Detects potential DLL sideloading of “wwlib.dll”
title: Potential WWlib.DLL Sideloading
id: e2e01011-5910-4267-9c3b-4149ed5479cf
status: test
description: Detects potential DLL sideloading of "wwlib.dll"
references:
- https://twitter.com/WhichbufferArda/status/1658829954182774784
- https://news.sophos.com/en-us/2022/11/03/family-tree-dll-sideloading-cases-may-be-related/
- https://securelist.com/apt-luminousmoth/103332/
author: X__Junior (Nextron Systems)
date: 2023-05-18
tags:
- attack.persistence
- attack.privilege-escalation
- attack.execution
- attack.stealth
- attack.t1574.001
logsource:
category: image_load
product: windows
detection:
selection:
ImageLoaded|endswith: '\wwlib.dll'
filter_main_path:
Image|startswith:
- 'C:\Program Files (x86)\Microsoft Office\'
- 'C:\Program Files\Microsoft Office\'
Image|endswith: '\winword.exe'
ImageLoaded|startswith:
- 'C:\Program Files (x86)\Microsoft Office\'
- 'C:\Program Files\Microsoft Office\'
condition: selection and not 1 of filter_main_*
falsepositives:
- Unknown
level: medium
DeviceImageLoadEvents
| where FolderPath endswith "\\wwlib.dll" and (not(((InitiatingProcessFolderPath startswith "C:\\Program Files (x86)\\Microsoft Office\\" or InitiatingProcessFolderPath startswith "C:\\Program Files\\Microsoft Office\\") and InitiatingProcessFolderPath endswith "\\winword.exe" and (FolderPath startswith "C:\\Program Files (x86)\\Microsoft Office\\" or FolderPath startswith "C:\\Program Files\\Microsoft Office\\"))))| Sentinel Table | Notes |
|---|---|
DeviceImageLoadEvents | Ensure this data connector is enabled |