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Malicious package

wmwk6abRubyGems

Advisory published Updated

wmwk6ab is a confirmed malicious RubyGems package (MAL-2026-9403) 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 wmwk6ab (RubyGems)

MAL-2026-9403
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall wmwk6ab

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

e7e5b11d9cf9fc9c1464a277105f26af65fa99aa5d6379a2238e5eefd30ca17f
b53ddbd10922c6160dc5a57ae37236268b42af6d44794a67796497412154747d

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for wmwk6ab (version 0.0.1).

  2. If you installed it — respond

    Remove wmwk6ab 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 wmwk6ab 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. wmwk6ab 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-2026-04054RLUA-2026-09984

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks wmwk6ab-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

wmwk6ab (RubyGems) malicious package — MAL-2026-9403 | O3 Security