Potential Libvlc.DLL Sideloading

 Original Source: [Sigma source]
Title: Potential Libvlc.DLL Sideloading
Status: test
Description:Detects potential DLL sideloading of "libvlc.dll", a DLL that is legitimately used by "VLC.exe"
References:
  -https://www.trendmicro.com/en_us/research/23/c/earth-preta-updated-stealthy-strategies.html
  -https://hijacklibs.net/entries/3rd_party/vlc/libvlc.html
Author: X__Junior
Date: 2023-04-17
modified:None
Tags:
  • -'attack.persistence'
  • -'attack.privilege-escalation'
  • -'attack.execution'
  • -'attack.stealth'
  • -'attack.t1574.001'
Logsource:
  • category: image_load
  • product: windows
Detection:
  selection:
    ImageLoaded|endswith: '\libvlc.dll'
  filter_main_vlc:
    ImageLoaded|startswith:
      -'C:\Program Files (x86)\VideoLAN\VLC\'
      -'C:\Program Files\VideoLAN\VLC\'

  condition:selection and not 1 of filter_main_*
Falsepositives:
  -False positives are expected if VLC is installed in non-default locations
Level: medium