Microsoft Entra ID PowerShell accessing non-Entra ID resources

Back


Id	50574fac-f8d1-4395-81c7-78a463ff0c52
Rulename	Microsoft Entra ID PowerShell accessing non-Entra ID resources
Description	This will alert when a user or application signs in using Microsoft Entra ID PowerShell to access non-Active Directory resources, such as the Azure Key Vault, which may be undesired or unauthorized behavior. For capabilities and expected behavior of the Microsoft Entra ID PowerShell module, see: https://docs.microsoft.com/powershell/module/azuread/?view=azureadps-2.0. For further information on Microsoft Entra ID Signin activity reports, see: https://docs.microsoft.com/azure/active-directory/reports-monitoring/concept-sign-ins.
Severity	Low
Tactics	InitialAccess
Techniques	T1078
Required data connectors	AzureActiveDirectory
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/AzureAADPowerShellAnomaly.yaml
Version	1.0.4
Arm template	50574fac-f8d1-4395-81c7-78a463ff0c52.json

KQL

let aadFunc = (tableName:string){
table(tableName)
| where AppId =~ "1b730954-1685-4b74-9bfd-dac224a7b894" // AppDisplayName IS Azure Active Directory PowerShell
| where TokenIssuerType =~ "AzureAD"
| where ResourceIdentity !in ("00000002-0000-0000-c000-000000000000", "00000003-0000-0000-c000-000000000000") // ResourceDisplayName IS NOT Windows Azure Active Directory OR Microsoft Graph
| extend Status = todynamic(Status)
| where Status.errorCode == 0 // Success
| project-reorder IPAddress, UserAgent, ResourceDisplayName, UserDisplayName, UserId, UserPrincipalName, Type
| order by TimeGenerated desc
| extend Name = tostring(split(UserPrincipalName,'@',0)[0]), UPNSuffix = tostring(split(UserPrincipalName,'@',1)[0])
};
let aadSignin = aadFunc("SigninLogs");
let aadNonInt = aadFunc("AADNonInteractiveUserSignInLogs");
union isfuzzy=true aadSignin, aadNonInt

YAML

relevantTechniques:
- T1078
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/AzureAADPowerShellAnomaly.yaml
triggerOperator: gt
kind: Scheduled
entityMappings:
- fieldMappings:
  - columnName: UserPrincipalName
    identifier: FullName
  - columnName: Name
    identifier: Name
  - columnName: UPNSuffix
    identifier: UPNSuffix
  entityType: Account
- fieldMappings:
  - columnName: UserId
    identifier: AadUserId
  entityType: Account
- fieldMappings:
  - columnName: IPAddress
    identifier: Address
  entityType: IP
requiredDataConnectors:
- dataTypes:
  - SigninLogs
  connectorId: AzureActiveDirectory
- dataTypes:
  - AADNonInteractiveUserSignInLogs
  connectorId: AzureActiveDirectory
queryPeriod: 1h
query: |
  let aadFunc = (tableName:string){
  table(tableName)
  | where AppId =~ "1b730954-1685-4b74-9bfd-dac224a7b894" // AppDisplayName IS Azure Active Directory PowerShell
  | where TokenIssuerType =~ "AzureAD"
  | where ResourceIdentity !in ("00000002-0000-0000-c000-000000000000", "00000003-0000-0000-c000-000000000000") // ResourceDisplayName IS NOT Windows Azure Active Directory OR Microsoft Graph
  | extend Status = todynamic(Status)
  | where Status.errorCode == 0 // Success
  | project-reorder IPAddress, UserAgent, ResourceDisplayName, UserDisplayName, UserId, UserPrincipalName, Type
  | order by TimeGenerated desc
  | extend Name = tostring(split(UserPrincipalName,'@',0)[0]), UPNSuffix = tostring(split(UserPrincipalName,'@',1)[0])
  };
  let aadSignin = aadFunc("SigninLogs");
  let aadNonInt = aadFunc("AADNonInteractiveUserSignInLogs");
  union isfuzzy=true aadSignin, aadNonInt  
version: 1.0.4
name: Microsoft Entra ID PowerShell accessing non-Entra ID resources
description: |
  'This will alert when a user or application signs in using Microsoft Entra ID PowerShell to access non-Active Directory resources, such as the Azure Key Vault, which may be undesired or unauthorized behavior.
  For capabilities and expected behavior of the Microsoft Entra ID PowerShell module, see: https://docs.microsoft.com/powershell/module/azuread/?view=azureadps-2.0.
  For further information on Microsoft Entra ID Signin activity reports, see: https://docs.microsoft.com/azure/active-directory/reports-monitoring/concept-sign-ins.'  
tactics:
- InitialAccess
severity: Low
triggerThreshold: 0
tags:
- Solorigate
- NOBELIUM
queryFrequency: 1h
status: Available
id: 50574fac-f8d1-4395-81c7-78a463ff0c52

ARM

{
  "$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/50574fac-f8d1-4395-81c7-78a463ff0c52')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/50574fac-f8d1-4395-81c7-78a463ff0c52')]",
      "properties": {
        "alertRuleTemplateName": "50574fac-f8d1-4395-81c7-78a463ff0c52",
        "customDetails": null,
        "description": "'This will alert when a user or application signs in using Microsoft Entra ID PowerShell to access non-Active Directory resources, such as the Azure Key Vault, which may be undesired or unauthorized behavior.\nFor capabilities and expected behavior of the Microsoft Entra ID PowerShell module, see: https://docs.microsoft.com/powershell/module/azuread/?view=azureadps-2.0.\nFor further information on Microsoft Entra ID Signin activity reports, see: https://docs.microsoft.com/azure/active-directory/reports-monitoring/concept-sign-ins.'\n",
        "displayName": "Microsoft Entra ID PowerShell accessing non-Entra ID resources",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "UserPrincipalName",
                "identifier": "FullName"
              },
              {
                "columnName": "Name",
                "identifier": "Name"
              },
              {
                "columnName": "UPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "UserId",
                "identifier": "AadUserId"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPAddress",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/AzureAADPowerShellAnomaly.yaml",
        "query": "let aadFunc = (tableName:string){\ntable(tableName)\n| where AppId =~ \"1b730954-1685-4b74-9bfd-dac224a7b894\" // AppDisplayName IS Azure Active Directory PowerShell\n| where TokenIssuerType =~ \"AzureAD\"\n| where ResourceIdentity !in (\"00000002-0000-0000-c000-000000000000\", \"00000003-0000-0000-c000-000000000000\") // ResourceDisplayName IS NOT Windows Azure Active Directory OR Microsoft Graph\n| extend Status = todynamic(Status)\n| where Status.errorCode == 0 // Success\n| project-reorder IPAddress, UserAgent, ResourceDisplayName, UserDisplayName, UserId, UserPrincipalName, Type\n| order by TimeGenerated desc\n| extend Name = tostring(split(UserPrincipalName,'@',0)[0]), UPNSuffix = tostring(split(UserPrincipalName,'@',1)[0])\n};\nlet aadSignin = aadFunc(\"SigninLogs\");\nlet aadNonInt = aadFunc(\"AADNonInteractiveUserSignInLogs\");\nunion isfuzzy=true aadSignin, aadNonInt\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Low",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "tags": [
          "Solorigate",
          "NOBELIUM"
        ],
        "techniques": [
          "T1078"
        ],
        "templateVersion": "1.0.4",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}