Detection rules › Sigma
Potential LethalHTA Technique Execution
Detects potential LethalHTA technique where the "mshta.exe" is spawned by an "svchost.exe" process
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| 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: Potential LethalHTA Technique Execution
id: ed5d72a6-f8f4-479d-ba79-02f6a80d7471
status: test
description: Detects potential LethalHTA technique where the "mshta.exe" is spawned by an "svchost.exe" process
references:
- https://codewhitesec.blogspot.com/2018/07/lethalhta.html
author: Markus Neis
date: 2018-06-07
modified: 2023-02-07
tags:
- attack.stealth
- attack.t1218.005
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith: '\svchost.exe'
Image|endswith: '\mshta.exe'
condition: selection
falsepositives:
- Unknown
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ParentImage|endswith: '\svchost.exe'
Image|endswith: '\mshta.exe'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Image | ends_with |
| field:"Image" kind:ends_with value:"\mshta.exe" |
ParentImage | ends_with |
| field:"ParentImage" kind:ends_with value:"\svchost.exe" |