Workspace deletion activity from an infected device

SecurityAlert
| where TimeGenerated > ago(1d)
| where ProductName == "Azure Active Directory Identity Protection"
| where AlertName == "Sign-in from an infected device"
| mv-apply EntityAccount=todynamic(Entities) on
(
where EntityAccount.Type == "account"
| extend AadTenantId = tostring(EntityAccount.AadTenantId), AadUserId = tostring(EntityAccount.AadUserId)
)
| mv-apply EntityIp=todynamic(Entities) on
(
where EntityIp.Type == "ip"
| extend IpAddress = tostring(EntityIp.Address)
)
| join kind=inner (
IdentityInfo
| distinct AccountTenantId, AccountObjectId, AccountUPN, AccountDisplayName
| extend UserAccount = AccountUPN
| extend UserName = AccountDisplayName
| where isnotempty(AccountDisplayName) and isnotempty(UserAccount)
| project AccountTenantId, AccountObjectId, UserAccount, UserName
)
on
$left.AadTenantId == $right.AccountTenantId,
$left.AadUserId == $right.AccountObjectId
| extend CompromisedEntity = iff(CompromisedEntity == "N/A" or isempty(CompromisedEntity), UserAccount, CompromisedEntity)
| project  AlertName, AlertSeverity, CompromisedEntity, UserAccount, IpAddress, TimeGenerated, UserName
| join kind=inner 
(
AzureActivity
| where OperationNameValue has_any ("/workspaces/computes/delete", "workspaces/delete") 
| where ActivityStatusValue has_any ("Succeeded", "Success")
| project TimeGenerated, ResourceProviderValue, _ResourceId, SubscriptionId, UserAccount=Caller, IpAddress=CallerIpAddress, CorrelationId, OperationId, ResourceGroup, TenantId
) on IpAddress, UserAccount
| extend AccountName = tostring(split(UserAccount, "@")[0]), AccountUPNSuffix = tostring(split(UserAccount, "@")[1])

entityMappings:
- fieldMappings:
  - columnName: UserAccount
    identifier: FullName
  - columnName: AccountName
    identifier: Name
  - columnName: AccountUPNSuffix
    identifier: UPNSuffix
  entityType: Account
- fieldMappings:
  - columnName: IpAddress
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: _ResourceId
    identifier: ResourceId
  entityType: AzureResource
triggerThreshold: 0
severity: Medium
queryFrequency: 1d
queryPeriod: 14d
relevantTechniques:
- T1078
- T1489
triggerOperator: gt
id: a5b3429d-f1da-42b9-883c-327ecb7b91ff
requiredDataConnectors:
- connectorId: AzureActiveDirectoryIdentityProtection
  dataTypes:
  - SecurityAlert (IPC)
- connectorId: AzureActivity
  dataTypes:
  - AzureActivity
- connectorId: BehaviorAnalytics
  dataTypes:
  - IdentityInfo
version: 1.0.8
name: Workspace deletion activity from an infected device
metadata:
  categories:
    domains:
    - Security - Threat Protection
    - Platform
  author:
    name: Microsoft Security Research
  support:
    tier: Community
  source:
    kind: Community
description: |
  'This query will alert on any sign-ins from devices infected with malware in correlation with workspace deletion activity. 
  Attackers may attempt to delete workspaces containing compute instances after successful compromise to cause service unavailability to regular business operation.'  
query: |
  SecurityAlert
  | where TimeGenerated > ago(1d)
  | where ProductName == "Azure Active Directory Identity Protection"
  | where AlertName == "Sign-in from an infected device"
  | mv-apply EntityAccount=todynamic(Entities) on
  (
  where EntityAccount.Type == "account"
  | extend AadTenantId = tostring(EntityAccount.AadTenantId), AadUserId = tostring(EntityAccount.AadUserId)
  )
  | mv-apply EntityIp=todynamic(Entities) on
  (
  where EntityIp.Type == "ip"
  | extend IpAddress = tostring(EntityIp.Address)
  )
  | join kind=inner (
  IdentityInfo
  | distinct AccountTenantId, AccountObjectId, AccountUPN, AccountDisplayName
  | extend UserAccount = AccountUPN
  | extend UserName = AccountDisplayName
  | where isnotempty(AccountDisplayName) and isnotempty(UserAccount)
  | project AccountTenantId, AccountObjectId, UserAccount, UserName
  )
  on
  $left.AadTenantId == $right.AccountTenantId,
  $left.AadUserId == $right.AccountObjectId
  | extend CompromisedEntity = iff(CompromisedEntity == "N/A" or isempty(CompromisedEntity), UserAccount, CompromisedEntity)
  | project  AlertName, AlertSeverity, CompromisedEntity, UserAccount, IpAddress, TimeGenerated, UserName
  | join kind=inner 
  (
  AzureActivity
  | where OperationNameValue has_any ("/workspaces/computes/delete", "workspaces/delete") 
  | where ActivityStatusValue has_any ("Succeeded", "Success")
  | project TimeGenerated, ResourceProviderValue, _ResourceId, SubscriptionId, UserAccount=Caller, IpAddress=CallerIpAddress, CorrelationId, OperationId, ResourceGroup, TenantId
  ) on IpAddress, UserAccount
  | extend AccountName = tostring(split(UserAccount, "@")[0]), AccountUPNSuffix = tostring(split(UserAccount, "@")[1])  
tactics:
- InitialAccess
- Impact
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/Suspicious_WorkSpaceDeletion_Attempt.yaml
kind: Scheduled

{
  "$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/a5b3429d-f1da-42b9-883c-327ecb7b91ff')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a5b3429d-f1da-42b9-883c-327ecb7b91ff')]",
      "properties": {
        "alertRuleTemplateName": "a5b3429d-f1da-42b9-883c-327ecb7b91ff",
        "customDetails": null,
        "description": "'This query will alert on any sign-ins from devices infected with malware in correlation with workspace deletion activity. \nAttackers may attempt to delete workspaces containing compute instances after successful compromise to cause service unavailability to regular business operation.'\n",
        "displayName": "Workspace deletion activity from an infected device",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "UserAccount",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountUPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IpAddress",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "AzureResource",
            "fieldMappings": [
              {
                "columnName": "_ResourceId",
                "identifier": "ResourceId"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/Suspicious_WorkSpaceDeletion_Attempt.yaml",
        "query": "SecurityAlert\n| where TimeGenerated > ago(1d)\n| where ProductName == \"Azure Active Directory Identity Protection\"\n| where AlertName == \"Sign-in from an infected device\"\n| mv-apply EntityAccount=todynamic(Entities) on\n(\nwhere EntityAccount.Type == \"account\"\n| extend AadTenantId = tostring(EntityAccount.AadTenantId), AadUserId = tostring(EntityAccount.AadUserId)\n)\n| mv-apply EntityIp=todynamic(Entities) on\n(\nwhere EntityIp.Type == \"ip\"\n| extend IpAddress = tostring(EntityIp.Address)\n)\n| join kind=inner (\nIdentityInfo\n| distinct AccountTenantId, AccountObjectId, AccountUPN, AccountDisplayName\n| extend UserAccount = AccountUPN\n| extend UserName = AccountDisplayName\n| where isnotempty(AccountDisplayName) and isnotempty(UserAccount)\n| project AccountTenantId, AccountObjectId, UserAccount, UserName\n)\non\n$left.AadTenantId == $right.AccountTenantId,\n$left.AadUserId == $right.AccountObjectId\n| extend CompromisedEntity = iff(CompromisedEntity == \"N/A\" or isempty(CompromisedEntity), UserAccount, CompromisedEntity)\n| project  AlertName, AlertSeverity, CompromisedEntity, UserAccount, IpAddress, TimeGenerated, UserName\n| join kind=inner \n(\nAzureActivity\n| where OperationNameValue has_any (\"/workspaces/computes/delete\", \"workspaces/delete\") \n| where ActivityStatusValue has_any (\"Succeeded\", \"Success\")\n| project TimeGenerated, ResourceProviderValue, _ResourceId, SubscriptionId, UserAccount=Caller, IpAddress=CallerIpAddress, CorrelationId, OperationId, ResourceGroup, TenantId\n) on IpAddress, UserAccount\n| extend AccountName = tostring(split(UserAccount, \"@\")[0]), AccountUPNSuffix = tostring(split(UserAccount, \"@\")[1])\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact",
          "InitialAccess"
        ],
        "techniques": [
          "T1078",
          "T1489"
        ],
        "templateVersion": "1.0.8",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}