Semperis DSP Operations Critical Notifications

SecurityEvent
| where EventSourceName == 'Semperis-DSP-Notifications' and EventID == 30001
| extend p1Xml = parse_xml(EventData).EventData.Data
| mv-expand bagexpansion=array p1Xml
| evaluate bag_unpack(p1Xml)
| extend Name=column_ifexists('@Name', ''), Value=column_ifexists('#text', '')
| evaluate pivot(Name, any(Value), TimeGenerated, EventSourceName, Channel, Computer, Level, EventLevelName, EventID, Task, Type, _ResourceId)
| parse column_ifexists('objectDN', '') with * "CN=" cnName "," *
| where "Critical" == column_ifexists('severity', "")
| extend changedBy = column_ifexists('changedBy', "")
| extend NTDomain = tostring(split(changedBy, '\\', 0)[0]), LoginUser = tostring(split(changedBy, '\\', 1)[0])
| extend HostName = tostring(split(Computer, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Computer, '.'), 1, -1), '.'))

queryFrequency: 30m
eventGroupingSettings:
  aggregationKind: SingleAlert
requiredDataConnectors:
- connectorId: SemperisDSP
  dataTypes:
  - dsp_parser
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/Semperis_DSP_Operations_Critical_Notifications_.yaml
query: |
  SecurityEvent
  | where EventSourceName == 'Semperis-DSP-Notifications' and EventID == 30001
  | extend p1Xml = parse_xml(EventData).EventData.Data
  | mv-expand bagexpansion=array p1Xml
  | evaluate bag_unpack(p1Xml)
  | extend Name=column_ifexists('@Name', ''), Value=column_ifexists('#text', '')
  | evaluate pivot(Name, any(Value), TimeGenerated, EventSourceName, Channel, Computer, Level, EventLevelName, EventID, Task, Type, _ResourceId)
  | parse column_ifexists('objectDN', '') with * "CN=" cnName "," *
  | where "Critical" == column_ifexists('severity', "")
  | extend changedBy = column_ifexists('changedBy', "")
  | extend NTDomain = tostring(split(changedBy, '\\', 0)[0]), LoginUser = tostring(split(changedBy, '\\', 1)[0])
  | extend HostName = tostring(split(Computer, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Computer, '.'), 1, -1), '.'))  
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: LoginUser
  - identifier: NTDomain
    columnName: NTDomain
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: DnsDomain
relevantTechniques:
- T1133
- T1110
- T1584
name: Semperis DSP Operations Critical Notifications
description: |
    'Alerts when there are critical notifications fired in the DSP system.'
severity: Medium
queryPeriod: 30m
alertDetailsOverride:
  alertDescriptionFormat: A critical notification was created in the DSP system.
  alertDisplayNameFormat: Critical Notification -- Alert from Semperis Directory Services Protector
triggerOperator: gt
kind: Scheduled
status: Available
tactics:
- InitialAccess
- CredentialAccess
- ResourceDevelopment
id: 8f471e21-3bb2-466f-9bc2-0a0326a60788
version: 2.0.7
triggerThreshold: 0

{
  "$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/8f471e21-3bb2-466f-9bc2-0a0326a60788')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/8f471e21-3bb2-466f-9bc2-0a0326a60788')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "A critical notification was created in the DSP system.",
          "alertDisplayNameFormat": "Critical Notification -- Alert from Semperis Directory Services Protector"
        },
        "alertRuleTemplateName": "8f471e21-3bb2-466f-9bc2-0a0326a60788",
        "customDetails": null,
        "description": "'Alerts when there are critical notifications fired in the DSP system.'\n",
        "displayName": "Semperis DSP Operations Critical Notifications",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "LoginUser",
                "identifier": "Name"
              },
              {
                "columnName": "NTDomain",
                "identifier": "NTDomain"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "DnsDomain",
                "identifier": "DnsDomain"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/Semperis_DSP_Operations_Critical_Notifications_.yaml",
        "query": "SecurityEvent\n| where EventSourceName == 'Semperis-DSP-Notifications' and EventID == 30001\n| extend p1Xml = parse_xml(EventData).EventData.Data\n| mv-expand bagexpansion=array p1Xml\n| evaluate bag_unpack(p1Xml)\n| extend Name=column_ifexists('@Name', ''), Value=column_ifexists('#text', '')\n| evaluate pivot(Name, any(Value), TimeGenerated, EventSourceName, Channel, Computer, Level, EventLevelName, EventID, Task, Type, _ResourceId)\n| parse column_ifexists('objectDN', '') with * \"CN=\" cnName \",\" *\n| where \"Critical\" == column_ifexists('severity', \"\")\n| extend changedBy = column_ifexists('changedBy', \"\")\n| extend NTDomain = tostring(split(changedBy, '\\\\', 0)[0]), LoginUser = tostring(split(changedBy, '\\\\', 1)[0])\n| extend HostName = tostring(split(Computer, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Computer, '.'), 1, -1), '.'))\n",
        "queryFrequency": "PT30M",
        "queryPeriod": "PT30M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess",
          "InitialAccess",
          "ResourceDevelopment"
        ],
        "techniques": [
          "T1110",
          "T1133",
          "T1584"
        ],
        "templateVersion": "2.0.7",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}