nihzvdeowx5npm
Advisory published Updated
nihzvdeowx5 is a confirmed malicious npm package (MAL-2026-13830) that typosquats a legitimate package to trick installs (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in nihzvdeowx5 (npm)
What this malware does
The package contains only index.html (declared as main in package.json) and no JavaScript entry point, lifecycle scripts, or other module code. The HTML impersonates a Cloudflare Turnstile 'Just a moment' challenge page and runs obfuscator.io-obfuscated JavaScript that constructs a URL from string fragments beginning 'https://mail.microli' plus a runtime-decoded suffix and calls window.location.replace(...) on it, forwarding the current query string. Node.js cannot require() or import an HTML file, and no preinstall/install/postinstall hooks are declared, so npm install and require() of this package do not execute the redirect. The artifact appears designed to be served to a browser via a separate hosting/CDN path (for example, unpkg/jsdelivr) as part of a phishing lure rather than to attack developers who install the package.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
TyposquatFind it
Search your lockfiles and build artifacts for nihzvdeowx5 (version 1.0.0).
If you installed it — respond
nihzvdeowx5 is a typosquat — you almost certainly intended a legitimately-named package. Remove nihzvdeowx5, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If nihzvdeowx5 was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks nihzvdeowx5-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.