Detection rules › Sigma
RDP Over Reverse SSH Tunnel
Detects svchost hosting RDP termsvcs communicating with the loopback address and on TCP port 3389
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Lateral Movement | T1021.001 Remote Services: Remote Desktop Protocol |
| Command & Control | T1572 Protocol Tunneling |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 3 | Network connection |
Stages and Predicates
Stage 1: all of selection_img
Image|endswith: '\svchost.exe'
Initiated: true
SourcePort: 3389
Stage 2: all of selection_destination
or:
DestinationIp|cidr: '127.0.0.0/8'
DestinationIp|cidr: '::1/128'
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 |
|---|---|---|
DestinationIp | cidr_match |
|
Image | ends_with |
|
Initiated | eq |
|
SourcePort | eq |
|
Neighbors
Stricter alternatives (narrower than this rule)
The rules below may be useful if you find the current rule is too noisy / lacks specificity.
- RDP to HTTP or HTTPS Target Ports (adds 1 filter)