Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
Malicious package

zjenc31c8c8RubyGems

Advisory published Updated

zjenc31c8c8 is a confirmed malicious RubyGems package (MAL-2026-9583) 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 zjenc31c8c8 (RubyGems)

MAL-2026-9583
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zjenc31c8c8

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

3b8bec25d0560bfb162039bb5ff07b2038333d82b3a4dbccf652f213cdcdc6a7
ab00dea64822de3f986c38d72fa3e57e617247f70f7ce131ae374514e4f22043

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zjenc31c8c8 (version 0.0.1).

  2. If you installed it — respond

    Remove zjenc31c8c8 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 zjenc31c8c8 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. zjenc31c8c8 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-2026-04234RLUA-2026-10171

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zjenc31c8c8-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

zjenc31c8c8 (RubyGems) malicious package — MAL-2026-9583 | O3 Security