Potentially Suspicious Event Viewer Child Process

Title: Potentially Suspicious Event Viewer Child Process
Status: test
Description:Detects uncommon or suspicious child processes of "eventvwr.exe" which might indicate a UAC bypass attempt
References:
  -https://enigma0x3.net/2016/08/15/fileless-uac-bypass-using-eventvwr-exe-and-registry-hijacking/
  -https://www.hybrid-analysis.com/sample/e122bc8bf291f15cab182a5d2d27b8db1e7019e4e96bb5cdbd1dfe7446f3f51f?environmentId=100
Author: Florian Roth (Nextron Systems)
Date: 2017-03-19
modified:2023-09-28
Tags:

• -'attack.privilege-escalation'
• -'attack.t1548.002'
• -'car.2019-04-001'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection:
    ParentImage|endswith: '\eventvwr.exe'
  filter_main_generic:
    Image|endswith:
      -':\Windows\System32\mmc.exe'
      -':\Windows\System32\WerFault.exe'
      -':\Windows\SysWOW64\WerFault.exe'

  condition:selection and not 1 of filter_main_*
Falsepositives:
  -Unknown
Level: high