Uncommon Child Process Of AddinUtil.EXE
Detects uncommon child processes of the Add-In deployment cache updating utility (AddInutil.exe) which could be a sign of potential abuse of the binary to proxy execution via a custom Addins.Store payload.
Detection logic
selection
ParentImage|endswith: \addinutil.exefilter_main_werfault
Image|endswith:
- :\Windows\System32\conhost.exe
- :\Windows\System32\werfault.exe
- :\Windows\SysWOW64\werfault.exeCondition
selection and not 1 of filter_main_*Raw YAML
title: Uncommon Child Process Of AddinUtil.EXE
id: b5746143-59d6-4603-8d06-acbd60e166ee
status: test
description: |
Detects uncommon child processes of the Add-In deployment cache updating utility (AddInutil.exe) which could be a sign of potential abuse of the binary to proxy execution via a custom Addins.Store payload.
references:
- https://www.blue-prints.blog/content/blog/posts/lolbin/addinutil-lolbas.html
author: Michael McKinley (@McKinleyMike), Tony Latteri (@TheLatteri)
date: 2023-09-18
tags:
- attack.stealth
- attack.t1218
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith: '\addinutil.exe'
filter_main_werfault:
Image|endswith:
- ':\Windows\System32\conhost.exe'
- ':\Windows\System32\werfault.exe'
- ':\Windows\SysWOW64\werfault.exe'
condition: selection and not 1 of filter_main_*
falsepositives:
- Unknown
level: mediumFalse positives
- Unknown