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Malicious package

uuext4c477bRubyGems

Malicious code in uuext4c477b (RubyGems) Remove it immediately and rotate any exposed credentials.

MAL-2026-9035
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall uuext4c477b

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

87237ce68406237a640797eb3ad6c5dd4b8ee79f18b5f88ae2bc76adc9a4ce50

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for uuext4c477b (version 0.0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging uuext4c477b across your stack and pipelines.

  2. If you installed it — respond

    Remove uuext4c477b 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 uuext4c477b was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks uuext4c477b before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. uuext4c477b 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-2026-03686

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks uuext4c477b-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.

uuext4c477b (RubyGems) malicious package — MAL-2026-9035 | O3 Security