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Malicious package

zbzrjincf11b0RubyGems

Advisory published Updated

zbzrjincf11b0 is a confirmed malicious RubyGems package (MAL-2026-9562) 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 zbzrjincf11b0 (RubyGems)

MAL-2026-9562
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zbzrjincf11b0

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

59aff083aa2812d99892d6ab2e8eb61a9cdac8e7bb4a56fe7c2df26f1d896d06
720be6ea28ccd0944ca9eebc06ee470225c0bad3f952ec1424d090b075b88ce6

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zbzrjincf11b0 (version 0.0.1).

  2. If you installed it — respond

    Remove zbzrjincf11b0 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 zbzrjincf11b0 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. zbzrjincf11b0 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-2026-04213RLUA-2026-10149

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zbzrjincf11b0-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

zbzrjincf11b0 (RubyGems) malicious package — MAL-2026-9562 | O3 Security