stealer, ZigCryptoStealer, and NetSupport Manager. Get real-time updates, technical

ClearFake WebDAV infection chain delivers Amatera stealer, ZigCryptoStealer, and NetSupport Manager - Live Threat Intelligence - Threat Radar | OffSeq.com

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ClearFake WebDAV infection chain delivers Amatera stealer, ZigCryptoStealer, and NetSupport Manager

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