52 lines
1.5 KiB
YAML
52 lines
1.5 KiB
YAML
title: Suspicious MSHTA Process Patterns
|
|
author: Florian Roth
|
|
date: 2021/07/17
|
|
description: Detects suspicious mshta process patterns
|
|
detection:
|
|
SELECTION_1:
|
|
EventID: 1
|
|
SELECTION_10:
|
|
CommandLine: '*.htm*'
|
|
SELECTION_11:
|
|
CommandLine: '*.hta*'
|
|
SELECTION_12:
|
|
CommandLine: '*mshta.exe'
|
|
SELECTION_13:
|
|
CommandLine: '*mshta'
|
|
SELECTION_2:
|
|
Image: '*\mshta.exe'
|
|
SELECTION_3:
|
|
ParentImage: '*\cmd.exe'
|
|
SELECTION_4:
|
|
ParentImage: '*\powershell.exe'
|
|
SELECTION_5:
|
|
CommandLine: '*\AppData\Local*'
|
|
SELECTION_6:
|
|
CommandLine: '*C:\Windows\Temp*'
|
|
SELECTION_7:
|
|
CommandLine: '*C:\Users\Public*'
|
|
SELECTION_8:
|
|
Image: '*C:\Windows\System32*'
|
|
SELECTION_9:
|
|
Image: '*C:\Windows\SysWOW64*'
|
|
condition: (SELECTION_1 and SELECTION_2 and ((((SELECTION_3 or SELECTION_4) or
|
|
(SELECTION_5 or SELECTION_6 or SELECTION_7)) or not ((SELECTION_8 or SELECTION_9)))
|
|
or not ((SELECTION_10 or SELECTION_11) and (SELECTION_12 or SELECTION_13))))
|
|
falsepositives:
|
|
- Unknown
|
|
id: e32f92d1-523e-49c3-9374-bdb13b46a3ba
|
|
level: high
|
|
logsource:
|
|
category: process_creation
|
|
product: windows
|
|
references:
|
|
- https://en.wikipedia.org/wiki/HTML_Application
|
|
- https://www.echotrail.io/insights/search/mshta.exe
|
|
- https://app.any.run/tasks/34221348-072d-4b70-93f3-aa71f6ebecad/
|
|
status: experimental
|
|
tags:
|
|
- attack.execution
|
|
yml_filename: win_susp_mshta_pattern.yml
|
|
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
|
|
|