Possible 7za.DLL Sideloading (via image_load)

title: Possible 7za.DLL Sideloading (via image_load)
id: c56f9a09-dd41-5352-a2d2-3fb1b05125d5
status: stable
description: This rule detects potential DLL sideloading of "7za.dll"
references:
    - https://attack.mitre.org/techniques/T1574/001/
    - https://www.gov.pl/attachment/ee91f24d-3e67-436d-aa50-7fa56acf789d
author: Huntrule Team
date: 2026-05-05
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1574.001
logsource:
    category: image_load
    product: windows
detection:
    selection:
        ImageLoaded|endswith: '\7za.dll'
    filter_main_legit_path:
        Image|startswith:
            - 'C:\Program Files (x86)\'
            - 'C:\Program Files\'
        ImageLoaded|startswith:
            - 'C:\Program Files (x86)\'
            - 'C:\Program Files\'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: low