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

{
  "$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"
    }
  ]
}