Semperis DSP Mimikatz's DCShadow Alert

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Id	1a6d0a49-64b3-4ca1-96c3-f154c16c218c
Rulename	Semperis DSP Mimikatz’s DCShadow Alert
Description	Mimikatz’s DCShadow switch allows a user who has compromised an AD domain, to inject arbitrary changes into AD using a “fake” domain controller. These changes bypass the security event log and can’t be spotted using normal AD tools. This rule looks for evidence that a machine has been used in this capacity.
Severity	High
Tactics	DefenseEvasion
Techniques	T1207
Required data connectors	SemperisDSP
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/SemperisDSP_EvidenceOfMimikatzDCShadowAttack.yaml
Version	1.0.0
Arm template	1a6d0a49-64b3-4ca1-96c3-f154c16c218c.json

KQL

dsp_parser
| where EventID == 9212
| where SecurityIndicatorName == "Evidence of Mimikatz DCShadow attack"

YAML

severity: High
queryFrequency: 1h
relevantTechniques:
- T1207
tactics:
- DefenseEvasion
kind: Scheduled
query: |
  dsp_parser
  | where EventID == 9212
  | where SecurityIndicatorName == "Evidence of Mimikatz DCShadow attack"  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/SemperisDSP_EvidenceOfMimikatzDCShadowAttack.yaml
queryPeriod: 1h
status: Available
version: 1.0.0
name: Semperis DSP Mimikatz's DCShadow Alert
requiredDataConnectors:
- dataTypes:
  - dsp_parser
  connectorId: SemperisDSP
triggerOperator: gt
id: 1a6d0a49-64b3-4ca1-96c3-f154c16c218c
description: |
    'Mimikatz's DCShadow switch allows a user who has compromised an AD domain, to inject arbitrary changes into AD using a "fake" domain controller. These changes bypass the security event log and can't be spotted using normal AD tools. This rule looks for evidence that a machine has been used in this capacity.'
triggerThreshold: 0

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/1a6d0a49-64b3-4ca1-96c3-f154c16c218c')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1a6d0a49-64b3-4ca1-96c3-f154c16c218c')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01-preview",
      "properties": {
        "displayName": "Semperis DSP Mimikatz's DCShadow Alert",
        "description": "'Mimikatz's DCShadow switch allows a user who has compromised an AD domain, to inject arbitrary changes into AD using a \"fake\" domain controller. These changes bypass the security event log and can't be spotted using normal AD tools. This rule looks for evidence that a machine has been used in this capacity.'\n",
        "severity": "High",
        "enabled": true,
        "query": "dsp_parser\n| where EventID == 9212\n| where SecurityIndicatorName == \"Evidence of Mimikatz DCShadow attack\"\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion"
        ],
        "techniques": [
          "T1207"
        ],
        "alertRuleTemplateName": "1a6d0a49-64b3-4ca1-96c3-f154c16c218c",
        "customDetails": null,
        "entityMappings": null,
        "templateVersion": "1.0.0",
        "status": "Available",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/SemperisDSP_EvidenceOfMimikatzDCShadowAttack.yaml"
      }
    }
  ]
}