Which versions of zhcal57252b are malicious?

The following RubyGems versions of zhcal57252b are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate zhcal57252b if I installed it?

Remove zhcal57252b 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 zhcal57252b — how do I know if it already compromised me?

If zhcal57252b 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 zhcal57252b part of a known attack campaign?

Yes — zhcal57252b is associated with the RLMA-2026-04223, RLUA-2026-10160 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 zhcal57252b across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for zhcal57252b (version 0.0.1).

Malicious package

zhcal57252bRubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

zhcal57252b is a confirmed malicious RubyGems package (MAL-2026-9572) 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 zhcal57252b (RubyGems)

MAL-2026-9572

Immediate action

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

gem uninstall zhcal57252b

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

1f58499b3a87274a37022f83fc5db1d45e023e315409a2e230de6e778e0da126

e0616f738f9b1b5ef5fc6e0cc531c56308f74a2b7d115fe4bee72b53a791fbae

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for zhcal57252b (version 0.0.1).
If you installed it — respond
Remove zhcal57252b 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 zhcal57252b 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. zhcal57252b 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-2026-04223RLUA-2026-10160

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks zhcal57252b-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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