Title:
Always Install Elevated Windows Installer
Status:
test
Description:Detects Windows Installer service (msiexec.exe) trying to install MSI packages with SYSTEM privilege
References:
-https://image.slidesharecdn.com/kheirkhabarovoffzonefinal-181117201458/95/hunting-for-privilege-escalation-in-windows-environment-48-638.jpg
Author: Teymur Kheirkhabarov (idea), Mangatas Tondang (rule), oscd.community
Date: 2020-10-13
modified:2024-12-01
Tags:
- -'attack.privilege-escalation'
- -'attack.t1548.002'
Logsource:
- product: windows
- category: process_creation
Detection:
selection_user:
User|contains:
-'AUTHORI'
-'AUTORI'
selection_image_1:
Image|contains|all:
-'\Windows\Installer\'
-'msi'
Image|endswith:
'tmp'
selection_image_2:
Image|endswith:
'\msiexec.exe'
IntegrityLevel:
-'System'
-'S-1-16-16384'
filter_installer:
ParentImage:
'C:\Windows\System32\services.exe'
filter_repair:
CommandLine|endswith:
'\system32\msiexec.exe /V'
ParentCommandLine|endswith:
'\system32\msiexec.exe /V'
filter_sophos:
ParentImage|startswith:
'C:\ProgramData\Sophos\'
filter_avira:
ParentImage|startswith:
'C:\ProgramData\Avira\'
filter_avast:
ParentImage|startswith:
-'C:\Program Files\Avast Software\'
-'C:\Program Files (x86)\Avast Software\'
filter_google_update:
ParentImage|startswith:
-'C:\Program Files\Google\Update\'
-'C:\Program Files (x86)\Google\Update\'
condition:
1 of selection_image_* and selection_user and not 1 of filter_*
Falsepositives:
-System administrator usage
-Anti virus products
-WindowsApps located in "C:\Program Files\WindowsApps\"
Level:
medium
