Semperis DSP Failed Logons

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Id	0e105444-fe13-4ce6-9239-21880076a3f9
Rulename	Semperis DSP Failed Logons
Description	Alerts when there are failed logons in the DSP system.
Severity	Medium
Tactics	InitialAccess CredentialAccess
Techniques	T1078 T1110
Required data connectors	SemperisDSP
Kind	Scheduled
Query frequency	30m
Query period	30m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/Semperis_DSP_Failed_Logons.yaml
Version	2.0.7
Arm template	0e105444-fe13-4ce6-9239-21880076a3f9.json

KQL

SecurityEvent
| where EventSourceName == 'Semperis-Operation-Log' and EventID == 20002
| sort by TimeGenerated desc 
| 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)
| extend det = column_ifexists('details', '')
| parse det with * "Trustee Name: " TrusteeName " Correlation ID: " * " Source: " HostIP "WebSite Target" *
| extend host = tostring(HostIP)
| extend HostIP = trim_end(":", HostIP)
| project TimeGenerated, TrusteeName, HostIP, _ResourceId
| extend NTDomain = tostring(split(TrusteeName, '\\', 0)[0]), Name = tostring(split(TrusteeName, '\\', 1)[0])

YAML

queryFrequency: 30m
status: Available
requiredDataConnectors:
- connectorId: SemperisDSP
  dataTypes:
  - dsp_parser
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/Semperis_DSP_Failed_Logons.yaml
query: |
  SecurityEvent
  | where EventSourceName == 'Semperis-Operation-Log' and EventID == 20002
  | sort by TimeGenerated desc 
  | 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)
  | extend det = column_ifexists('details', '')
  | parse det with * "Trustee Name: " TrusteeName " Correlation ID: " * " Source: " HostIP "WebSite Target" *
  | extend host = tostring(HostIP)
  | extend HostIP = trim_end(":", HostIP)
  | project TimeGenerated, TrusteeName, HostIP, _ResourceId
  | extend NTDomain = tostring(split(TrusteeName, '\\', 0)[0]), Name = tostring(split(TrusteeName, '\\', 1)[0])   
entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: HostIP
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: Name
  - identifier: NTDomain
    columnName: NTDomain
relevantTechniques:
- T1078
- T1110
name: Semperis DSP Failed Logons
tactics:
- InitialAccess
- CredentialAccess
severity: Medium
description: |
    'Alerts when there are failed logons in the DSP system.'
alertDetailsOverride:
  alertDescriptionFormat: A failed logon was detected to the DSP system.
  alertDisplayNameFormat: Failed Logon -- Alert from Semperis Directory Services Protector
triggerOperator: gt
kind: Scheduled
queryPeriod: 30m
eventGroupingSettings:
  aggregationKind: SingleAlert
id: 0e105444-fe13-4ce6-9239-21880076a3f9
version: 2.0.7
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": [
    {
      "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": "SecurityEvent\n| where EventSourceName == 'Semperis-Operation-Log' and EventID == 20002\n| sort by TimeGenerated desc \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| extend det = column_ifexists('details', '')\n| parse det with * \"Trustee Name: \" TrusteeName \" Correlation ID: \" * \" Source: \" HostIP \"WebSite Target\" *\n| extend host = tostring(HostIP)\n| extend HostIP = trim_end(\":\", HostIP)\n| project TimeGenerated, TrusteeName, HostIP, _ResourceId\n| extend NTDomain = tostring(split(TrusteeName, '\\\\', 0)[0]), Name = tostring(split(TrusteeName, '\\\\', 1)[0]) \n",
        "queryFrequency": "PT30M",
        "queryPeriod": "PT30M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess",
          "InitialAccess"
        ],
        "techniques": [
          "T1078",
          "T1110"
        ],
        "templateVersion": "2.0.7",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}