Service Principal Authentication Attempt from New Country

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Id	1baaaf00-655f-4de9-8ff8-312e902cda71
Rulename	Service Principal Authentication Attempt from New Country
Description	Detects when there is a Service Principal login attempt from a country that has not seen a successful login in the previous 14 days. Threat actors may attempt to authenticate with credentials from compromised accounts - monitoring attempts from anomalous locations may help identify these attempts. Authentication attempts should be investigated to ensure the activity was legitimate and if there is other similar activity. Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-for-failed-unusual-sign-ins
Severity	Medium
Tactics	InitialAccess
Techniques	T1078.004
Required data connectors	AzureActiveDirectory
Kind	Scheduled
Query frequency	1d
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SigninLogs/ServicePrincipalAuthenticationAttemptfromNewCountry.yaml
Version	1.0.1
Arm template	1baaaf00-655f-4de9-8ff8-312e902cda71.json

KQL

let known_locations = (
  AADServicePrincipalSignInLogs
  | where TimeGenerated between(ago(14d)..ago(1d))
  | where ResultType == 0
  | summarize by Location);
  AADServicePrincipalSignInLogs
  | where TimeGenerated > ago(1d)
  | where ResultType != 50126
  | where Location !in (known_locations)
  | extend City = tostring(parse_json(LocationDetails).city)
  | extend State = tostring(parse_json(LocationDetails).state)
  | extend Place = strcat(City, " - ", State)
  | extend Result = strcat(tostring(ResultType), " - ", ResultDescription)
  | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated), make_set(Result), make_set(IPAddress), make_set(Place) by ServicePrincipalName, Location

YAML

relevantTechniques:
- T1078.004
name: Service Principal Authentication Attempt from New Country
requiredDataConnectors:
- dataTypes:
  - AADServicePrincipalSignInLogs
  connectorId: AzureActiveDirectory
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: ServicePrincipalName
  entityType: Account
triggerThreshold: 0
id: 1baaaf00-655f-4de9-8ff8-312e902cda71
tactics:
- InitialAccess
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SigninLogs/ServicePrincipalAuthenticationAttemptfromNewCountry.yaml
queryPeriod: 14d
kind: Scheduled
tags:
- AADSecOpsGuide
metadata:
  categories:
    domains:
    - Security - Others
    - Identity
  author:
    name: Pete Bryan
  support:
    tier: Community
  source:
    kind: Community
queryFrequency: 1d
severity: Medium
description: |
  'Detects when there is a Service Principal login attempt from a country that has not seen a successful login in the previous 14 days.
    Threat actors may attempt to authenticate with credentials from compromised accounts - monitoring attempts from anomalous locations may help identify these attempts.
    Authentication attempts should be investigated to ensure the activity was legitimate and if there is other similar activity.
    Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-for-failed-unusual-sign-ins'  
query: |
  let known_locations = (
    AADServicePrincipalSignInLogs
    | where TimeGenerated between(ago(14d)..ago(1d))
    | where ResultType == 0
    | summarize by Location);
    AADServicePrincipalSignInLogs
    | where TimeGenerated > ago(1d)
    | where ResultType != 50126
    | where Location !in (known_locations)
    | extend City = tostring(parse_json(LocationDetails).city)
    | extend State = tostring(parse_json(LocationDetails).state)
    | extend Place = strcat(City, " - ", State)
    | extend Result = strcat(tostring(ResultType), " - ", ResultDescription)
    | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated), make_set(Result), make_set(IPAddress), make_set(Place) by ServicePrincipalName, Location  
triggerOperator: gt

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/1baaaf00-655f-4de9-8ff8-312e902cda71')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1baaaf00-655f-4de9-8ff8-312e902cda71')]",
      "properties": {
        "alertRuleTemplateName": "1baaaf00-655f-4de9-8ff8-312e902cda71",
        "customDetails": null,
        "description": "'Detects when there is a Service Principal login attempt from a country that has not seen a successful login in the previous 14 days.\n  Threat actors may attempt to authenticate with credentials from compromised accounts - monitoring attempts from anomalous locations may help identify these attempts.\n  Authentication attempts should be investigated to ensure the activity was legitimate and if there is other similar activity.\n  Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-user-accounts#monitoring-for-failed-unusual-sign-ins'\n",
        "displayName": "Service Principal Authentication Attempt from New Country",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ServicePrincipalName",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SigninLogs/ServicePrincipalAuthenticationAttemptfromNewCountry.yaml",
        "query": "let known_locations = (\n  AADServicePrincipalSignInLogs\n  | where TimeGenerated between(ago(14d)..ago(1d))\n  | where ResultType == 0\n  | summarize by Location);\n  AADServicePrincipalSignInLogs\n  | where TimeGenerated > ago(1d)\n  | where ResultType != 50126\n  | where Location !in (known_locations)\n  | extend City = tostring(parse_json(LocationDetails).city)\n  | extend State = tostring(parse_json(LocationDetails).state)\n  | extend Place = strcat(City, \" - \", State)\n  | extend Result = strcat(tostring(ResultType), \" - \", ResultDescription)\n  | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated), make_set(Result), make_set(IPAddress), make_set(Place) by ServicePrincipalName, Location\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [
          "T1078.004"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "tags": [
          "AADSecOpsGuide"
        ],
        "techniques": [
          "T1078"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}