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

kind: Scheduled
eventGroupingSettings:
  aggregationKind: SingleAlert
alertDetailsOverride:
  alertDisplayNameFormat: Failed Logon -- Alert from Semperis Directory Services Protector
  alertDescriptionFormat: A failed logon was detected to the DSP system.
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: HostIP
    identifier: Address
- entityType: Account
  fieldMappings:
  - columnName: Name
    identifier: Name
  - columnName: NTDomain
    identifier: NTDomain
description: |
    'Alerts when there are failed logons in the DSP system.'
severity: Medium
queryFrequency: 30m
triggerThreshold: 0
relevantTechniques:
- T1078
- T1110
status: Available
tactics:
- InitialAccess
- CredentialAccess
name: Semperis DSP Failed Logons
id: 0e105444-fe13-4ce6-9239-21880076a3f9
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])   
requiredDataConnectors:
- dataTypes:
  - dsp_parser
  connectorId: SemperisDSP
version: 2.0.7
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Semperis Directory Services Protector/Analytic Rules/Semperis_DSP_Failed_Logons.yaml
queryPeriod: 30m

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"
    }
  ]
}