sigmahighHunting

DLL Search Order Hijackig Via Additional Space in Path

Detects when an attacker create a similar folder structure to windows system folders such as (Windows, Program Files...) but with a space in order to trick DLL load search order and perform a "DLL Search Order Hijacking" attack

MITRE ATT&CK

T1574.001

persistenceprivilege-escalationdefense-evasion

Detection Query

selection:
  TargetFilename|startswith:
    - C:\Windows \
    - C:\Program Files \
    - C:\Program Files (x86) \
  TargetFilename|endswith: .dll
condition: selection

Author

frack113, Nasreddine Bencherchali (Nextron Systems)

Created

2022-07-30

Data Sources

windowsFile Events

Platforms

windows

References

Tags

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

Raw Content

title: DLL Search Order Hijackig Via Additional Space in Path
id: b6f91281-20aa-446a-b986-38a92813a18f
status: test
description: |
    Detects when an attacker create a similar folder structure to windows system folders such as (Windows, Program Files...)
    but with a space in order to trick DLL load search order and perform a "DLL Search Order Hijacking" attack
references:
    - https://twitter.com/cyb3rops/status/1552932770464292864
    - https://www.wietzebeukema.nl/blog/hijacking-dlls-in-windows
author: frack113, Nasreddine Bencherchali (Nextron Systems)
date: 2022-07-30
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.defense-evasion
    - attack.t1574.001
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|startswith:
            - 'C:\Windows \'
            - 'C:\Program Files \'
            - 'C:\Program Files (x86) \'
        TargetFilename|endswith: '.dll'
    condition: selection
falsepositives:
    - Unknown
level: high