Alsid Indicators of Exposures

let SeverityTable=datatable(Severity:string,Level:int) [
"low", 1,
"medium", 2,
"high", 3,
"critical", 4
];
afad_parser
| where MessageType == 0
| lookup kind=leftouter SeverityTable on Severity
| order by Level
| extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))

description: |
    'Searches for triggered Indicators of Exposures'
status: Available
queryPeriod: 2h
severity: Low
triggerOperator: gt
kind: Scheduled
triggerThreshold: 0
version: 1.0.1
name: Alsid Indicators of Exposures
queryFrequency: 2h
id: 154fde9f-ae00-4422-a8da-ef00b11da3fc
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Alsid For AD/Analytic Rules/IndicatorsOfExposures.yaml
entityMappings:
- fieldMappings:
  - columnName: HostName
    identifier: HostName
  - columnName: DnsDomain
    identifier: DnsDomain
  entityType: Host
relevantTechniques:
- T1110
tactics:
- CredentialAccess
requiredDataConnectors:
- dataTypes:
  - AlsidForADLog_CL
  connectorId: AlsidForAD
query: |
  let SeverityTable=datatable(Severity:string,Level:int) [
  "low", 1,
  "medium", 2,
  "high", 3,
  "critical", 4
  ];
  afad_parser
  | where MessageType == 0
  | lookup kind=leftouter SeverityTable on Severity
  | order by Level
  | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))  

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/154fde9f-ae00-4422-a8da-ef00b11da3fc')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/154fde9f-ae00-4422-a8da-ef00b11da3fc')]",
      "properties": {
        "alertRuleTemplateName": "154fde9f-ae00-4422-a8da-ef00b11da3fc",
        "customDetails": null,
        "description": "'Searches for triggered Indicators of Exposures'\n",
        "displayName": "Alsid Indicators of Exposures",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "DnsDomain",
                "identifier": "DnsDomain"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Alsid For AD/Analytic Rules/IndicatorsOfExposures.yaml",
        "query": "let SeverityTable=datatable(Severity:string,Level:int) [\n\"low\", 1,\n\"medium\", 2,\n\"high\", 3,\n\"critical\", 4\n];\nafad_parser\n| where MessageType == 0\n| lookup kind=leftouter SeverityTable on Severity\n| order by Level\n| extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))\n",
        "queryFrequency": "PT2H",
        "queryPeriod": "PT2H",
        "severity": "Low",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "techniques": [
          "T1110"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}