Zscaler - ZPA connections by new user

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Id	236a7ec1-0120-40f2-a157-c1a72dde8bcb
Rulename	Zscaler - ZPA connections by new user
Description	Detects ZPA connections by new user.
Severity	Medium
Tactics	Persistence
Techniques	T1078
Required data connectors	CustomLogsAma
Kind	Scheduled
Query frequency	1h
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Zscaler Private Access (ZPA)/Analytic Rules/ZscalerZPAConnectionsByNewUser.yaml
Version	1.0.2
Arm template	236a7ec1-0120-40f2-a157-c1a72dde8bcb.json

KQL

let listUsers =
ZPAEvent 
| where TimeGenerated > ago(14d)
| where DvcAction == 'open'
| summarize ListofUsers = make_set(DstUserName) by DstUserName
| project ListofUsers;
ZPAEvent
| where DstUserName !in (listUsers)
| summarize EventCount = count() by DstUserName
| project-away EventCount
| extend AccountCustomEntity = DstUserName

YAML

relevantTechniques:
- T1078
name: Zscaler - ZPA connections by new user
queryFrequency: 1h
version: 1.0.2
triggerThreshold: 0
severity: Medium
requiredDataConnectors:
- connectorId: CustomLogsAma
  datatypes:
  - ZPA_CL
tactics:
- Persistence
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Zscaler Private Access (ZPA)/Analytic Rules/ZscalerZPAConnectionsByNewUser.yaml
query: |
  let listUsers =
  ZPAEvent 
  | where TimeGenerated > ago(14d)
  | where DvcAction == 'open'
  | summarize ListofUsers = make_set(DstUserName) by DstUserName
  | project ListofUsers;
  ZPAEvent
  | where DstUserName !in (listUsers)
  | summarize EventCount = count() by DstUserName
  | project-away EventCount
  | extend AccountCustomEntity = DstUserName  
kind: Scheduled
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
queryPeriod: 14d
triggerOperator: gt
id: 236a7ec1-0120-40f2-a157-c1a72dde8bcb
status: Available
description: |
    'Detects ZPA connections by new user.'

ARM