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/'

Query · kql

DeviceFileEvents
  | where ActionType =~ "FileCreated"
  | where FolderPath has "C:\\Windows\\System32\\spool\\drivers\\color\\" 
  | where FileName endswith ".exe" or FileName endswith ".dll"
Raw source PE file dropped in Color Profile Folder · KQL
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Published by Azure/Azure-Sentinel ↗, licensed under MIT ↗. Reproduced here unmodified.
id: f68a5046-b7eb-4f69-9519-1e99708bb9e0
name:  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
requiredDataConnectors:
  - connectorId: MicrosoftThreatProtection
    dataTypes:
      - DeviceFileEvents
queryFrequency: 1d
queryPeriod: 1d
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Execution
relevantTechniques:
  - T1203
tags:
  - KNOTWEED
query: |
  DeviceFileEvents
    | where ActionType =~ "FileCreated"
    | where FolderPath has "C:\\Windows\\System32\\spool\\drivers\\color\\" 
    | where FileName endswith ".exe" or FileName endswith ".dll"
entityMappings:
  - entityType: File
    fieldMappings:
      - identifier: Name
        columnName: FileName
  - entityType: Host
    fieldMappings:
      - identifier: HostName
        columnName: DeviceName
version: 1.0.1
kind: Scheduled
metadata:
    source:
        kind: Community
    author:
        name: Pete Bryan
    support:
        tier: Community
    categories:
        domains: [ "Security - Others" ]

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