Ubiquiti - SSH from external source

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Id	0998a19d-8451-4cdd-8493-fc342816a197
Rulename	Ubiquiti - SSH from external source
Description	Detects remote to local (R2L) SSH connection to internal host.
Severity	Medium
Tactics	InitialAccess
Techniques	T1133
Required data connectors	CustomLogsAma
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Ubiquiti UniFi/Analytic Rules/UbiquitiR2LSSH.yaml
Version	1.0.2
Arm template	0998a19d-8451-4cdd-8493-fc342816a197.json

KQL

UbiquitiAuditEvent
| where EventCategory =~ 'firewall'
| where ipv4_is_private(SrcIpAddr) == 'False'
| where ipv4_is_private(DstIpAddr)
| where DstPortNumber == '22'
| extend IPCustomEntity = DstIpAddr

YAML

id: 0998a19d-8451-4cdd-8493-fc342816a197
entityMappings:
- fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
  entityType: IP
requiredDataConnectors:
- dataTypes:
  - Ubiquiti_CL
  connectorId: CustomLogsAma
triggerThreshold: 0
tactics:
- InitialAccess
relevantTechniques:
- T1133
version: 1.0.2
name: Ubiquiti - SSH from external source
status: Available
description: |
    'Detects remote to local (R2L) SSH connection to internal host.'
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Ubiquiti UniFi/Analytic Rules/UbiquitiR2LSSH.yaml
query: |
  UbiquitiAuditEvent
  | where EventCategory =~ 'firewall'
  | where ipv4_is_private(SrcIpAddr) == 'False'
  | where ipv4_is_private(DstIpAddr)
  | where DstPortNumber == '22'
  | extend IPCustomEntity = DstIpAddr  
queryPeriod: 1h
triggerOperator: gt
kind: Scheduled
queryFrequency: 1h
severity: Medium

ARM