Sigma medium test sigma

Network Connection Initiated To Cloudflared Tunnels Domains

Detects network connections to Cloudflared tunnels domains initiated by a process on the system. Attackers can abuse that feature to establish a reverse shell or persistence on a machine.

View Source

Detection Logic

{
  "selection": {
    "Initiated": "true",
    "DestinationHostname
| endswith": [
      ".v2.argotunnel.com",
      "protocol-v2.argotunnel.com",
      "trycloudflare.com",
      "update.argotunnel.com"
    ]
  },
  "condition": "selection"
}

False Positives

⚠ Legitimate use of cloudflare tunnels will also trigger this.

Field Validations

Loading…

Comments (0)

Loading comments...