Which versions of zwtgld are malicious?

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

How do I remediate zwtgld if I installed it?

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

If zwtgld 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 zwtgld part of a known attack campaign?

Yes — zwtgld is associated with the RLMA-2026-04567, RLUA-2026-10505 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 zwtgld across my projects, lockfiles, and CI pipelines?

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

Malicious package

zwtgldRubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

zwtgld is a confirmed malicious RubyGems package (MAL-2026-9916) 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 zwtgld (RubyGems)

MAL-2026-9916

Immediate action

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

gem uninstall zwtgld

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

ec673e12b9fafc6c5054e208bb81ea0a84135a4a75814c9ef024444d1faddcc1

787dc673b7a3d8f79435ae2e72e62a46895b942e1ec5d5afc3c37161f9f421cb

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for zwtgld (version 0.0.1).
If you installed it — respond
Remove zwtgld 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 zwtgld 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. zwtgld 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-2026-04567RLUA-2026-10505

References

Credits

ReversingLabs · finder

Detect & block this

O3 blocks zwtgld-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

All malware advisories How O3 detects malware Vulnerability database