APT PRIVATELOG Image Load Pattern


Description

Detects an image load pattern as seen when a tool named PRIVATELOG is used and rarely observed under legitimate circumstances

Query · sigma

selection:
  Image|endswith: \svchost.exe
  ImageLoaded|endswith: \clfsw32.dll
condition: selection

Known false positives

  • Rarely observed
Raw source APT PRIVATELOG Image Load Pattern · Sigma
Esc
Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified.
title: APT PRIVATELOG Image Load Pattern
id: 33a2d1dd-f3b0-40bd-8baf-7974468927cc
status: test
description: Detects an image load pattern as seen when a tool named PRIVATELOG is used and rarely observed under legitimate circumstances
references:
    - https://web.archive.org/web/20210901184449/https://www.fireeye.com/blog/threat-research/2021/09/unknown-actor-using-clfs-log-files-for-stealth.html
author: Florian Roth (Nextron Systems)
date: 2021-09-07
modified: 2022-10-09
tags:
    - attack.privilege-escalation
    - attack.stealth
    - attack.t1055
    - detection.emerging-threats
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image|endswith: '\svchost.exe'
        ImageLoaded|endswith: '\clfsw32.dll'
    condition: selection
falsepositives:
    - Rarely observed
level: high

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.