Suspicious Vsls-Agent Command With AgentExtensionPath Load

 Original Source: [Sigma source]
Title: Suspicious Vsls-Agent Command With AgentExtensionPath Load
Status: test
Description:Detects Microsoft Visual Studio vsls-agent.exe lolbin execution with a suspicious library load using the --agentExtensionPath parameter
References:
  -https://twitter.com/bohops/status/1583916360404729857
Author: bohops
Date: 2022-10-30
modified:None
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:
  -False positives depend on custom use of vsls-agent.exe
Level: medium