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Malicious package

zrgvf4aceRubyGems

Advisory published Updated

zrgvf4ace is a confirmed malicious RubyGems package (MAL-2026-9714) 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 zrgvf4ace (RubyGems)

MAL-2026-9714
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zrgvf4ace

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

d57fb92f4fa985e5da359bb16fe14af9f6a699092f0c37f0dab077d17cb3d599
fa820c267c8afcb13cb21c57dd3e626fad500066888e463c4c98d32b6055a5ed

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zrgvf4ace (version 0.0.1).

  2. If you installed it — respond

    Remove zrgvf4ace 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 zrgvf4ace 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. zrgvf4ace 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-2026-04365RLUA-2026-10303

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zrgvf4ace-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

zrgvf4ace (RubyGems) malicious package — MAL-2026-9714 | O3 Security