InstallFix malvertising campaign spreads fake Claude Code installers to deliver Amatera Stealer
Push Security reported a new ClickFix-style social-engineering campaign dubbed InstallFix that uses Google-sponsored search ads to drive developers to near-identical cloned “install” pages for Anthropic Claude Code and similar AI coding tools. Victims are prompted to copy/paste terminal commands from the fake pages; executing them installs Amatera Stealer, enabling credential theft and potential access to enterprise development environments.
Separate reporting highlighted adjacent browser-based tradecraft: a previously legitimate Chrome extension (QuickLens – Search Screen with Google Lens) with roughly 7,000 users was updated to deploy ClickFix attacks, strip web security headers, and steal cryptocurrency wallet seed phrases before being removed from the Chrome Web Store. A weekly threat bulletin also noted unrelated incidents (e.g., ransomware and data breaches) and separate AI-themed malicious extensions that harvest LLM chat histories, but those items are not part of the InstallFix/Claude Code malvertising campaign itself.
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