35 lines
911 B
YAML
35 lines
911 B
YAML
|
|
title: PowerShell DownloadFile
|
|
author: Florian Roth
|
|
date: 2020/08/28
|
|
description: Detects the execution of powershell, a WebClient object creation and
|
|
the invocation of DownloadFile in a single command line
|
|
detection:
|
|
SELECTION_1:
|
|
EventID: 1
|
|
SELECTION_2:
|
|
CommandLine: '*powershell*'
|
|
SELECTION_3:
|
|
CommandLine: '*.DownloadFile*'
|
|
SELECTION_4:
|
|
CommandLine: '*System.Net.WebClient*'
|
|
condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4)
|
|
falsepositives:
|
|
- Unknown
|
|
id: 8f70ac5f-1f6f-4f8e-b454-db19561216c5
|
|
level: high
|
|
logsource:
|
|
category: process_creation
|
|
product: windows
|
|
references:
|
|
- https://www.fireeye.com/blog/threat-research/2020/03/apt41-initiates-global-intrusion-campaign-using-multiple-exploits.html
|
|
status: experimental
|
|
tags:
|
|
- attack.execution
|
|
- attack.t1059.001
|
|
- attack.t1086
|
|
- attack.command_and_control
|
|
- attack.t1104
|
|
- attack.t1105
|
|
ruletype: SIGMA
|