UAC Bypass With Fake DLL


Description

Attempts to load dismcore.dll after dropping it

Query · sigma

selection:
  Image|endswith: \dism.exe
  ImageLoaded|endswith: \dismcore.dll
filter:
  ImageLoaded: C:\Windows\System32\Dism\dismcore.dll
condition: selection and not filter

Known false positives

  • Actions of a legitimate telnet client
Raw source UAC Bypass With Fake DLL · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified.
title: UAC Bypass With Fake DLL
id: a5ea83a7-05a5-44c1-be2e-addccbbd8c03
status: test
description: Attempts to load dismcore.dll after dropping it
references:
    - https://steemit.com/utopian-io/@ah101/uac-bypassing-utility
author: oscd.community, Dmitry Uchakin
date: 2020-10-06
modified: 2022-12-25
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1548.002
    - attack.t1574.001
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image|endswith: '\dism.exe'
        ImageLoaded|endswith: '\dismcore.dll'
    filter:
        ImageLoaded: 'C:\Windows\System32\Dism\dismcore.dll'
    condition: selection and not filter
falsepositives:
    - Actions of a legitimate telnet client
level: high

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