29 lines
842 B
YAML
29 lines
842 B
YAML
title: Invoke-Obfuscation VAR+ Launcher
|
|
author: Jonathan Cheong, oscd.community
|
|
date: 2020/10/15
|
|
description: Detects Obfuscated use of Environment Variables to execute PowerShell
|
|
detection:
|
|
SELECTION_1:
|
|
EventID: 1
|
|
SELECTION_2:
|
|
CommandLine|re: .*cmd.{0,5}(?:\/c|\/r)(?:\s|)\"set\s[a-zA-Z]{3,6}.*(?:\{\d\}){1,}\\\"\s+?\-f(?:.*\)){1,}.*\"
|
|
condition: (SELECTION_1 and SELECTION_2)
|
|
falsepositives:
|
|
- Unknown
|
|
id: 27aec9c9-dbb0-4939-8422-1742242471d0
|
|
level: high
|
|
logsource:
|
|
category: process_creation
|
|
product: windows
|
|
references:
|
|
- https://github.com/Neo23x0/sigma/issues/1009
|
|
status: experimental
|
|
tags:
|
|
- attack.defense_evasion
|
|
- attack.t1027
|
|
- attack.execution
|
|
- attack.t1059.001
|
|
yml_filename: win_invoke_obfuscation_var.yml
|
|
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
|
|
|