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Malicious package

zswmin111123RubyGems

Advisory published Updated

zswmin111123 is a confirmed malicious RubyGems package (MAL-2026-9804) 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 zswmin111123 (RubyGems)

MAL-2026-9804
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall zswmin111123

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

96fac240e49b9e1bc6f4b4214a22501000ab75e622e11182b52f6197b9a9b6b8
9d4a5c7fd5e5be93888f8c9c463c566e92a06b2bd7840fbe61ee9d80b327f6bc

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for zswmin111123 (version 0.0.1).

  2. If you installed it — respond

    Remove zswmin111123 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 zswmin111123 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. zswmin111123 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-2026-04455RLUA-2026-10393

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks zswmin111123-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

zswmin111123 (RubyGems) malicious package — MAL-2026-9804 | O3 Security