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RustyWater: Muddy Water’s Rust-Based Implant

Jan 16, 2026 1:42:59 PM / by The Hivemind posted in Threat Bulletin, APT, Muddy Water, Spear Phishing, Rust Malware, Middle East targeting, RustyWater, RUSTRIC, Rust implant, Archer RAT

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Verticals Targeted: Diplomatic, Maritime, Financial, Telecom
Regions Targeted: Middle East
Related Families: Archer RAT / RUSTRIC

Executive Summary

A spear-phishing campaign linked to the Muddy Water APT group was observed deploying a new Rust-based implant called RustyWater against organizations in the Middle East. This evolution from legacy PowerShell and VBS tooling introduces enhanced modularity, anti-analysis features, and asynchronous command-and-control capabilities.

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