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Malicious package

m8405v5lmcRubyGems

Malicious code in m8405v5lmc (RubyGems) Remove it immediately and rotate any exposed credentials.

MAL-2026-8083
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall m8405v5lmc

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

f8825c655827c0706449325feeddf71df02ff21090abf4639d6f18f610bc7ce0

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 m8405v5lmc (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 m8405v5lmc across your stack and pipelines.

  2. If you installed it — respond

    Remove m8405v5lmc 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 m8405v5lmc 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 m8405v5lmc 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. m8405v5lmc 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-2026-02734

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks m8405v5lmc-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.

m8405v5lmc (RubyGems) malicious package — MAL-2026-8083 | O3 Security