Detectionmediumtest

Cloudflared Tunnel Execution

Detects execution of the "cloudflared" tool to connect back to a tunnel. This was seen used by threat actors to maintain persistence and remote access to compromised networks.

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Launch

Janantha Marasinghe, Nasreddine Bencherchali (Nextron Systems)Created Wed May 17Updated Wed Dec 209a019ffc-3580-4c9d-8d87-079f7e8d3fd4windows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection:
        CommandLine|contains|all:
            - ' tunnel '
            - ' run '
        CommandLine|contains:
            - '-config '
            - '-credentials-contents '
            - '-credentials-file '
            - '-token '
    condition: selection