
SlowMist|Jul 03, 2025 03:10
🚨SlowMist TI Alert🚨
A massive malicious campaign involving dozens of fake #Firefox extensions designed to steal cryptocurrency wallet credentials is underway. Over 40 fake extensions impersonating trusted #wallets like MetaMask, Coinbase Wallet, Trust Wallet, Phantom, OKX, Keplr, and more are actively stealing wallet credentials. The campaign has been active since at least April 2025.
📌These extensions:
🔹Clone real codebases and inserted malicious logic
🔹Extract wallet credentials and exfiltrate to attacker-controlled servers (including IPs)
🔹Mimic branding/logos to trick users
🔹Inflate reviews to appear legitimate
⚠️Some of these are still live on the Firefox Add-ons store as of this week. Likely linked to a Russian-speaking threat actor, based on code comments and infrastructure metadata.🎯
🔒Recommendations:
🔹Don’t rely solely on ratings or branding — verify publisher identity
🔹Treat browser extensions as full software, with proper vetting
🔹Use an allowlist for approved extensions
🔹Continuously monitor extension behavior — they can auto-update silently
Stay vigilant!🛡️
(Source🔗: https://blog.koi.security/foxywallet-40-malicious-firefox-extensions-exposed-4c14419de486)
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