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Malicious package

slnprobe4RubyGems

Malicious code in slnprobe4 (RubyGems) Remove it immediately and rotate any exposed credentials.

MAL-2026-8718
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
gem uninstall slnprobe4

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

981c556e6a4150ec17dfca013cee6eef566478a4b7c19862cc9382c0137f8f30

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 slnprobe4 (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 slnprobe4 across your stack and pipelines.

  2. If you installed it — respond

    Remove slnprobe4 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 slnprobe4 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 slnprobe4 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. slnprobe4 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-2026-03369

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks slnprobe4-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.

slnprobe4 (RubyGems) malicious package — MAL-2026-8718 | O3 Security