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Malicious package

nileninjapkg5npm

Advisory published Updated

nileninjapkg5 is a confirmed malicious npm package (MAL-2025-48374) that executes malicious code on install (malicious versions 1.0.0, 1.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in nileninjapkg5 (npm)

MAL-2025-48374
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall nileninjapkg5

What this malware does

The package communicates with a domain associated with malicious activity.

Malicious versions

2 flagged
1.0.01.1.0

Indicators of compromise (SHA-256)

cf4d0345303a2c0525ecc8bd1b2a1e3d30efbaf6c87609a970faf16e246f1ad9
855b999555760e8533cff916b9c19ad6309a5b7e11f3f892dda932d5d29044fd

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for nileninjapkg5 (2 malicious versions).

  2. If you installed it — respond

    Remove nileninjapkg5 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 nileninjapkg5 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. nileninjapkg5 on npm has been identified as a malicious package (versions 1.0.0, 1.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-05439RLUA-2026-01454

Credits

  • Amazon Inspector · finder
  • ReversingLabs · finder

Detect & block this

O3 blocks nileninjapkg5-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

nileninjapkg5 (npm) malicious package — MAL-2025-48374 | O3 Security