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sigmalowHunting

Potential 7za.DLL Sideloading

Detects potential DLL sideloading of "7za.dll"

MITRE ATT&CK

T1574.001
defense-evasionpersistenceprivilege-escalation

Detection Query

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_*

Author

X__Junior

Created

2023-06-09

Data Sources

windowsImage Load Events

Platforms

windows

References

Tags

attack.defense-evasionattack.persistenceattack.privilege-escalationattack.t1574.001
Raw Content
title: Potential 7za.DLL Sideloading
id: 4f6edb78-5c21-42ab-a558-fd2a6fc1fd57
status: test
description: Detects potential DLL sideloading of "7za.dll"
references:
    - https://www.gov.pl/attachment/ee91f24d-3e67-436d-aa50-7fa56acf789d
author: X__Junior
date: 2023-06-09
tags:
    - attack.defense-evasion
    - attack.persistence
    - attack.privilege-escalation
    - 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:
    - Legitimate third party application located in "AppData" may leverage this DLL to offer 7z compression functionality and may generate false positives. Apply additional filters as needed.
level: low