VIP Mailbox manipulation
Id | 5170c3c4-b8c9-485c-910d-a21d965ee181 |
Rulename | VIP Mailbox manipulation |
Description | Alert if a cmdlet that can be translated to data exfiltration or mailbox access is executed on a VIP Mailbox. |
Severity | Low |
Tactics | Exfiltration Persistence Collection |
Techniques | T1020 T1098 T1114 |
Required data connectors | ESI-ExchangeAdminAuditLogEvents |
Kind | Scheduled |
Query frequency | 30m |
Query period | 1h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Exchange Security - Exchange On-Premises/Analytic Rules/CriticalCmdletsUsageDetection.yaml |
Version | 1.0.1 |
Arm template | 5170c3c4-b8c9-485c-910d-a21d965ee181.json |
ExchangeAdminAuditLogs
| where ingestion_time() > ago(30m)
| where IsSensitive == true
| where UserOriented =~ 'Yes'
| where IsVIP == true
severity: Low
queryFrequency: 30m
relevantTechniques:
- T1020
- T1098
- T1114
tactics:
- Exfiltration
- Persistence
- Collection
kind: Scheduled
query: |
ExchangeAdminAuditLogs
| where ingestion_time() > ago(30m)
| where IsSensitive == true
| where UserOriented =~ 'Yes'
| where IsVIP == true
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Exchange Security - Exchange On-Premises/Analytic Rules/CriticalCmdletsUsageDetection.yaml
queryPeriod: 1h
status: Available
version: 1.0.1
name: VIP Mailbox manipulation
requiredDataConnectors:
- dataTypes:
- Event
connectorId: ESI-ExchangeAdminAuditLogEvents
triggerOperator: gt
entityMappings:
- entityType: Mailbox
fieldMappings:
- identifier: MailboxPrimaryAddress
columnName: TargetObject
- entityType: Host
fieldMappings:
- identifier: FullName
columnName: Computer
- entityType: Account
fieldMappings:
- identifier: Sid
columnName: TargetObject
- identifier: ObjectGuid
columnName: TargetObject
- identifier: FullName
columnName: TargetObject
- entityType: Account
fieldMappings:
- identifier: Name
columnName: Caller
id: 5170c3c4-b8c9-485c-910d-a21d965ee181
description: |
'Alert if a cmdlet that can be translated to data exfiltration or mailbox access is executed on a VIP Mailbox.'
triggerThreshold: 0
{
"$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/5170c3c4-b8c9-485c-910d-a21d965ee181')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/5170c3c4-b8c9-485c-910d-a21d965ee181')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "VIP Mailbox manipulation",
"description": "'Alert if a cmdlet that can be translated to data exfiltration or mailbox access is executed on a VIP Mailbox.'\n",
"severity": "Low",
"enabled": true,
"query": "ExchangeAdminAuditLogs\n| where ingestion_time() > ago(30m)\n| where IsSensitive == true\n| where UserOriented =~ 'Yes'\n| where IsVIP == true\n",
"queryFrequency": "PT30M",
"queryPeriod": "PT1H",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Exfiltration",
"Persistence",
"Collection"
],
"techniques": [
"T1020",
"T1098",
"T1114"
],
"alertRuleTemplateName": "5170c3c4-b8c9-485c-910d-a21d965ee181",
"customDetails": null,
"entityMappings": [
{
"fieldMappings": [
{
"columnName": "TargetObject",
"identifier": "MailboxPrimaryAddress"
}
],
"entityType": "Mailbox"
},
{
"fieldMappings": [
{
"columnName": "Computer",
"identifier": "FullName"
}
],
"entityType": "Host"
},
{
"fieldMappings": [
{
"columnName": "TargetObject",
"identifier": "Sid"
},
{
"columnName": "TargetObject",
"identifier": "ObjectGuid"
},
{
"columnName": "TargetObject",
"identifier": "FullName"
}
],
"entityType": "Account"
},
{
"fieldMappings": [
{
"columnName": "Caller",
"identifier": "Name"
}
],
"entityType": "Account"
}
],
"templateVersion": "1.0.1",
"status": "Available",
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Exchange Security - Exchange On-Premises/Analytic Rules/CriticalCmdletsUsageDetection.yaml"
}
}
]
}