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Malicious package

zrgvq3b2fRubyGems

Advisory published Updated

zrgvq3b2f is a confirmed malicious RubyGems package (MAL-2026-9737) 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 zrgvq3b2f (RubyGems)

MAL-2026-9737
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zrgvq3b2f

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

c447f76de3b27d363f2e0f4ee482d6a97def8f72d0e6c3e8e2d3b7261eecc990
cada8b54b6a649034d7e5e2af7775e36d8ddc50017bc90dbbb91d9d81587e504

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zrgvq3b2f (version 0.0.1).

  2. If you installed it — respond

    Remove zrgvq3b2f 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 zrgvq3b2f 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. zrgvq3b2f 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-2026-04388RLUA-2026-10326

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zrgvq3b2f-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

zrgvq3b2f (RubyGems) malicious package — MAL-2026-9737 | O3 Security