sigmamediumHunting

Launch-VsDevShell.PS1 Proxy Execution

Detects the use of the 'Launch-VsDevShell.ps1' Microsoft signed script to execute commands.

MITRE ATT&CK

defense-evasion

Detection Query

selection_script:
  CommandLine|contains: Launch-VsDevShell.ps1
selection_flags:
  CommandLine|contains:
    - "VsWherePath "
    - "VsInstallationPath "
condition: all of selection_*

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2022-08-19

Data Sources

windowsProcess Creation Events

Platforms

windows

References

https://twitter.com/nas_bench/status/1535981653239255040

Tags

attack.defense-evasionattack.t1216.001

Raw Content

title: Launch-VsDevShell.PS1 Proxy Execution
id: 45d3a03d-f441-458c-8883-df101a3bb146
status: test
description: Detects the use of the 'Launch-VsDevShell.ps1' Microsoft signed script to execute commands.
references:
    - https://twitter.com/nas_bench/status/1535981653239255040
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-19
tags:
    - attack.defense-evasion
    - attack.t1216.001
logsource:
    category: process_creation
    product: windows
detection:
    selection_script:
        CommandLine|contains: 'Launch-VsDevShell.ps1'
    selection_flags:
        CommandLine|contains:
            - 'VsWherePath '
            - 'VsInstallationPath '
    condition: all of selection_*
falsepositives:
    - Legitimate usage of the script by a developer
level: medium