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

id: 236a7ec1-0120-40f2-a157-c1a72dde8bcb
requiredDataConnectors:
- connectorId: CustomLogsAma
  datatypes:
  - ZPA_CL
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
  entityType: Account
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  
triggerThreshold: 0
kind: Scheduled
severity: Medium
queryPeriod: 14d
tactics:
- Persistence
queryFrequency: 1h
status: Available
relevantTechniques:
- T1078
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Zscaler Private Access (ZPA)/Analytic Rules/ZscalerZPAConnectionsByNewUser.yaml
description: |
    'Detects ZPA connections by new user.'
name: Zscaler - ZPA connections by new user
version: 1.0.2

ARM