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Malicious package

m8402v3uigRubyGems

Advisory published Updated

m8402v3uig is a confirmed malicious RubyGems package (MAL-2026-8069) 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 m8402v3uig (RubyGems)

MAL-2026-8069
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall m8402v3uig

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

9288cc35be4094806a70e2c3361dceebbcb2ee44c5e51fb7063ccd09ec08d98f
ec19834f9884b885cef2622704c979ccc0552aee96320821ead98a84dd3e8c9a

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for m8402v3uig (version 0.0.1).

  2. If you installed it — respond

    Remove m8402v3uig 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 m8402v3uig 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. m8402v3uig 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-2026-02720RLUA-2026-08568

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks m8402v3uig-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

m8402v3uig (RubyGems) malicious package — MAL-2026-8069 | O3 Security