Insider Risk_High User Security Incidents Correlation | Microsoft Sentinel Analytic Rules

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Id	28a75d10-9b75-4192-9863-e452c3ad24db
Rulename	Insider Risk_High User Security Incidents Correlation
Description	This alert joins SecurityAlerts to SecurityIncidents to associate Security Alerts and Incidents with user accounts. This aligns all Microsoft Alerting Products with Microsoft Incident Generating Products (Microsoft Sentinel, M365 Defender) for a count of user security incidents over time. The default threshold is 5 security incidents, and this is customizable per the organization’s requirements. Results include UserPrincipalName (UPN), SecurityIncident, LastIncident, ProductName, LastObservedTime, and Previous Incidents. There is an option for configuration of correlations against Microsoft Sentinel watchlists. For more information, see Investigate incidents with Microsoft Sentinel.
Severity	High
Tactics	Execution
Techniques	T1204
Required data connectors	AzureActiveDirectoryIdentityProtection AzureSecurityCenter IoT MicrosoftCloudAppSecurity MicrosoftDefenderAdvancedThreatProtection OfficeATP
Kind	Scheduled
Query frequency	7d
Query period	7d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MicrosoftPurviewInsiderRiskManagement/Analytic%20Rules/InsiderRiskHighUserIncidentsCorrelation.yaml
Version	1.1.2
Arm template	28a75d10-9b75-4192-9863-e452c3ad24db.json

KQL

let PreviousIncidents =
SecurityIncident
| summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber
| mv-expand AlertIds
| extend AlertId = tostring(AlertIds)
| join kind= innerunique ( 
          SecurityAlert 
          )
          on $left.AlertId == $right.SystemAlertId
| summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId
| mv-expand todynamic(Entities)
| where Entities["Type"] =~ "account"
| extend Name = tostring(tolower(Entities["Name"])), NTDomain = tostring(Entities["NTDomain"]), UPNSuffix = tostring(Entities["UPNSuffix"]), AadUserId = tostring(Entities["AadUserId"]), AadTenantId = tostring(Entities["AadTenantId"]), 
          Sid = tostring(Entities["Sid"]), IsDomainJoined = tobool(Entities["IsDomainJoined"]), Host = tostring(Entities["Host"])
| extend UPN = iff(Name != "" and UPNSuffix != "", strcat(Name, "@", UPNSuffix), "")
| extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)
| where UPN <> ""
| summarize PreviousIncidents = make_set(IncidentNumber) by UPN;
let LastTimeObserved =
SecurityIncident
| summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber
| mv-expand AlertIds
| extend AlertId = tostring(AlertIds)
| join kind= innerunique ( 
          SecurityAlert 
          )
          on $left.AlertId == $right.SystemAlertId
| summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId
| mv-expand todynamic(Entities)
| where Entities["Type"] =~ "account"
| extend Name = tostring(tolower(Entities["Name"])), NTDomain = tostring(Entities["NTDomain"]), UPNSuffix = tostring(Entities["UPNSuffix"]), AadUserId = tostring(Entities["AadUserId"]), AadTenantId = tostring(Entities["AadTenantId"]), 
          Sid = tostring(Entities["Sid"]), IsDomainJoined = tobool(Entities["IsDomainJoined"]), Host = tostring(Entities["Host"])
| extend UPN = iff(Name != "" and UPNSuffix != "", strcat(Name, "@", UPNSuffix), "")
| extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)
| where UPN <> ""
| summarize arg_max(TimeGenerated, IncidentName) by UPN;
  SecurityIncident
| summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber
| mv-expand AlertIds
| extend AlertId = tostring(AlertIds)
| join kind= innerunique ( 
          SecurityAlert 
          )
          on $left.AlertId == $right.SystemAlertId
| summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId
| mv-expand todynamic(Entities)
| where Entities["Type"] =~ "account"
| extend Name = tostring(tolower(Entities["Name"])), NTDomain = tostring(Entities["NTDomain"]), UPNSuffix = tostring(Entities["UPNSuffix"]), AadUserId = tostring(Entities["AadUserId"]), AadTenantId = tostring(Entities["AadTenantId"]), 
          Sid = tostring(Entities["Sid"]), IsDomainJoined = tobool(Entities["IsDomainJoined"]), Host = tostring(Entities["Host"])
| extend UPN = iff(Name != "" and UPNSuffix != "", strcat(Name, "@", UPNSuffix), "")
| extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)
| where UPN <> ""
| summarize count() by UPN, IncidentName, IncidentNumber, IncidentUrl, Severity, ProductName
| extend SecurityIncidents = count_
| where SecurityIncidents > 5 //Adjust & Tune within Organzational Requirements
| join (LastTimeObserved) on UPN
| project-rename LastObserved = TimeGenerated, LastIncident = IncidentNumber
| project-away IncidentName, count_, UPN1, IncidentName1, Severity, IncidentUrl
| join kind=inner (PreviousIncidents) on UPN
// | lookup kind=inner _GetWatchlist('<Your Watchlist Name>') on $left.UPN == $right.SearchKey
| project UPN, SecurityIncidents, LastIncident, ProductName, LastObserved, PreviousIncidents
| sort by SecurityIncidents desc
| extend AccountName = tostring(split(UPN, "@")[0]), AccountUPNSuffix = tostring(split(UPN, "@")[1])

YAML

entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: UPN
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: AccountUPNSuffix
  entityType: Account
id: 28a75d10-9b75-4192-9863-e452c3ad24db
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MicrosoftPurviewInsiderRiskManagement/Analytic%20Rules/InsiderRiskHighUserIncidentsCorrelation.yaml
tactics:
- Execution
kind: Scheduled
requiredDataConnectors:
- dataTypes:
  - SecurityAlert (MDATP)
  connectorId: MicrosoftDefenderAdvancedThreatProtection
- dataTypes:
  - SecurityAlert (IPC)
  connectorId: AzureActiveDirectoryIdentityProtection
- dataTypes:
  - SecurityAlert (ASC)
  connectorId: AzureSecurityCenter
- dataTypes:
  - SecurityAlert (ASC for IoT)
  connectorId: IoT
- dataTypes:
  - SecurityAlert (ASC for IoT)
  connectorId: MicrosoftCloudAppSecurity
- dataTypes:
  - SecurityAlert (MCAS)
  connectorId: IoT
- dataTypes:
  - SecurityAlert (Office 365)
  connectorId: OfficeATP
queryPeriod: 7d
eventGroupingSettings:
  aggregationKind: SingleAlert
severity: High
relevantTechniques:
- T1204
triggerThreshold: 0
version: 1.1.2
name: Insider Risk_High User Security Incidents Correlation
triggerOperator: gt
query: |
  let PreviousIncidents =
  SecurityIncident
  | summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber
  | mv-expand AlertIds
  | extend AlertId = tostring(AlertIds)
  | join kind= innerunique ( 
            SecurityAlert 
            )
            on $left.AlertId == $right.SystemAlertId
  | summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId
  | mv-expand todynamic(Entities)
  | where Entities["Type"] =~ "account"
  | extend Name = tostring(tolower(Entities["Name"])), NTDomain = tostring(Entities["NTDomain"]), UPNSuffix = tostring(Entities["UPNSuffix"]), AadUserId = tostring(Entities["AadUserId"]), AadTenantId = tostring(Entities["AadTenantId"]), 
            Sid = tostring(Entities["Sid"]), IsDomainJoined = tobool(Entities["IsDomainJoined"]), Host = tostring(Entities["Host"])
  | extend UPN = iff(Name != "" and UPNSuffix != "", strcat(Name, "@", UPNSuffix), "")
  | extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)
  | where UPN <> ""
  | summarize PreviousIncidents = make_set(IncidentNumber) by UPN;
  let LastTimeObserved =
  SecurityIncident
  | summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber
  | mv-expand AlertIds
  | extend AlertId = tostring(AlertIds)
  | join kind= innerunique ( 
            SecurityAlert 
            )
            on $left.AlertId == $right.SystemAlertId
  | summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId
  | mv-expand todynamic(Entities)
  | where Entities["Type"] =~ "account"
  | extend Name = tostring(tolower(Entities["Name"])), NTDomain = tostring(Entities["NTDomain"]), UPNSuffix = tostring(Entities["UPNSuffix"]), AadUserId = tostring(Entities["AadUserId"]), AadTenantId = tostring(Entities["AadTenantId"]), 
            Sid = tostring(Entities["Sid"]), IsDomainJoined = tobool(Entities["IsDomainJoined"]), Host = tostring(Entities["Host"])
  | extend UPN = iff(Name != "" and UPNSuffix != "", strcat(Name, "@", UPNSuffix), "")
  | extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)
  | where UPN <> ""
  | summarize arg_max(TimeGenerated, IncidentName) by UPN;
    SecurityIncident
  | summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber
  | mv-expand AlertIds
