Microsoft Sentinel Analytic Rules
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Theom - Shadow DB with atypical accesses

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Id02bff937-ca52-4f52-a9cd-b826f8602694
RulenameTheom - Shadow DB with atypical accesses
Description“Creates Sentinel incidents for critical/high Theom risks, associated with ruleId TRIS0036 (Theom has observed shadow or clone databases/tables. Additionally, it has observed atypical accesses to these data stores. As per this requirement, use this information to apply data access control lists or access permissions and enforce data retention policies)”
SeverityHigh
TacticsCollection
PrivilegeEscalation
TechniquesT1560
T1530
T1078
Required data connectorsTheom
KindScheduled
Query frequency5m
Query period5m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Theom/Analytic Rules/TRIS0036_Shadow_DB_with_atypical_accesses.yaml
Version1.0.2
Arm template02bff937-ca52-4f52-a9cd-b826f8602694.json
Deploy To Azure
TheomAlerts_CL
  | where customProps_RuleId_s == "TRIS0036" and (priority_s == "P1" or priority_s == "P2")
name: Theom - Shadow DB with atypical accesses
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Theom/Analytic Rules/TRIS0036_Shadow_DB_with_atypical_accesses.yaml
queryPeriod: 5m
version: 1.0.2
severity: High
id: 02bff937-ca52-4f52-a9cd-b826f8602694
triggerOperator: gt
triggerThreshold: 0
kind: Scheduled
requiredDataConnectors:
- dataTypes:
  - TheomAlerts_CL
  connectorId: Theom
eventGroupingSettings:
  aggregationKind: AlertPerResult
relevantTechniques:
- T1560
- T1530
- T1078
description: |
    "Creates Sentinel incidents for critical/high Theom risks, associated with ruleId TRIS0036 (Theom has observed shadow or clone databases/tables. Additionally, it has observed atypical accesses to these data stores. As per this requirement, use this information to apply data access control lists or access permissions and enforce data retention policies)"
alertDetailsOverride:
  alertDescriptionFormat: |2

    Summary: {{summary_s}}  
    Additional info: {{details_s}}
    Please investigate further on Theom UI at {{deepLink_s}}
  alertDisplayNameFormat: 'Theom Alert ID: {{id_s}} '
query: |
  TheomAlerts_CL
    | where customProps_RuleId_s == "TRIS0036" and (priority_s == "P1" or priority_s == "P2")  
tactics:
- Collection
- PrivilegeEscalation
entityMappings:
- entityType: CloudApplication
  fieldMappings:
  - columnName: customProps_AssetName_s
    identifier: Name
- entityType: URL
  fieldMappings:
  - columnName: deepLink_s
    identifier: Url
status: Available
queryFrequency: 5m
{
  "$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/02bff937-ca52-4f52-a9cd-b826f8602694')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/02bff937-ca52-4f52-a9cd-b826f8602694')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "\nSummary: {{summary_s}}  \nAdditional info: {{details_s}}\nPlease investigate further on Theom UI at {{deepLink_s}}\n",
          "alertDisplayNameFormat": "Theom Alert ID: {{id_s}} "
        },
        "alertRuleTemplateName": "02bff937-ca52-4f52-a9cd-b826f8602694",
        "customDetails": null,
        "description": "\"Creates Sentinel incidents for critical/high Theom risks, associated with ruleId TRIS0036 (Theom has observed shadow or clone databases/tables. Additionally, it has observed atypical accesses to these data stores. As per this requirement, use this information to apply data access control lists or access permissions and enforce data retention policies)\"\n",
        "displayName": "Theom - Shadow DB with atypical accesses",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "customProps_AssetName_s",
                "identifier": "Name"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "deepLink_s",
                "identifier": "Url"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Theom/Analytic Rules/TRIS0036_Shadow_DB_with_atypical_accesses.yaml",
        "query": "TheomAlerts_CL\n  | where customProps_RuleId_s == \"TRIS0036\" and (priority_s == \"P1\" or priority_s == \"P2\")\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Collection",
          "PrivilegeEscalation"
        ],
        "techniques": [
          "T1078",
          "T1530",
          "T1560"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}