yangming708npm
yangming708 is a confirmed malicious npm package (MAL-2026-13845) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in yangming708 (npm)
What this malware does
The tarball contains only package.json and index.html. package.json declares main: "index.html", which is not a requirable Node module, and no preinstall/install/postinstall/prepare lifecycle scripts are declared. index.html contains an obfuscated script (wrapped in a fake Cloudflare 'Just a moment...' template) that, if opened in a browser, decodes an encoded string and calls window.location.replace to redirect to the resulting URL. Because npm install does not execute HTML and require()/import cannot load this main, installing or loading the package does not execute any code on a developer or build machine. The artifact looks like registry spam / a browser-side redirect page mispublished as an npm package, not a supply-chain attack against installers.
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
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for yangming708 (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging yangming708 across your stack and pipelines.
If you installed it — respond
Remove yangming708 from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If yangming708 was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks yangming708 before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks yangming708-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.