sigmamediumHunting

Potential DLL Sideloading Via DeviceEnroller.EXE

Detects the use of the PhoneDeepLink parameter to potentially sideload a DLL file that does not exist. This non-existent DLL file is named "ShellChromeAPI.dll". Adversaries can drop their own renamed DLL and execute it via DeviceEnroller.exe using this parameter

MITRE ATT&CK

T1574.001

privilege-escalationpersistencedefense-evasion

Detection Query

selection_img:
  - Image|endswith: \deviceenroller.exe
  - OriginalFileName: deviceenroller.exe
selection_cli:
  CommandLine|contains: /PhoneDeepLink
condition: all of selection_*

Author

@gott_cyber

Created

2022-08-29

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.privilege-escalationattack.persistenceattack.defense-evasionattack.t1574.001

Raw Content

title: Potential DLL Sideloading Via DeviceEnroller.EXE
id: e173ad47-4388-4012-ae62-bd13f71c18a8
related:
    - id: ee4c5d06-3abc-48cc-8885-77f1c20f4451
      type: similar
status: test
description: |
    Detects the use of the PhoneDeepLink parameter to potentially sideload a DLL file that does not exist. This non-existent DLL file is named "ShellChromeAPI.dll".
    Adversaries can drop their own renamed DLL and execute it via DeviceEnroller.exe using this parameter
references:
    - https://mobile.twitter.com/0gtweet/status/1564131230941122561
    - https://strontic.github.io/xcyclopedia/library/DeviceEnroller.exe-24BEF0D6B0ECED36BB41831759FDE18D.html
author: '@gott_cyber'
date: 2022-08-29
modified: 2023-02-04
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.defense-evasion
    - attack.t1574.001
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\deviceenroller.exe'
        - OriginalFileName: 'deviceenroller.exe'
    selection_cli:
        CommandLine|contains: '/PhoneDeepLink'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium