Which versions of zw_cal_more are malicious?

The following RubyGems versions of zw_cal_more are flagged malicious: 0.0.1341. Treat any of these as compromised.

How do I remediate zw_cal_more if I installed it?

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

If zw_cal_more 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 zw_cal_more part of a known attack campaign?

Yes — zw_cal_more is associated with the RLMA-2026-04468, RLUA-2026-10406 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 zw_cal_more across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for zw_cal_more (version 0.0.1341).

Malicious package

zw_cal_moreRubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

zw_cal_more is a confirmed malicious RubyGems package (MAL-2026-9817) that executes malicious code on install (malicious version 0.0.1341). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in zw_cal_more (RubyGems)

MAL-2026-9817

Immediate action

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

gem uninstall zw_cal_more

Malicious versions

1 flagged

0.0.1341

Indicators of compromise (SHA-256)

7096e9c9454b0987e1f5e3d314545b31ba7bee25ed4604dfd6d2a3d694185d3a

8f28cd21c5c9faf1f8319cef657cee082bde521a09a7b83ac3dcafc4667d2c71

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for zw_cal_more (version 0.0.1341).
If you installed it — respond
Remove zw_cal_more 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 zw_cal_more 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. zw_cal_more on RubyGems has been identified as a malicious package (version 0.0.1341 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2026-04468RLUA-2026-10406

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks zw_cal_more-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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