Which versions of tryb2zz are malicious?

The following RubyGems versions of tryb2zz are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate tryb2zz if I installed it?

Remove tryb2zz 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 tryb2zz — how do I know if it already compromised me?

If tryb2zz 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 tryb2zz part of a known attack campaign?

Yes — tryb2zz is associated with the RLMA-2026-03661, RLUA-2026-09585 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 tryb2zz across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for tryb2zz (version 0.0.1).

Malicious package

tryb2zzRubyGems

Advisory published Jul 7, 2026Updated Sep 24, 2026

tryb2zz is a confirmed malicious RubyGems package (MAL-2026-9010) 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 tryb2zz (RubyGems)

MAL-2026-9010

Immediate action

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

gem uninstall tryb2zz

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

d251297d2ed1325da9c388b59508c200d114a729632e86781d24b3acbdad0cd5

5aebae4b7b216a70e815f1931316144f20f38aa15e70bdfe4b58986cc964bf47

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for tryb2zz (version 0.0.1).
If you installed it — respond
Remove tryb2zz 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 tryb2zz 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. tryb2zz 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-2026-03661RLUA-2026-09585

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks tryb2zz-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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