RunDLL32 Spawning Explorer

 Original Source: [Sigma source]
Title: RunDLL32 Spawning Explorer
Status: test
Description:Detects RunDLL32.exe spawning explorer.exe as child, which is very uncommon, often observes Gamarue spawning the explorer.exe process in an unusual way
References:
  -https://redcanary.com/blog/intelligence-insights-november-2021/
Author: elhoim, CD_ROM_
Date: 2022-04-27
modified:2022-05-25
Tags:
  • -'attack.stealth'
  • -'attack.t1218.011'
Logsource:
  • category: process_creation
  • product: windows
Detection:
  selection:
    ParentImage|endswith: '\rundll32.exe'
    Image|endswith: '\explorer.exe'
  filter:
    ParentCommandLine|contains: '\shell32.dll,Control_RunDLL'
  condition:selection and not filter
Falsepositives:
  -Unknown
Level: high