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Malicious package

zrzjtfe243RubyGems

Advisory published Updated

zrzjtfe243 is a confirmed malicious RubyGems package (MAL-2026-9763) 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 zrzjtfe243 (RubyGems)

MAL-2026-9763
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zrzjtfe243

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

c26569d42b6cf0fdd359814566298ad99fa72de71001a293e03736d47bd04216
1dd41b23a62b70636e3c071606309514a1f38362275546fb37aeb374bf6dd0d3

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zrzjtfe243 (version 0.0.1).

  2. If you installed it — respond

    Remove zrzjtfe243 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 zrzjtfe243 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. zrzjtfe243 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-2026-04414RLUA-2026-10352

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zrzjtfe243-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

zrzjtfe243 (RubyGems) malicious package — MAL-2026-9763 | O3 Security