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Malicious package

nwcid311RubyGems

Advisory published Updated

nwcid311 is a confirmed malicious RubyGems package (MAL-2026-8139) 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 nwcid311 (RubyGems)

MAL-2026-8139
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall nwcid311

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

d8c65a0360fb027e676b8161f11db964553bdba4383edf9e280b6647492b5675
d4ad1fbd030e7725c411d78f6057758429ddd36f0701753b8c8da638698479b4

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for nwcid311 (version 0.0.1).

  2. If you installed it — respond

    Remove nwcid311 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 nwcid311 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. nwcid311 on RubyGems 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

RLMA-2026-02790RLUA-2026-08654

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks nwcid311-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

nwcid311 (RubyGems) malicious package — MAL-2026-8139 | O3 Security