32 lines
987 B
YAML
32 lines
987 B
YAML
title: Suspicious Use of CSharp Interactive Console
|
|
author: Michael R. (@nahamike01)
|
|
date: 2020/03/08
|
|
description: Detects the execution of CSharp interactive console by PowerShell
|
|
detection:
|
|
SELECTION_1:
|
|
EventID: 1
|
|
SELECTION_2:
|
|
Image: '*\csi.exe'
|
|
SELECTION_3:
|
|
ParentImage: '*\powershell.exe'
|
|
SELECTION_4:
|
|
OriginalFileName: csi.exe
|
|
condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4)
|
|
falsepositives:
|
|
- Possible depending on environment. Pair with other factors such as net connections,
|
|
command-line args, etc.
|
|
id: a9e416a8-e613-4f8b-88b8-a7d1d1af2f61
|
|
level: high
|
|
logsource:
|
|
category: process_creation
|
|
product: windows
|
|
references:
|
|
- https://redcanary.com/blog/detecting-attacks-leveraging-the-net-framework/
|
|
status: experimental
|
|
tags:
|
|
- attack.execution
|
|
- attack.t1127
|
|
yml_filename: win_susp_use_of_csharp_console.yml
|
|
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
|
|
|