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Silent Swap browser-extension clipboard clipper

Malware Activity
First reported
Last updated
Happening score
H score 36
1 unique sources, 1 articles

Summary

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The Silent Swap malware activity now installs malicious Chromium extensions that intercept copied wallet addresses and reroute cryptocurrency transfers to attacker-controlled wallets, creating direct financial-loss risk for affected users. The activity also steals other clipboard-derived secrets and hides behind a benign-looking Google Notes extension. It uses unsigned .NET and Golang installers and browser tampering to load silently across Chromium-based browsers.

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Timeline

  1. 30.06.2026 18:40 2 articles · 15d ago

    Silent Swap browser extension replaces copied wallet addresses

    Initial Disclosure

    McAfee Labs flagged Silent Swap, an active browser-extension campaign that uses unsigned .NET and Golang installers to deploy a malicious Chromium extension masquerading as Google Notes. The extension intercepts wallet addresses copied into the clipboard and replaces them with attacker-controlled values to divert cryptocurrency, while EtherHiding is used to resolve active C2 details and browser preference-file tampering helps the extension persist and load silently across Chromium-based browsers. Telemetry indicates infections are globally distributed, with a higher concentration in India and additional victims in the U.S., Brazil, Indonesia, and Spain.

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