Suspicious Cloudflared Tunnel Connections Cleanup (via process_creation)

title: Suspicious Cloudflared Tunnel Connections Cleanup (via process_creation)
id: 671a3f6e-3d35-52fd-9186-858e035be915
status: stable
description: This rule detects execution of the "cloudflared" tool with the tunnel "cleanup" flag to cleanup tunnel connections.
references:
    - https://attack.mitre.org/techniques/T1572/
    - https://attack.mitre.org/techniques/T1090/
    - https://attack.mitre.org/techniques/T1102/
    - https://github.com/cloudflare/cloudflared
    - https://developers.cloudflare.com/cloudflare-one/connections/connect-apps
author: Huntrule Team
date: 2026-04-30
tags:
    - attack.command-and-control
    - attack.t1102
    - attack.t1090
    - attack.t1572
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - ' tunnel '
            - 'cleanup '
        CommandLine|contains:
            - '-config '
            - '-connector-id '
    condition: selection
falsepositives:
    - Unknown
level: medium