Which versions of zrzjj4 are malicious?

The following RubyGems versions of zrzjj4 are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate zrzjj4 if I installed it?

Remove zrzjj4 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.

I already installed zrzjj4 — how do I know if it already compromised me?

If zrzjj4 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.

Is zrzjj4 part of a known attack campaign?

Yes — zrzjj4 is associated with the RLMA-2026-04411, RLUA-2026-10349 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find zrzjj4 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for zrzjj4 (version 0.0.1).

Malicious package

zrzjj4RubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

zrzjj4 is a confirmed malicious RubyGems package (MAL-2026-9760) 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 zrzjj4 (RubyGems)

MAL-2026-9760

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

gem uninstall zrzjj4

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

53df801a318d1967b000e8afdef39277fb2c81503342bb8ea1feb36c2da8dc46

5b37ebcfe0714d15d45f5773110b689f54a77bf735c2030877e4b0bf4b937379

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for zrzjj4 (version 0.0.1).
If you installed it — respond
Remove zrzjj4 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.
Did it already run?
If zrzjj4 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. zrzjj4 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-2026-04411RLUA-2026-10349

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks zrzjj4-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.

Malware detection Runtime egress monitoring

Explore

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