Insider Risk_High User Security Incidents Correlation
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 Rules/InsiderRiskHighUserIncidentsCorrelation.yaml |
Version | 1.1.2 |
Arm template | 28a75d10-9b75-4192-9863-e452c3ad24db.json |
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])
id: 28a75d10-9b75-4192-9863-e452c3ad24db
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])
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MicrosoftPurviewInsiderRiskManagement/Analytic Rules/InsiderRiskHighUserIncidentsCorrelation.yaml
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).'
name: Insider Risk_High User Security Incidents Correlation
incidentConfiguration:
groupingConfiguration:
matchingMethod: Selected
groupByEntities:
- Account
enabled: true
reopenClosedIncident: true
lookbackDuration: 3d
createIncident: true
relevantTechniques:
- T1204
entityMappings:
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: UPN
- identifier: Name
columnName: AccountName
- identifier: UPNSuffix
columnName: AccountUPNSuffix
triggerThreshold: 0
severity: High
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
eventGroupingSettings:
aggregationKind: SingleAlert
queryFrequency: 7d
queryPeriod: 7d
version: 1.1.2
kind: Scheduled
tactics:
- Execution
triggerOperator: gt
{
"$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 Rules/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"
}
]
}