Malicious Chrome and Edge Extensions Steal Crypto, Credentials, and Browser Data

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Summary

Socket found 16 malicious modules delivered through Chrome and Edge extensions, some after legitimate add-ons were acquired and updated. They stole crypto and account data, exfiltrated browser history, and injected ClickFix lures; one Edge listing remained available at報

Key points

  • Socket uncovered 16 malicious modules with distinct functions and said the campaign may have been active since early 2024.
  • Researchers say five extensions were acquired from their original creators and infected through automatic updates after initially offering legitimate features.
  • The malware uses an encrypted WebSocket connection to download JavaScript modules, remove CSP headers, and inject scripts into visited websites.
  • Modules could drain cryptocurrency wallets, steal wallet seed phrases and account credentials, harvest Facebook and LinkedIn data, exfiltrate browser history, and display ClickFix lures.
  • One extension had at least 70,000 Chrome users and 10,000 Edge installs; Google removed it from the Chrome Web Store, but its Edge version remained available when Socket published its report.
  • Socket advises affected users to change passwords; cryptocurrency holders should move assets to a newly created wallet.

Article Details

Event Type
Malicious browser-extension campaign
Impact
Extensions for Google Chrome and Microsoft Edge deployed a malware framework with 16 reported modules. The modules could steal cryptocurrency, credentials, session and account data, and browser history, and inject ClickFix lures or seed-phrase phishing pages. One extension had at least 70,000 Chrome users and 10,000 Edge installs when it turned malicious; the article does not report confirmed victim or financial-loss totals.

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