PaloAlto - User privileges was changed

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Id	38f9e010-51ca-11ec-bf63-0242ac130002
Rulename	PaloAlto - User privileges was changed
Description	Detects changing of user privileges.
Severity	Medium
Tactics	InitialAccess
Techniques	T1190 T1133
Required data connectors	CefAma
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/PaloAltoCDL/Analytic Rules/PaloAltoCDLPrivilegesWasChanged.yaml
Version	1.0.4
Arm template	38f9e010-51ca-11ec-bf63-0242ac130002.json

KQL

let q_period = 14d;
let dt_lookBack = 24h;
let p = PaloAltoCDLEvent
| where TimeGenerated between (ago(q_period)..ago(dt_lookBack))
| summarize OldPrivileges = make_set(DestinationUserPrivileges) by DstUsername;
PaloAltoCDLEvent
| where TimeGenerated > ago(dt_lookBack)
| summarize NewPrivileges = make_set(DestinationUserPrivileges) by DstUsername
| join kind=innerunique (p) on DstUsername
| where tostring(OldPrivileges) != tostring(NewPrivileges)
| extend AccountCustomEntity = DstUsername

YAML

relevantTechniques:
- T1190
- T1133
name: PaloAlto - User privileges was changed
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: CefAma
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
  entityType: Account
triggerThreshold: 0
id: 38f9e010-51ca-11ec-bf63-0242ac130002
tactics:
- InitialAccess
version: 1.0.4
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoCDL/Analytic Rules/PaloAltoCDLPrivilegesWasChanged.yaml
queryPeriod: 14d
kind: Scheduled
queryFrequency: 1h
severity: Medium
status: Available
description: |
    'Detects changing of user privileges.'
query: |
  let q_period = 14d;
  let dt_lookBack = 24h;
  let p = PaloAltoCDLEvent
  | where TimeGenerated between (ago(q_period)..ago(dt_lookBack))
  | summarize OldPrivileges = make_set(DestinationUserPrivileges) by DstUsername;
  PaloAltoCDLEvent
  | where TimeGenerated > ago(dt_lookBack)
  | summarize NewPrivileges = make_set(DestinationUserPrivileges) by DstUsername
  | join kind=innerunique (p) on DstUsername
  | where tostring(OldPrivileges) != tostring(NewPrivileges)
  | extend AccountCustomEntity = DstUsername  
triggerOperator: gt

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/38f9e010-51ca-11ec-bf63-0242ac130002')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/38f9e010-51ca-11ec-bf63-0242ac130002')]",
      "properties": {
        "alertRuleTemplateName": "38f9e010-51ca-11ec-bf63-0242ac130002",
        "customDetails": null,
        "description": "'Detects changing of user privileges.'\n",
        "displayName": "PaloAlto - User privileges was changed",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoCDL/Analytic Rules/PaloAltoCDLPrivilegesWasChanged.yaml",
        "query": "let q_period = 14d;\nlet dt_lookBack = 24h;\nlet p = PaloAltoCDLEvent\n| where TimeGenerated between (ago(q_period)..ago(dt_lookBack))\n| summarize OldPrivileges = make_set(DestinationUserPrivileges) by DstUsername;\nPaloAltoCDLEvent\n| where TimeGenerated > ago(dt_lookBack)\n| summarize NewPrivileges = make_set(DestinationUserPrivileges) by DstUsername\n| join kind=innerunique (p) on DstUsername\n| where tostring(OldPrivileges) != tostring(NewPrivileges)\n| extend AccountCustomEntity = DstUsername\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1133",
          "T1190"
        ],
        "templateVersion": "1.0.4",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}