  | extend AlertId = tostring(AlertIds)
  | join kind= innerunique ( 
            SecurityAlert 
            )
            on $left.AlertId == $right.SystemAlertId
  | summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId
  | mv-expand todynamic(Entities)
  | where Entities["Type"] =~ "account"
  | extend Name = tostring(tolower(Entities["Name"])), NTDomain = tostring(Entities["NTDomain"]), UPNSuffix = tostring(Entities["UPNSuffix"]), AadUserId = tostring(Entities["AadUserId"]), AadTenantId = tostring(Entities["AadTenantId"]), 
            Sid = tostring(Entities["Sid"]), IsDomainJoined = tobool(Entities["IsDomainJoined"]), Host = tostring(Entities["Host"])
  | extend UPN = iff(Name != "" and UPNSuffix != "", strcat(Name, "@", UPNSuffix), "")
  | extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)
  | where UPN <> ""
  | summarize count() by UPN, IncidentName, IncidentNumber, IncidentUrl, Severity, ProductName
  | extend SecurityIncidents = count_
  | where SecurityIncidents > 5 //Adjust & Tune within Organzational Requirements
  | join (LastTimeObserved) on UPN
  | project-rename LastObserved = TimeGenerated, LastIncident = IncidentNumber
  | project-away IncidentName, count_, UPN1, IncidentName1, Severity, IncidentUrl
  | join kind=inner (PreviousIncidents) on UPN
  // | lookup kind=inner _GetWatchlist('<Your Watchlist Name>') on $left.UPN == $right.SearchKey
  | project UPN, SecurityIncidents, LastIncident, ProductName, LastObserved, PreviousIncidents
  | sort by SecurityIncidents desc
  | extend AccountName = tostring(split(UPN, "@")[0]), AccountUPNSuffix = tostring(split(UPN, "@")[1])
description: |
  'This alert joins SecurityAlerts to SecurityIncidents to associate Security Alerts and Incidents with user accounts. This aligns all Microsoft Alerting Products with Microsoft Incident Generating Products (Microsoft Sentinel, M365 Defender) for a count of user security incidents over time. The default threshold is 5 security incidents, and this is customizable per the organization's requirements. Results include UserPrincipalName (UPN), SecurityIncident, LastIncident, ProductName, LastObservedTime, and Previous Incidents. There is an option for configuration of correlations against Microsoft Sentinel watchlists. For more information, see [Investigate incidents with Microsoft Sentinel]( https://docs.microsoft.com/azure/sentinel/investigate-cases).'
queryFrequency: 7d
incidentConfiguration:
  groupingConfiguration:
    enabled: true
    lookbackDuration: 3d
    reopenClosedIncident: true
    groupByEntities:
    - Account
    matchingMethod: Selected
  createIncident: true

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/28a75d10-9b75-4192-9863-e452c3ad24db')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/28a75d10-9b75-4192-9863-e452c3ad24db')]",
      "properties": {
        "alertRuleTemplateName": "28a75d10-9b75-4192-9863-e452c3ad24db",
        "customDetails": null,
        "description": "'This alert joins SecurityAlerts to SecurityIncidents to associate Security Alerts and Incidents with user accounts. This aligns all Microsoft Alerting Products with Microsoft Incident Generating Products (Microsoft Sentinel, M365 Defender) for a count of user security incidents over time. The default threshold is 5 security incidents, and this is customizable per the organization's requirements. Results include UserPrincipalName (UPN), SecurityIncident, LastIncident, ProductName, LastObservedTime, and Previous Incidents. There is an option for configuration of correlations against Microsoft Sentinel watchlists. For more information, see [Investigate incidents with Microsoft Sentinel]( https://docs.microsoft.com/azure/sentinel/investigate-cases).'\n",
        "displayName": "Insider Risk_High User Security Incidents Correlation",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "UPN",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountUPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByEntities": [
              "Account"
            ],
            "lookbackDuration": "P3D",
            "matchingMethod": "Selected",
            "reopenClosedIncident": true
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MicrosoftPurviewInsiderRiskManagement/Analytic%20Rules/InsiderRiskHighUserIncidentsCorrelation.yaml",
