Detection rules › Sigma
Network Connection Initiated To DevTunnels Domain
Detects network connections to Devtunnels domains initiated by a process on a system. Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control | T1572 Protocol Tunneling |
| Exfiltration | T1567.001 Exfiltration Over Web Service: Exfiltration to Code Repository |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 3 | Network connection |
Stages and Predicates
Stage 1: selection
DestinationHostname|endswith: .devtunnels.ms
Initiated: true
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 |
|---|---|---|
DestinationHostname | ends_with |
|
Initiated | eq |
|