Suspicious Vsls-Agent Command With AgentExtensionPath Load (via process_creation)

title: Suspicious Vsls-Agent Command With AgentExtensionPath Load (via process_creation)
id: 5d66d038-6ae0-51cd-a968-ae1609653aa8
status: stable
description: This rule detects Microsoft Visual Studio vsls-agent.exe lolbin execution with an anomalous library load using the --agentExtensionPath parameter
references:
    - https://attack.mitre.org/techniques/T1218/
    - https://twitter.com/bohops/status/1583916360404729857
author: Huntrule Team
date: 2026-05-18
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\vsls-agent.exe'
        CommandLine|contains: '--agentExtensionPath'
    filter:
        CommandLine|contains: 'Microsoft.VisualStudio.LiveShare.Agent.'
    condition: selection and not filter
falsepositives:
    - Unknown
level: medium