luluking1npm
Advisory published Updated
luluking1 is a confirmed malicious npm package (MAL-2026-14250) that executes malicious code on install (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in luluking1 (npm)
What this malware does
index.js stores a remote URL and a curl -sL -o command as numeric char-code arrays and reconstructs them at runtime with String.fromCharCode.apply, then fetches and executes the retrieved content at install/import time. Hiding the destination and the download-and-run command behind char-code obfuscation is inconsistent with any legitimate installer or SDK, which references URLs in plain form. The reconstructed shell invocation downloads an attacker-controlled payload to disk and runs it on the installer's machine, giving whoever published the package arbitrary code execution on any host that installs it.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for luluking1 (version 0.0.1).
If you installed it — respond
Remove luluking1 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 luluking1 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 luluking1-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.