Detection rules › Sigma
Potential Remote Desktop Connection to Non-Domain Host
Detects logons using NTLM to hosts that are potentially not part of the domain.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control | T1219.002 Remote Access Tools: Remote Desktop Software |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| NTLM | 8001 | NTLM client blocked audit: Audit outgoing NTLM authentication traffic that would be blocked. |
Stages and Predicates
Stage 1: selection
TargetName|startswith: TERMSRV
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 |
|---|---|---|
TargetName | starts_with |
|