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Malicious package

wmwk5bothabRubyGems

Advisory published Updated

wmwk5bothab is a confirmed malicious RubyGems package (MAL-2026-9400) 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 wmwk5bothab (RubyGems)

MAL-2026-9400
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall wmwk5bothab

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

b4bba1fd2892fc647d9514d408afd2a0d59ac36151b58955ac5d99124a5cdac2
8a22539d1c5ce6232236303c7189bab2e7f51f577c4dd40d3baaba0df6663430

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for wmwk5bothab (version 0.0.1).

  2. If you installed it — respond

    Remove wmwk5bothab 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 wmwk5bothab 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. wmwk5bothab 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-2026-04051RLUA-2026-09981

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks wmwk5bothab-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

wmwk5bothab (RubyGems) malicious package — MAL-2026-9400 | O3 Security