36 lines
1.1 KiB
YAML
36 lines
1.1 KiB
YAML
title: Suspicious Code Page Switch
|
|
author: Florian Roth, Jonhnathan Ribeiro, oscd.community
|
|
date: 2019/10/14
|
|
description: Detects a code page switch in command line or batch scripts to a rare
|
|
language
|
|
detection:
|
|
SELECTION_1:
|
|
EventID: 1
|
|
SELECTION_2:
|
|
Image: '*\chcp.com'
|
|
SELECTION_3:
|
|
CommandLine: '* 936'
|
|
SELECTION_4:
|
|
CommandLine: '* 1258'
|
|
condition: (SELECTION_1 and SELECTION_2 and (SELECTION_3 or SELECTION_4))
|
|
falsepositives:
|
|
- Administrative activity (adjust code pages according to your organisation's region)
|
|
fields:
|
|
- ParentCommandLine
|
|
id: c7942406-33dd-4377-a564-0f62db0593a3
|
|
level: medium
|
|
logsource:
|
|
category: process_creation
|
|
product: windows
|
|
modified: 2020/11/28
|
|
references:
|
|
- https://docs.microsoft.com/en-us/windows/win32/intl/code-page-identifiers
|
|
- https://twitter.com/cglyer/status/1183756892952248325
|
|
status: experimental
|
|
tags:
|
|
- attack.t1036
|
|
- attack.defense_evasion
|
|
yml_filename: win_susp_codepage_switch.yml
|
|
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
|
|
|