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Malicious package

oaipacnfmwfudRubyGems

Advisory published Updated

oaipacnfmwfud is a confirmed malicious RubyGems package (MAL-2026-8300) 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 oaipacnfmwfud (RubyGems)

MAL-2026-8300
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall oaipacnfmwfud

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

c9c5bbe9b74353f6c91c882910228a232c913abaf41fdba00f019c7c192a457b
f042a1c60803175a23154acd862b4e8bb09fd149c0c228107d85719e47f67301

Detection & response playbook

Malicious package
  1. Find it

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

  2. If you installed it — respond

    Remove oaipacnfmwfud 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 oaipacnfmwfud 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. oaipacnfmwfud 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-2026-02951RLUA-2026-08815

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks oaipacnfmwfud-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

oaipacnfmwfud (RubyGems) malicious package — MAL-2026-8300 | O3 Security