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Malicious package

zztxtwtmp12RubyGems

Advisory published Updated

zztxtwtmp12 is a confirmed malicious RubyGems package (MAL-2026-9999) 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 zztxtwtmp12 (RubyGems)

MAL-2026-9999
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zztxtwtmp12

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

4f1b9d5a453243270599321dd977f6d9b063bd749d522804891b65e291bb0411
515bb6e6b0e777cdc2e4bb74235ae40ad7fb7b5a76ffc67e99be08ab48312965

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zztxtwtmp12 (version 0.0.1).

  2. If you installed it — respond

    Remove zztxtwtmp12 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.

  3. Did it already run?

    If zztxtwtmp12 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. zztxtwtmp12 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-2026-04650RLUA-2026-10588

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zztxtwtmp12-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.

Explore

zztxtwtmp12 (RubyGems) malicious package — MAL-2026-9999 | O3 Security