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Malicious package

lambQ4342RubyGems

Advisory published Updated

lambQ4342 is a confirmed malicious RubyGems package (MAL-2026-7836) 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 lambQ4342 (RubyGems)

MAL-2026-7836
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall lambQ4342

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

de3f0cf667d6e459e23258d2397a107e55212fddfb85a887d46e2a3d4d5601dd
665129b6943b4d04a94cd8f27f49645ec48fe17ce0c374292a5c718c28a9af34

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for lambQ4342 (version 0.0.1).

  2. If you installed it — respond

    Remove lambQ4342 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 lambQ4342 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. lambQ4342 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-2026-02438RLUA-2026-08253

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks lambQ4342-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

lambQ4342 (RubyGems) malicious package — MAL-2026-7836 | O3 Security