CyberArkEPM - Multiple attack types | Microsoft Sentinel Analytic Rules

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Id	c02f96b4-057b-4e63-87af-6376ef7a081b
Rulename	CyberArkEPM - Multiple attack types
Description	This rule triggers on multiple attack attemts triggered by same user.
Severity	High
Tactics	Execution
Techniques	T1204
Required data connectors	CyberArkEPM
Kind	Scheduled
Query frequency	10m
Query period	10m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyberArkEPM/Analytic%20Rules/CyberArkEPMMultipleAttackAttempts.yaml
Version	1.0.0
Arm template	c02f96b4-057b-4e63-87af-6376ef7a081b.json

KQL

CyberArkEPM
| where EventSubType =~ 'AttackAttempt'
| summarize LatestAttackTime=max(EventEndTime), att=makeset(EventMessage) by ActorUsername
| where array_length(att) > 1
| extend AccountCustomEntity = ActorUsername

YAML

entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
query: |
  CyberArkEPM
  | where EventSubType =~ 'AttackAttempt'
  | summarize LatestAttackTime=max(EventEndTime), att=makeset(EventMessage) by ActorUsername
  | where array_length(att) > 1
  | extend AccountCustomEntity = ActorUsername
id: c02f96b4-057b-4e63-87af-6376ef7a081b
queryFrequency: 10m
version: 1.0.0
severity: High
relevantTechniques:
- T1204
name: CyberArkEPM - Multiple attack types
kind: Scheduled
tactics:
- Execution
requiredDataConnectors:
- dataTypes:
  - CyberArkEPM
  connectorId: CyberArkEPM
description: |
  'This rule triggers on multiple attack attemts triggered by same user.'
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyberArkEPM/Analytic%20Rules/CyberArkEPMMultipleAttackAttempts.yaml
triggerOperator: gt
triggerThreshold: 0
queryPeriod: 10m

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/c02f96b4-057b-4e63-87af-6376ef7a081b')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c02f96b4-057b-4e63-87af-6376ef7a081b')]",
      "properties": {
        "alertRuleTemplateName": "c02f96b4-057b-4e63-87af-6376ef7a081b",
        "customDetails": null,
        "description": "'This rule triggers on multiple attack attemts triggered by same user.'\n",
        "displayName": "CyberArkEPM - Multiple attack types",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyberArkEPM/Analytic%20Rules/CyberArkEPMMultipleAttackAttempts.yaml",
        "query": "CyberArkEPM\n| where EventSubType =~ 'AttackAttempt'\n| summarize LatestAttackTime=max(EventEndTime), att=makeset(EventMessage) by ActorUsername\n| where array_length(att) > 1\n| extend AccountCustomEntity = ActorUsername\n",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution"
        ],
        "techniques": [
          "T1204"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}