New EXE deployed via Default Domain or Default Domain Controller Policies ASIM Version

Back


Id	0dd2a343-4bf9-4c93-a547-adf3658ddaec
Rulename	New EXE deployed via Default Domain or Default Domain Controller Policies (ASIM Version)
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. This query uses the ASIM parsers and will need them deployed before usage - https://docs.microsoft.com/azure/sentinel/normalization
Severity	High
Tactics	Execution LateralMovement
Techniques	T1072 T1570
Required data connectors	SecurityEvents
Kind	Scheduled
Query frequency	1d
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/NewEXEdeployedviaDefaultDomainorDefaultDomainControllerPolicies%28ASIMVersion%29.yaml
Version	1.0.5
Arm template	0dd2a343-4bf9-4c93-a547-adf3658ddaec.json

KQL

let known_processes = (
  imProcess
  // Change these values if adjusting Query Frequency or Query Period
  | where TimeGenerated between(ago(14d)..ago(1d))
  | where Process has_any ("Policies\\{6AC1786C-016F-11D2-945F-00C04fB984F9}", "Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}")
  | summarize by Process);
  imProcess
  // Change these values if adjusting Query Frequency or Query Period
  | where TimeGenerated > ago(1d)
  | where Process has_any ("Policies\\{6AC1786C-016F-11D2-945F-00C04fB984F9}", "Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}")
  | where Process !in (known_processes)
  | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated) by Process, CommandLine, DvcHostname
  | extend HostName = tostring(split(DvcHostname, ".")[0]), DomainIndex = toint(indexof(DvcHostname, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(DvcHostname, DomainIndex + 1), DvcHostname)
  | project-away DomainIndex

YAML

name: New EXE deployed via Default Domain or Default Domain Controller Policies (ASIM Version)
triggerOperator: gt
query: |
  let known_processes = (
    imProcess
    // Change these values if adjusting Query Frequency or Query Period
    | where TimeGenerated between(ago(14d)..ago(1d))
    | where Process has_any ("Policies\\{6AC1786C-016F-11D2-945F-00C04fB984F9}", "Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}")
    | summarize by Process);
    imProcess
    // Change these values if adjusting Query Frequency or Query Period
    | where TimeGenerated > ago(1d)
    | where Process has_any ("Policies\\{6AC1786C-016F-11D2-945F-00C04fB984F9}", "Policies\\{31B2F340-016D-11D2-945F-00C04FB984F9}")
    | where Process !in (known_processes)
    | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated) by Process, CommandLine, DvcHostname
    | extend HostName = tostring(split(DvcHostname, ".")[0]), DomainIndex = toint(indexof(DvcHostname, '.'))
    | extend HostNameDomain = iff(DomainIndex != -1, substring(DvcHostname, DomainIndex + 1), DvcHostname)
    | project-away DomainIndex
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.
    This query uses the ASIM parsers and will need them deployed before usage - https://docs.microsoft.com/azure/sentinel/normalization'
id: 0dd2a343-4bf9-4c93-a547-adf3658ddaec
triggerThreshold: 0
queryPeriod: 14d
version: 1.0.5
kind: Scheduled
relevantTechniques:
- T1072
- T1570
severity: High
requiredDataConnectors:
- connectorId: SecurityEvents
  dataTypes:
  - SecurityEvents
metadata:
  categories:
    domains:
    - Security - Threat Protection
  support:
    tier: Community
  author:
    name: Microsoft Security Community
  source:
    kind: Community
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/NewEXEdeployedviaDefaultDomainorDefaultDomainControllerPolicies%28ASIMVersion%29.yaml
tactics:
- Execution
- LateralMovement
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: DvcHostname
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: HostNameDomain
  entityType: Host

ARM

{
  "$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/0dd2a343-4bf9-4c93-a547-adf3658ddaec')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/0dd2a343-4bf9-4c93-a547-adf3658ddaec')]",
      "properties": {
        "alertRuleTemplateName": "0dd2a343-4bf9-4c93-a547-adf3658ddaec",
        "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.\n  A threat actor may use these policies to deploy files or scripts to all hosts in a domain.\n  This query uses the ASIM parsers and will need them deployed before usage - https://docs.microsoft.com/azure/sentinel/normalization'\n",
        "displayName": "New EXE deployed via Default Domain or Default Domain Controller Policies (ASIM Version)",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DvcHostname",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "DnsDomain"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/NewEXEdeployedviaDefaultDomainorDefaultDomainControllerPolicies%28ASIMVersion%29.yaml",
        "query": "let known_processes = (\n  imProcess\n  // Change these values if adjusting Query Frequency or Query Period\n  | where TimeGenerated between(ago(14d)..ago(1d))\n  | where Process has_any (\"Policies\\\\{6AC1786C-016F-11D2-945F-00C04fB984F9}\", \"Policies\\\\{31B2F340-016D-11D2-945F-00C04FB984F9}\")\n  | summarize by Process);\n  imProcess\n  // Change these values if adjusting Query Frequency or Query Period\n  | where TimeGenerated > ago(1d)\n  | where Process has_any (\"Policies\\\\{6AC1786C-016F-11D2-945F-00C04fB984F9}\", \"Policies\\\\{31B2F340-016D-11D2-945F-00C04FB984F9}\")\n  | where Process !in (known_processes)\n  | summarize FirstSeen=min(TimeGenerated), LastSeen=max(TimeGenerated) by Process, CommandLine, DvcHostname\n  | extend HostName = tostring(split(DvcHostname, \".\")[0]), DomainIndex = toint(indexof(DvcHostname, '.'))\n  | extend HostNameDomain = iff(DomainIndex != -1, substring(DvcHostname, DomainIndex + 1), DvcHostname)\n  | project-away DomainIndex\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P14D",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution",
          "LateralMovement"
        ],
        "techniques": [
          "T1072",
          "T1570"
        ],
        "templateVersion": "1.0.5",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}