Detection rules › Sigma
Cloudflared Tunnels Related DNS Requests
Detects DNS requests to Cloudflared tunnels domains. Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control | T1071.001 Application Layer Protocol: Web Protocols, T1572 Protocol Tunneling |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 22 | DNSEvent (DNS query) |
Stages and Predicates
Stage 1: selection
or:
QueryName|endswith: .v2.argotunnel.com
QueryName|endswith: protocol-v2.argotunnel.com
QueryName|endswith: trycloudflare.com
QueryName|endswith: update.argotunnel.com
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
QueryName | ends_with |
|