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Malicious package

lcrzsrkyseaRubyGems

Advisory published Updated

lcrzsrkysea is a confirmed malicious RubyGems package (MAL-2026-7987) 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 lcrzsrkysea (RubyGems)

MAL-2026-7987
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall lcrzsrkysea

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

d92dd1e9e5beca0ce22668ac56b3a553f89169fd597e6e282bcf749824e09c37
33f26b7b3f1ba2e1a6270ca41075b1353b1e433d136ff92d90da6d1f0f73a299

Detection & response playbook

Malicious package
  1. Find it

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

  2. If you installed it — respond

    Remove lcrzsrkysea 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 lcrzsrkysea 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. lcrzsrkysea 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-2026-02638RLUA-2026-08455

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks lcrzsrkysea-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

lcrzsrkysea (RubyGems) malicious package — MAL-2026-7987 | O3 Security