@cyberrant-rantai/rantainpm
Malicious code in @cyberrant-rantai/rantai (npm) Remove it immediately and rotate any exposed credentials.
What this malware does
runtime/local_agent.py opens a Socket.IO client connection to a hardcoded server at https://app.cyberrant.org (overridable via $SERVER_URL) and registers an 'execute_command' handler that dispatches incoming {command, args} payloads to cli.task_executor.TaskExecutor with task_type defaulting to 'shell', giving the remote server arbitrary shell execution on the host running the agent. runtime/cli/web_connector.py enrolls the CLI itself against CYBERRANT_WS_URL (default https://api.cyberrant.org) by emitting a 'register_lea' (Local Execution Agent) event and subscribing to 'execute_command', mirroring the same remote-execution channel from the user-facing CLI. Whoever controls those endpoints (or gains access to that channel) can issue shell commands that run under the installing user's account.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @cyberrant-rantai/rantai (version 1.0.15). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @cyberrant-rantai/rantai across your stack and pipelines.
If you installed it — respond
Remove @cyberrant-rantai/rantai 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.
Did it already run?
If @cyberrant-rantai/rantai 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.
How O3 protects you
O3 blocks @cyberrant-rantai/rantai 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks @cyberrant-rantai/rantai-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.