Sdelete deployed via GPO and run recursively ASIM Version

_Im_ProcessEvent
| where EventType =~ "ProcessCreated"
| where Process endswith "svchost.exe"
| where CommandLine has "-k GPSvcGroup" or CommandLine has "-s gpsvc"
| extend timekey = bin(TimeGenerated, 1m)
| project timekey, ActingProcessId, Dvc
| join kind=inner (
  _Im_ProcessEvent
  | where EventType =~ "ProcessCreated"
  | where Process =~ "sdelete.exe" or CommandLine has "sdelete"
  | where ActingProcessName endswith "svchost.exe"
  | where CommandLine has_all ("-s", "-r")
  | extend timekey = bin(TimeGenerated, 1m)
  ) 
  on $left.ActingProcessId == $right.ParentProcessId, timekey, Dvc
| extend AccountName = tostring(split(ActorUsername, @'\')[1]), AccountNTDomain = tostring(split(ActorUsername, @'\')[0])
| extend HostName = tostring(split(Dvc, ".")[0]), DomainIndex = toint(indexof(Dvc, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Dvc, DomainIndex + 1), Dvc)
| project-away DomainIndex

tags:
- 
severity: Medium
queryPeriod: 1d
kind: Scheduled
requiredDataConnectors: []
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/SdeletedeployedviaGPOandrunrecursively%28ASIMVersion%29.yaml
metadata:
  source:
    kind: Community
  author:
    name: Microsoft Security Research
  support:
    tier: Community
  categories:
    domains:
    - Security - Threat Protection
relevantTechniques:
- T1485
entityMappings:
- fieldMappings:
  - columnName: ActorUsername
    identifier: FullName
  - columnName: AccountName
    identifier: Name
  - columnName: AccountNTDomain
    identifier: NTDomain
  entityType: Account
- fieldMappings:
  - columnName: Dvc
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: DnsDomain
  entityType: Host
- fieldMappings:
  - columnName: DvcIpAddr
    identifier: Address
  entityType: IP
name: Sdelete deployed via GPO and run recursively (ASIM Version)
query: |
  _Im_ProcessEvent
  | where EventType =~ "ProcessCreated"
  | where Process endswith "svchost.exe"
  | where CommandLine has "-k GPSvcGroup" or CommandLine has "-s gpsvc"
  | extend timekey = bin(TimeGenerated, 1m)
  | project timekey, ActingProcessId, Dvc
  | join kind=inner (
    _Im_ProcessEvent
    | where EventType =~ "ProcessCreated"
    | where Process =~ "sdelete.exe" or CommandLine has "sdelete"
    | where ActingProcessName endswith "svchost.exe"
    | where CommandLine has_all ("-s", "-r")
    | extend timekey = bin(TimeGenerated, 1m)
    ) 
    on $left.ActingProcessId == $right.ParentProcessId, timekey, Dvc
  | extend AccountName = tostring(split(ActorUsername, @'\')[1]), AccountNTDomain = tostring(split(ActorUsername, @'\')[0])
  | extend HostName = tostring(split(Dvc, ".")[0]), DomainIndex = toint(indexof(Dvc, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(Dvc, DomainIndex + 1), Dvc)
  | project-away DomainIndex
queryFrequency: 1d
version: 1.0.6
description: |
  'This query looks for the Sdelete process being run recursively after being deployed to a host via GPO. Attackers could use this technique to deploy Sdelete to multiple host and delete data on them.
    This query uses the Advanced Security Information Model. Parsers will need to be deployed before use: https://docs.microsoft.com/azure/sentinel/normalization'
tactics:
- Impact
triggerOperator: gt
id: 30c8b802-ace1-4408-bc29-4c5c5afb49e1

{
  "$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/30c8b802-ace1-4408-bc29-4c5c5afb49e1')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/30c8b802-ace1-4408-bc29-4c5c5afb49e1')]",
      "properties": {
        "alertRuleTemplateName": "30c8b802-ace1-4408-bc29-4c5c5afb49e1",
        "customDetails": null,
        "description": "'This query looks for the Sdelete process being run recursively after being deployed to a host via GPO. Attackers could use this technique to deploy Sdelete to multiple host and delete data on them.\n  This query uses the Advanced Security Information Model. Parsers will need to be deployed before use: https://docs.microsoft.com/azure/sentinel/normalization'\n",
        "displayName": "Sdelete deployed via GPO and run recursively (ASIM Version)",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ActorUsername",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountNTDomain",
                "identifier": "NTDomain"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Dvc",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "DnsDomain"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "DvcIpAddr",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/SdeletedeployedviaGPOandrunrecursively%28ASIMVersion%29.yaml",
        "query": "_Im_ProcessEvent\n| where EventType =~ \"ProcessCreated\"\n| where Process endswith \"svchost.exe\"\n| where CommandLine has \"-k GPSvcGroup\" or CommandLine has \"-s gpsvc\"\n| extend timekey = bin(TimeGenerated, 1m)\n| project timekey, ActingProcessId, Dvc\n| join kind=inner (\n  _Im_ProcessEvent\n  | where EventType =~ \"ProcessCreated\"\n  | where Process =~ \"sdelete.exe\" or CommandLine has \"sdelete\"\n  | where ActingProcessName endswith \"svchost.exe\"\n  | where CommandLine has_all (\"-s\", \"-r\")\n  | extend timekey = bin(TimeGenerated, 1m)\n  ) \n  on $left.ActingProcessId == $right.ParentProcessId, timekey, Dvc\n| extend AccountName = tostring(split(ActorUsername, @'\\')[1]), AccountNTDomain = tostring(split(ActorUsername, @'\\')[0])\n| extend HostName = tostring(split(Dvc, \".\")[0]), DomainIndex = toint(indexof(Dvc, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(Dvc, DomainIndex + 1), Dvc)\n| project-away DomainIndex\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "tags": [
          null
        ],
        "techniques": [
          "T1485"
        ],
        "templateVersion": "1.0.6",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}