sigmahighHunting

Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - PowerShell

Detects Obfuscated Powershell via VAR++ LAUNCHER

MITRE ATT&CK

defense-evasionexecution

Detection Query

selection_4104:
  ScriptBlockText|re: (?i)&&set.*(\{\d\}){2,}\\"\s+?-f.*&&.*cmd.*/c
condition: selection_4104

Author

Timur Zinniatullin, oscd.community

Created

2020-10-13

Data Sources

windowsps_script

Platforms

windows

References

https://github.com/SigmaHQ/sigma/issues/1009

Tags

attack.defense-evasionattack.t1027attack.executionattack.t1059.001

Raw Content

title: Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION - PowerShell
id: e54f5149-6ba3-49cf-b153-070d24679126
status: test
description: Detects Obfuscated Powershell via VAR++ LAUNCHER
references:
    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task27)
author: Timur Zinniatullin, oscd.community
date: 2020-10-13
modified: 2024-04-05
tags:
    - attack.defense-evasion
    - attack.t1027
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_4104:
        ScriptBlockText|re: '(?i)&&set.*(\{\d\}){2,}\\"\s+?-f.*&&.*cmd.*/c' # FPs with |\/r
    condition: selection_4104
falsepositives:
    - Unknown
level: high