Microsoft Sentinel Analytic Rules
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CyberArkEPM - Possible execution of Powershell Empire

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Ideddfd1fd-71df-4cc3-b050-287643bee398
RulenameCyberArkEPM - Possible execution of Powershell Empire
DescriptionDetects possible execution of Powershell Empire.
SeverityHigh
TacticsExecution
TechniquesT1204
Required data connectorsCyberArkEPM
KindScheduled
Query frequency10m
Query period10m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyberArkEPM/Analytic Rules/CyberArkEPMPossibleExecutionOfPowershellEmpire.yaml
Version1.0.0
Arm templateeddfd1fd-71df-4cc3-b050-287643bee398.json
Deploy To Azure
CyberArkEPM
| where EventSubType != 'AttackAttempt'
| where ActingProcessCommandLine has_any ('-NoP -sta -NonI -W Hidden -Enc', '-noP -sta -w 1 -enc', '-NoP -NonI -W Hidden -enc')
| extend AccountCustomEntity = ActorUsername
relevantTechniques:
- T1204
name: CyberArkEPM - Possible execution of Powershell Empire
requiredDataConnectors:
- dataTypes:
  - CyberArkEPM
  connectorId: CyberArkEPM
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
  entityType: Account
triggerThreshold: 0
id: eddfd1fd-71df-4cc3-b050-287643bee398
tactics:
- Execution
version: 1.0.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyberArkEPM/Analytic Rules/CyberArkEPMPossibleExecutionOfPowershellEmpire.yaml
queryPeriod: 10m
kind: Scheduled
queryFrequency: 10m
severity: High
description: |
    'Detects possible execution of Powershell Empire.'
query: |
  CyberArkEPM
  | where EventSubType != 'AttackAttempt'
  | where ActingProcessCommandLine has_any ('-NoP -sta -NonI -W Hidden -Enc', '-noP -sta -w 1 -enc', '-NoP -NonI -W Hidden -enc')
  | extend AccountCustomEntity = ActorUsername  
triggerOperator: gt
{
  "$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/eddfd1fd-71df-4cc3-b050-287643bee398')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/eddfd1fd-71df-4cc3-b050-287643bee398')]",
      "properties": {
        "alertRuleTemplateName": "eddfd1fd-71df-4cc3-b050-287643bee398",
        "customDetails": null,
        "description": "'Detects possible execution of Powershell Empire.'\n",
        "displayName": "CyberArkEPM - Possible execution of Powershell Empire",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CyberArkEPM/Analytic Rules/CyberArkEPMPossibleExecutionOfPowershellEmpire.yaml",
        "query": "CyberArkEPM\n| where EventSubType != 'AttackAttempt'\n| where ActingProcessCommandLine has_any ('-NoP -sta -NonI -W Hidden -Enc', '-noP -sta -w 1 -enc', '-NoP -NonI -W Hidden -enc')\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"
    }
  ]
}