Detection rules › Sigma
TAIDOOR RAT DLL Load
Detects specific process characteristics of Chinese TAIDOOR RAT malware load
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Privilege Escalation | |
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
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
Stages and Predicates
Stage 0: condition
selection1 or ( selection2a and selection2b )Stage 1: selection1
selection1:
CommandLine|contains:
- 'dll,MyStart'
- 'dll MyStart'
Stage 2: selection2a
selection2a:
CommandLine|endswith: ' MyStart'
Stage 3: selection2b
selection2b:
CommandLine|contains: 'rundll32.exe'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | ends_with |
| field:"CommandLine" kind:ends_with value:" MyStart" |
CommandLine | match |
| field:"CommandLine" kind:match |