Detection rules › Kusto
Zscaler - Forbidden countries
'Detects suspicious ZPA connections from forbidden countries.'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access |
Rule body
id: b3d112b4-3e1e-11ec-9bbc-0242ac130002
name: Zscaler - Forbidden countries
description: |
'Detects suspicious ZPA connections from forbidden countries.'
severity: High
status: Available
requiredDataConnectors:
- connectorId: CustomLogsAma
datatypes:
- ZPA_CL
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- InitialAccess
relevantTechniques:
- T1190
- T1133
query: |
let bl_countries = dynamic(['CH', 'RU']); //List of countries from which you do not expect connections
ZPAEvent
| where DvcAction == 'open'
| where SrcGeoCountry in~ (bl_countries)
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = DstUserName
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: AccountCustomEntity
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
version: 1.0.2
kind: Scheduled
Stages and Predicates
Parameters
let bl_countries = dynamic(['CH', 'RU']);
Stage 1: source
ZPAEvent
Stage 2: where
| where DvcAction == 'open'
Stage 3: where
| where SrcGeoCountry in~ (bl_countries)
Stage 4: extend
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = DstUserName
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
DvcAction | eq |
| field:"DvcAction" kind:eq value:"open" |
SrcGeoCountry | in |
| field:"SrcGeoCountry" kind:in |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
AccountCustomEntity | extend |
IPCustomEntity | extend |