        "query": "let PreviousIncidents =\nSecurityIncident\n| summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber\n| mv-expand AlertIds\n| extend AlertId = tostring(AlertIds)\n| join kind= innerunique ( \n          SecurityAlert \n          )\n          on $left.AlertId == $right.SystemAlertId\n| summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId\n| mv-expand todynamic(Entities)\n| where Entities[\"Type\"] =~ \"account\"\n| extend Name = tostring(tolower(Entities[\"Name\"])), NTDomain = tostring(Entities[\"NTDomain\"]), UPNSuffix = tostring(Entities[\"UPNSuffix\"]), AadUserId = tostring(Entities[\"AadUserId\"]), AadTenantId = tostring(Entities[\"AadTenantId\"]), \n          Sid = tostring(Entities[\"Sid\"]), IsDomainJoined = tobool(Entities[\"IsDomainJoined\"]), Host = tostring(Entities[\"Host\"])\n| extend UPN = iff(Name != \"\" and UPNSuffix != \"\", strcat(Name, \"@\", UPNSuffix), \"\")\n| extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)\n| where UPN <> \"\"\n| summarize PreviousIncidents = make_set(IncidentNumber) by UPN;\nlet LastTimeObserved =\nSecurityIncident\n| summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber\n| mv-expand AlertIds\n| extend AlertId = tostring(AlertIds)\n| join kind= innerunique ( \n          SecurityAlert \n          )\n          on $left.AlertId == $right.SystemAlertId\n| summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId\n| mv-expand todynamic(Entities)\n| where Entities[\"Type\"] =~ \"account\"\n| extend Name = tostring(tolower(Entities[\"Name\"])), NTDomain = tostring(Entities[\"NTDomain\"]), UPNSuffix = tostring(Entities[\"UPNSuffix\"]), AadUserId = tostring(Entities[\"AadUserId\"]), AadTenantId = tostring(Entities[\"AadTenantId\"]), \n          Sid = tostring(Entities[\"Sid\"]), IsDomainJoined = tobool(Entities[\"IsDomainJoined\"]), Host = tostring(Entities[\"Host\"])\n| extend UPN = iff(Name != \"\" and UPNSuffix != \"\", strcat(Name, \"@\", UPNSuffix), \"\")\n| extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)\n| where UPN <> \"\"\n| summarize arg_max(TimeGenerated, IncidentName) by UPN;\n  SecurityIncident\n| summarize hint.strategy = shuffle arg_max(LastModifiedTime, *) by IncidentNumber\n| mv-expand AlertIds\n| extend AlertId = tostring(AlertIds)\n| join kind= innerunique ( \n          SecurityAlert \n          )\n          on $left.AlertId == $right.SystemAlertId\n| summarize hint.strategy = shuffle arg_max(TimeGenerated, *), NumberOfUpdates = count() by SystemAlertId\n| mv-expand todynamic(Entities)\n| where Entities[\"Type\"] =~ \"account\"\n| extend Name = tostring(tolower(Entities[\"Name\"])), NTDomain = tostring(Entities[\"NTDomain\"]), UPNSuffix = tostring(Entities[\"UPNSuffix\"]), AadUserId = tostring(Entities[\"AadUserId\"]), AadTenantId = tostring(Entities[\"AadTenantId\"]), \n          Sid = tostring(Entities[\"Sid\"]), IsDomainJoined = tobool(Entities[\"IsDomainJoined\"]), Host = tostring(Entities[\"Host\"])\n| extend UPN = iff(Name != \"\" and UPNSuffix != \"\", strcat(Name, \"@\", UPNSuffix), \"\")\n| extend Href_ = tostring(parse_json(ExtendedLinks)[0].Href)\n| where UPN <> \"\"\n| summarize count() by UPN, IncidentName, IncidentNumber, IncidentUrl, Severity, ProductName\n| extend SecurityIncidents = count_\n| where SecurityIncidents > 5 //Adjust & Tune within Organzational Requirements\n| join (LastTimeObserved) on UPN\n| project-rename LastObserved = TimeGenerated, LastIncident = IncidentNumber\n| project-away IncidentName, count_, UPN1, IncidentName1, Severity, IncidentUrl\n| join kind=inner (PreviousIncidents) on UPN\n// | lookup kind=inner _GetWatchlist('<Your Watchlist Name>') on $left.UPN == $right.SearchKey\n| project UPN, SecurityIncidents, LastIncident, ProductName, LastObserved, PreviousIncidents\n| sort by SecurityIncidents desc\n| extend AccountName = tostring(split(UPN, \"@\")[0]), AccountUPNSuffix = tostring(split(UPN, \"@\")[1])\n",
        "queryFrequency": "P7D",
        "queryPeriod": "P7D",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution"
        ],
        "techniques": [
          "T1204"
        ],
        "templateVersion": "1.1.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}