TAIDOOR RAT DLL Load

Description

Detects specific process characteristics of Chinese TAIDOOR RAT malware load

Query · sigma

selection1:
  CommandLine|contains:
  - dll,MyStart
  - dll MyStart
selection2a:
  CommandLine|endswith: ' MyStart'
selection2b:
  CommandLine|contains: rundll32.exe
condition: selection1 or ( selection2a and selection2b )

Known false positives

  • Unknown
Raw source TAIDOOR RAT DLL Load · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: TAIDOOR RAT DLL Load
id: d1aa3382-abab-446f-96ea-4de52908210b
status: test
description: Detects specific process characteristics of Chinese TAIDOOR RAT malware load
references:
    - https://us-cert.cisa.gov/ncas/analysis-reports/ar20-216a
author: Florian Roth (Nextron Systems)
date: 2020-07-30
modified: 2021-11-27
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1055.001
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection1:
        CommandLine|contains:
            - 'dll,MyStart'
            - 'dll MyStart'
    selection2a:
        CommandLine|endswith: ' MyStart'
    selection2b:
        CommandLine|contains: 'rundll32.exe'
    condition: selection1 or ( selection2a and selection2b )
falsepositives:
    - Unknown
level: high

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