New EXE deployed via Default Domain or Default Domain Controller Policies

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Id	05b4bccd-dd12-423d-8de4-5a6fb526bb4f
Rulename	New EXE deployed via Default Domain or Default Domain Controller Policies
Description	This detection highlights executables deployed to hosts via either the Default Domain or Default Domain Controller Policies. These policies apply to all hosts or Domain Controllers and best practice is that these policies should not be used for deployment of files. A threat actor may use these policies to deploy files or scripts to all hosts in a domain.
Severity	High
Tactics	Execution LateralMovement
Techniques	T1072 T1570
Required data connectors	SecurityEvents WindowsSecurityEvents
Kind	Scheduled
Query frequency	1d
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Windows Security Events/Analytic Rules/NewEXEdeployedviaDefaultDomainorDefaultDomainControllerPolicies.yaml
Version	1.0.2
Arm template	05b4bccd-dd12-423d-8de4-5a6fb526bb4f.json

KQL

let known_processes = (
  SecurityEvent
  // If adjusting Query Period or Frequency update these
  | where TimeGenerated between(ago(14d)..ago(1d))
  | where EventID == 4688
  | where NewProcessName has_any ("Policies\\{6AC1786C-016F-11D2-945F-00C04fB984F9}", "Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}")
  | summarize by Process);
  SecurityEvent
  // If adjusting Query Period or Frequency update these
  | where TimeGenerated > ago(1d)
  | where EventID == 4688
  | where NewProcessName has_any ("Policies\\{6AC1786C-016F-11D2-945F-00C04fB984F9}", "Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}")
  | where Process !in (known_processes)
  // This will likely apply to multiple hosts so summarize these data
  | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated) by Process, NewProcessName, CommandLine, Computer
  | extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)

YAML

triggerOperator: gt
queryFrequency: 1d
description: |
  'This detection highlights executables deployed to hosts via either the Default Domain or Default Domain Controller Policies. These policies apply to all hosts or Domain Controllers and best practice is that these policies should not be used for deployment of files.
  A threat actor may use these policies to deploy files or scripts to all hosts in a domain.'  
status: Available
kind: Scheduled
triggerThreshold: 0
requiredDataConnectors:
- connectorId: SecurityEvents
  dataTypes:
  - SecurityEvent
- connectorId: WindowsSecurityEvents
  dataTypes:
  - SecurityEvent
version: 1.0.2
queryPeriod: 14d
name: New EXE deployed via Default Domain or Default Domain Controller Policies
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Windows Security Events/Analytic Rules/NewEXEdeployedviaDefaultDomainorDefaultDomainControllerPolicies.yaml
id: 05b4bccd-dd12-423d-8de4-5a6fb526bb4f
tactics:
- Execution
- LateralMovement
relevantTechniques:
- T1072
- T1570
severity: High
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: Computer
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: HostNameDomain
  entityType: Host
query: |
  let known_processes = (
    SecurityEvent
    // If adjusting Query Period or Frequency update these
    | where TimeGenerated between(ago(14d)..ago(1d))
    | where EventID == 4688
    | where NewProcessName has_any ("Policies\\{6AC1786C-016F-11D2-945F-00C04fB984F9}", "Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}")
    | summarize by Process);
    SecurityEvent
    // If adjusting Query Period or Frequency update these
    | where TimeGenerated > ago(1d)
    | where EventID == 4688
    | where NewProcessName has_any ("Policies\\{6AC1786C-016F-11D2-945F-00C04fB984F9}", "Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}")
    | where Process !in (known_processes)
    // This will likely apply to multiple hosts so summarize these data
    | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated) by Process, NewProcessName, CommandLine, Computer
    | extend HostName = tostring(split(Computer, ".")[0]), DomainIndex = toint(indexof(Computer, '.'))
    | extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/05b4bccd-dd12-423d-8de4-5a6fb526bb4f')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/05b4bccd-dd12-423d-8de4-5a6fb526bb4f')]",
      "properties": {
        "alertRuleTemplateName": "05b4bccd-dd12-423d-8de4-5a6fb526bb4f",
        "customDetails": null,
        "description": "'This detection highlights executables deployed to hosts via either the Default Domain or Default Domain Controller Policies. These policies apply to all hosts or Domain Controllers and best practice is that these policies should not be used for deployment of files.\nA threat actor may use these policies to deploy files or scripts to all hosts in a domain.'\n",
        "displayName": "New EXE deployed via Default Domain or Default Domain Controller Policies",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "Computer",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "DnsDomain"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Windows Security Events/Analytic Rules/NewEXEdeployedviaDefaultDomainorDefaultDomainControllerPolicies.yaml",
        "query": "let known_processes = (\n  SecurityEvent\n  // If adjusting Query Period or Frequency update these\n  | where TimeGenerated between(ago(14d)..ago(1d))\n  | where EventID == 4688\n  | where NewProcessName has_any (\"Policies\\\\{6AC1786C-016F-11D2-945F-00C04fB984F9}\", \"Policies\\\\{31B2F340-016D-11D2-945F-00C04FB984F9}\")\n  | summarize by Process);\n  SecurityEvent\n  // If adjusting Query Period or Frequency update these\n  | where TimeGenerated > ago(1d)\n  | where EventID == 4688\n  | where NewProcessName has_any (\"Policies\\\\{6AC1786C-016F-11D2-945F-00C04fB984F9}\", \"Policies\\\\{31B2F340-016D-11D2-945F-00C04FB984F9}\")\n  | where Process !in (known_processes)\n  // This will likely apply to multiple hosts so summarize these data\n  | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated) by Process, NewProcessName, CommandLine, Computer\n  | extend HostName = tostring(split(Computer, \".\")[0]), DomainIndex = toint(indexof(Computer, '.'))\n  | extend HostNameDomain = iff(DomainIndex != -1, substring(Computer, DomainIndex + 1), Computer)\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P14D",
        "severity": "High",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution",
          "LateralMovement"
        ],
        "techniques": [
          "T1072",
          "T1570"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}