Semperis DSP Failed Logons

Event
| where Source == 'Semperis-Operation-Log' and EventID == 20002
| sort by TimeGenerated desc 
| parse RenderedDescription with "Operation: " Operation "Access Granted:" AccessGranted "Result: " Result "Details: " * "Trustee Name: " TrusteeName " Correlation ID: " * " Source: " HostIP "WebSite Target" *
| extend host = tostring(HostIP)
| extend HostIP = trim_end(":", HostIP)
| project TimeGenerated, UserName, HostIP, _ResourceId
| extend NTDomain = tostring(split(UserName, '\\', 0)[0]), Name = tostring(split(UserName, '\\', 1)[0]) 

description: |
    'Alerts when there are failed logons in the DSP system.'
version: 1.1.1
tactics:
- InitialAccess
- CredentialAccess
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: HostIP
    identifier: Address
- entityType: Account
  fieldMappings:
  - columnName: Name
    identifier: Name
  - columnName: NTDomain
    identifier: NTDomain
queryFrequency: 30m
triggerThreshold: 0
query: |
  Event
  | where Source == 'Semperis-Operation-Log' and EventID == 20002
  | sort by TimeGenerated desc 
  | parse RenderedDescription with "Operation: " Operation "Access Granted:" AccessGranted "Result: " Result "Details: " * "Trustee Name: " TrusteeName " Correlation ID: " * " Source: " HostIP "WebSite Target" *
  | extend host = tostring(HostIP)
  | extend HostIP = trim_end(":", HostIP)
  | project TimeGenerated, UserName, HostIP, _ResourceId
  | extend NTDomain = tostring(split(UserName, '\\', 0)[0]), Name = tostring(split(UserName, '\\', 1)[0])   
triggerOperator: gt
status: Available
relevantTechniques:
- T1078
- T1110
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/Semperis_DSP_Failed_Logons.yaml
alertDetailsOverride:
  alertDescriptionFormat: A failed logon was detected to the DSP system.
  alertDisplayNameFormat: Failed Logon -- Alert from Semperis Directory Services Protector
queryPeriod: 30m
id: 0e105444-fe13-4ce6-9239-21880076a3f9
name: Semperis DSP Failed Logons
kind: Scheduled
requiredDataConnectors:
- connectorId: SemperisDSP
  dataTypes:
  - dsp_parser
severity: Medium
eventGroupingSettings:
  aggregationKind: SingleAlert

{
  "$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/0e105444-fe13-4ce6-9239-21880076a3f9')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/0e105444-fe13-4ce6-9239-21880076a3f9')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "A failed logon was detected to the DSP system.",
          "alertDisplayNameFormat": "Failed Logon -- Alert from Semperis Directory Services Protector"
        },
        "alertRuleTemplateName": "0e105444-fe13-4ce6-9239-21880076a3f9",
        "customDetails": null,
        "description": "'Alerts when there are failed logons in the DSP system.'\n",
        "displayName": "Semperis DSP Failed Logons",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "HostIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "Name",
                "identifier": "Name"
              },
              {
                "columnName": "NTDomain",
                "identifier": "NTDomain"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/Semperis_DSP_Failed_Logons.yaml",
        "query": "Event\n| where Source == 'Semperis-Operation-Log' and EventID == 20002\n| sort by TimeGenerated desc \n| parse RenderedDescription with \"Operation: \" Operation \"Access Granted:\" AccessGranted \"Result: \" Result \"Details: \" * \"Trustee Name: \" TrusteeName \" Correlation ID: \" * \" Source: \" HostIP \"WebSite Target\" *\n| extend host = tostring(HostIP)\n| extend HostIP = trim_end(\":\", HostIP)\n| project TimeGenerated, UserName, HostIP, _ResourceId\n| extend NTDomain = tostring(split(UserName, '\\\\', 0)[0]), Name = tostring(split(UserName, '\\\\', 1)[0]) \n",
        "queryFrequency": "PT30M",
        "queryPeriod": "PT30M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess",
          "InitialAccess"
        ],
        "techniques": [
          "T1078",
          "T1110"
        ],
        "templateVersion": "1.1.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}