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Malicious package

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)

MAL-2026-14250
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall luluking1

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

1 flagged
0.0.1

Indicators of compromise (SHA-256)

fdd9bc7980d937f728e8beb92d789d75a1dc02fd56bdfb545cd33f255952bcf4

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for luluking1 (version 0.0.1).

  2. 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.

  3. 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

No. luluking1 on npm has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-018361

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.

Explore

luluking1 (npm) malicious package — MAL-2026-14250 | O3 Security