sigmaDRL-1.1from SigmaHQ/sigma

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

Quality

100

FP risk

—

Forks

Views

ATT&CK techniques

T1574.001

Rule sourcerules/windows/file/file_event/file_event_win_dll_sideloading_space_path.yml

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