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])

kind: Scheduled
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
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.'  
severity: Medium
queryFrequency: 1d
triggerThreshold: 0
relevantTechniques:
- T1078
- T1489
metadata:
  support:
    tier: Community
  source:
    kind: Community
  author:
    name: Microsoft Security Research
  categories:
    domains:
    - Security - Threat Protection
    - Platform
tactics:
- InitialAccess
- Impact
name: Workspace deletion activity from an infected device
id: a5b3429d-f1da-42b9-883c-327ecb7b91ff
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])  
requiredDataConnectors:
- dataTypes:
  - SecurityAlert (IPC)
  connectorId: AzureActiveDirectoryIdentityProtection
- dataTypes:
  - AzureActivity
  connectorId: AzureActivity
- dataTypes:
  - IdentityInfo
  connectorId: BehaviorAnalytics
version: 1.0.8
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/Suspicious_WorkSpaceDeletion_Attempt.yaml
queryPeriod: 14d

{
  "$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"
    }
  ]
}