PE file dropped in Color Profile Folder

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Id	f68a5046-b7eb-4f69-9519-1e99708bb9e0
Rulename	PE file dropped in Color Profile Folder
Description	This query looks for writes of PE files to C:\Windows\System32\spool\drivers\color\. This is a common directory used by malware, as well as some legitimate programs, and writes of PE files to the folder should be monitored. Ref: https://www.microsoft.com/security/blog/2022/07/27/untangling-knotweed-european-private-sector-offensive-actor-using-0-day-exploits/
Severity	Medium
Tactics	Execution
Techniques	T1203
Required data connectors	MicrosoftThreatProtection
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Detections/DeviceFileEvents/PEfiledroppedinColorDriversFolder.yaml
Version	1.0.1
Arm template	f68a5046-b7eb-4f69-9519-1e99708bb9e0.json

KQL

DeviceFileEvents
  | where ActionType =~ "FileCreated"
  | where FolderPath has "C:\\Windows\\System32\\spool\\drivers\\color\\" 
  | where FileName endswith ".exe" or FileName endswith ".dll"

YAML

relevantTechniques:
- T1203
name: PE file dropped in Color Profile Folder
requiredDataConnectors:
- dataTypes:
  - DeviceFileEvents
  connectorId: MicrosoftThreatProtection
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: FileName
  entityType: File
- fieldMappings:
  - identifier: HostName
    columnName: DeviceName
  entityType: Host
triggerThreshold: 0
id: f68a5046-b7eb-4f69-9519-1e99708bb9e0
tactics:
- Execution
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/DeviceFileEvents/PEfiledroppedinColorDriversFolder.yaml
queryPeriod: 1d
kind: Scheduled
tags:
- KNOTWEED
metadata:
  categories:
    domains:
    - Security - Others
  author:
    name: Pete Bryan
  support:
    tier: Community
  source:
    kind: Community
queryFrequency: 1d
severity: Medium
description: |
  'This query looks for writes of PE files to C:\Windows\System32\spool\drivers\color\.
    This is a common directory used by malware, as well as some legitimate programs, and writes of PE files to the folder should be monitored.
    Ref: https://www.microsoft.com/security/blog/2022/07/27/untangling-knotweed-european-private-sector-offensive-actor-using-0-day-exploits/'  
query: |
  DeviceFileEvents
    | where ActionType =~ "FileCreated"
    | where FolderPath has "C:\\Windows\\System32\\spool\\drivers\\color\\" 
    | where FileName endswith ".exe" or FileName endswith ".dll"  
triggerOperator: gt

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/f68a5046-b7eb-4f69-9519-1e99708bb9e0')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/f68a5046-b7eb-4f69-9519-1e99708bb9e0')]",
      "properties": {
        "alertRuleTemplateName": "f68a5046-b7eb-4f69-9519-1e99708bb9e0",
        "customDetails": null,
        "description": "'This query looks for writes of PE files to C:\\Windows\\System32\\spool\\drivers\\color\\.\n  This is a common directory used by malware, as well as some legitimate programs, and writes of PE files to the folder should be monitored.\n  Ref: https://www.microsoft.com/security/blog/2022/07/27/untangling-knotweed-european-private-sector-offensive-actor-using-0-day-exploits/'\n",
        "displayName": "PE file dropped in Color Profile Folder",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "File",
            "fieldMappings": [
              {
                "columnName": "FileName",
                "identifier": "Name"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DeviceName",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/DeviceFileEvents/PEfiledroppedinColorDriversFolder.yaml",
        "query": "DeviceFileEvents\n  | where ActionType =~ \"FileCreated\"\n  | where FolderPath has \"C:\\\\Windows\\\\System32\\\\spool\\\\drivers\\\\color\\\\\" \n  | where FileName endswith \".exe\" or FileName endswith \".dll\"\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Execution"
        ],
        "tags": [
          "KNOTWEED"
        ],
        "techniques": [
          "T1203"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}