T1531.Entra.HighlyPrivilegedRoleRemoval.json

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "workspace": {
            "type": "String"
        }
    },
    "resources": [
        {
            "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/cd96d5f2-b6ac-46ac-a87e-55954c0c4ea2')]",
            "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/cd96d5f2-b6ac-46ac-a87e-55954c0c4ea2')]",
            "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
            "kind": "Scheduled",
            "apiVersion": "2022-11-01-preview",
            "properties": {
                "displayName": "Privileged Entra Directory Roles unassigned from multiple accounts",
                "description": "Highly privileged Entra directory roles removed from multiple accounts.",
                "severity": "Medium",
                "enabled": true,
                "query": "let lookback = 2h;\nlet AdminRoleInfo = datatable (RoleId: guid, RoleDisplayName: string)[\n    '62e90394-69f5-4237-9190-012177145e10', 'Global Administrator',\n    'e8611ab8-c189-46e8-94e1-60213ab1f814', 'Privileged Role Administrator'\n];\nAuditLogs\n| where ingestion_time() > ago(lookback)\n| where AADOperationType in~ ('AdminRemovePermanentGrantedRole', 'AdminRemovePermanentEligibleRole')\n| mv-apply details = AdditionalDetails on (\n    where details.key == \"RoleDefinitionOriginId\"\n    | extend RoleId = toguid(details.value)\n    )\n| mv-apply details = AdditionalDetails on (\n    where details.key == \"ipaddr\"\n    | extend IPAddress = tostring(details.value)\n    )\n| lookup AdminRoleInfo on RoleId\n| mv-expand TargetResources\n| where TargetResources.type == 'User'\n| extend\n    UserObjectId = TargetResources.id,\n    UserPrincipalName = TargetResources.userPrincipalName\n| extend Actor = iif(isnotempty(InitiatedBy.user), InitiatedBy.user.id, InitiatedBy.app.appId)\n| project\n    ActivityDateTime,\n    ActivityDisplayName,\n    RoleDisplayName,\n    UserPrincipalName,\n    UserObjectId,\n    Actor,\n    IPAddress\n\n",
                "queryFrequency": "PT5M",
                "queryPeriod": "PT2H",
                "triggerOperator": "GreaterThan",
                "triggerThreshold": 2,
                "suppressionDuration": "PT5H",
                "suppressionEnabled": false,
                "startTimeUtc": null,
                "tactics": [
                    "Impact"
                ],
                "techniques": [
                    "T1531"
                ],
                "alertRuleTemplateName": null,
                "incidentConfiguration": {
                    "createIncident": true,
                    "groupingConfiguration": {
                        "enabled": true,
                        "reopenClosedIncident": false,
                        "lookbackDuration": "PT2H",
                        "matchingMethod": "Selected",
                        "groupByEntities": [
                            "Account"
                        ],
                        "groupByAlertDetails": [],
                        "groupByCustomDetails": [
                            "RoleDisplayName"
                        ]
                    }
                },
                "eventGroupingSettings": {
                    "aggregationKind": "SingleAlert"
                },
                "alertDetailsOverride": null,
                "customDetails": {
                    "RoleDisplayName": "RoleDisplayName"
                },
                "entityMappings": [
                    {
                        "entityType": "Account",
                        "fieldMappings": [
                            {
                                "identifier": "AadUserId",
                                "columnName": "UserObjectId"
                            }
                        ]
                    },
                    {
                        "entityType": "Account",
                        "fieldMappings": [
                            {
                                "identifier": "AadUserId",
                                "columnName": "Actor"
                            }
                        ]
                    },
                    {
                        "entityType": "IP",
                        "fieldMappings": [
                            {
                                "identifier": "Address",
                                "columnName": "IPAddress"
                            }
                        ]
                    }
                ],
                "sentinelEntitiesMappings": null,
                "templateVersion": null
            }
        }
    ]
}