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Malicious package

lbrssebmlsahtRubyGems

Advisory published Updated

lbrssebmlsaht is a confirmed malicious RubyGems package (MAL-2026-7944) 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 lbrssebmlsaht (RubyGems)

MAL-2026-7944
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall lbrssebmlsaht

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

5247e1a41756d6c03a4ed93d5426246c8351f5086c86bd4e9bbb675025b811c9
46e0ac51176c995b4b450da097898a827d6bfca1b907d7125b6799613b5d3c30

Detection & response playbook

Malicious package
  1. Find it

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

  2. If you installed it — respond

    Remove lbrssebmlsaht 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 lbrssebmlsaht 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. lbrssebmlsaht 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-2026-02595RLUA-2026-08412

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks lbrssebmlsaht-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

lbrssebmlsaht (RubyGems) malicious package — MAL-2026-7944 | O3 Security