Detection rules › Kusto
PaloAlto - Forbidden countries
'Detects suspicious connections from forbidden countries.'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access |
Rule body
id: 9fcc7734-4d1b-11ec-81d3-0242ac130003
name: PaloAlto - Forbidden countries
description: |
'Detects suspicious connections from forbidden countries.'
severity: Medium
status: Available
requiredDataConnectors:
- connectorId: CefAma
dataTypes:
- CommonSecurityLog
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- InitialAccess
relevantTechniques:
- T1190
- T1133
query: |
let bl_countries = dynamic(['CH', 'RU']);
PaloAltoCDLEvent
| where EventResourceId =~ 'TRAFFIC'
| where MaliciousIPCountry in (bl_countries)
| summarize count() by DstUsername, SrcIpAddr
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = DstUsername
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: AccountCustomEntity
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
version: 1.0.4
kind: Scheduled
Stages and Predicates
Parameters
let bl_countries = dynamic(['CH', 'RU']);
Stage 1: source
PaloAltoCDLEvent
Stage 2: where
| where EventResourceId =~ 'TRAFFIC'
Stage 3: where
| where MaliciousIPCountry in (bl_countries)
Stage 4: summarize
| summarize count() by DstUsername, SrcIpAddr
Stage 5: extend
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = DstUsername
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
EventResourceId | eq |
| field:"EventResourceId" kind:eq value:"TRAFFIC" |
MaliciousIPCountry | in |
| field:"MaliciousIPCountry" kind:in |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
DstUsername | summarize |
SrcIpAddr | summarize |
AccountCustomEntity | extend |
IPCustomEntity | extend |