Which versions of irs_data are malicious?

The following RubyGems versions of irs_data are flagged malicious: 9.9.9, 9.9.99, 9.9.999, 9.9.9999, 9.9.99999, 9.9.999991, 9.9.9999911. Treat any of these as compromised.

How do I remediate irs_data if I installed it?

Remove irs_data 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 irs_data — how do I know if it already compromised me?

If irs_data 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 irs_data part of a known attack campaign?

Yes — irs_data is associated with the RLMA-2024-05753, RLUA-2024-10272, RLUA-2026-08235 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 irs_data across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for irs_data (7 malicious versions).

Malicious package

irs_dataRubyGems

Advisory published Jun 25, 2024Updated Sep 24, 2026

irs_data is a confirmed malicious RubyGems package (MAL-2024-6947) that executes malicious code on install (malicious versions 9.9.9, 9.9.99, 9.9.999…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in irs_data (RubyGems)

MAL-2024-6947

Immediate action

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

gem uninstall irs_data

Malicious versions

7 flagged

9.9.99.9.999.9.9999.9.99999.9.999999.9.9999919.9.9999911

Indicators of compromise (SHA-256)

de90667a696f7dad29983b6debf57e25c6a892de7ee6f42dc476f7407a28c1f8

37eccfbf7ebc7cfa61c28d7b89ff69cc48a1ac6afffa4920a25d552141a71354

be70d16a05f4ca93c6a407dbec81229f1c057a5b84ce42c38e4cc292d679d88d

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for irs_data (7 malicious versions).
If you installed it — respond
Remove irs_data 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 irs_data 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. irs_data on RubyGems has been identified as a malicious package (versions 9.9.9, 9.9.99, 9.9.999, 9.9.9999, 9.9.99999, 9.9.999991, 9.9.9999911 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-05753RLUA-2024-10272RLUA-2026-08235

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks irs_data-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

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