Tanaka Zakku
32 lines
1009 B
YAML
32 lines
1009 B
YAML
title: Outlook C2 Macro Creation
|
|
author: '@ScoubiMtl'
|
|
date: 2021/04/05
|
|
description: Detects the creation of a macro file for Outlook. Goes with win_outlook_c2_registry_key.
|
|
VbaProject.OTM is explicitly mentioned in T1137. Particularly interesting if both
|
|
events Registry & File Creation happens at the same time.
|
|
detection:
|
|
SELECTION_1:
|
|
EventID: 11
|
|
SELECTION_2:
|
|
TargetFilename: '*\Microsoft\Outlook\VbaProject.OTM'
|
|
condition: (SELECTION_1 and SELECTION_2)
|
|
falsepositives:
|
|
- User genuinly creates a VB Macro for their email
|
|
id: 8c31f563-f9a7-450c-bfa8-35f8f32f1f61
|
|
level: medium
|
|
logsource:
|
|
category: file_event
|
|
product: windows
|
|
references:
|
|
- https://www.mdsec.co.uk/2020/11/a-fresh-outlook-on-mail-based-persistence/
|
|
status: experimental
|
|
tags:
|
|
- attack.persistence
|
|
- attack.command_and_control
|
|
- attack.t1137
|
|
- attack.t1008
|
|
- attack.t1546
|
|
yml_filename: win_outlook_c2_macro_creation.yml
|
|
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/file_event
|
|
|