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Malicious package

lambx5165217RubyGems

Advisory published Updated

lambx5165217 is a confirmed malicious RubyGems package (MAL-2026-7848) 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 lambx5165217 (RubyGems)

MAL-2026-7848
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall lambx5165217

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

34014489fbc62e57f584b1793bb010cea8b0c6eed84eccca40d8f14dfd0a7ec1
dbf3239b09a0dccb2b6c48bdd1024066312c57ccc06100f00c96244ae3d8a8c7

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for lambx5165217 (version 0.0.1).

  2. If you installed it — respond

    Remove lambx5165217 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 lambx5165217 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. lambx5165217 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-2026-02499RLUA-2026-08314

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks lambx5165217-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

lambx5165217 (RubyGems) malicious package — MAL-2026-7848 | O3 Security