
title: Suspicious Reconnaissance Activity
analysis:
  recommendation: Check if the user that executed the commands is suspicious (e.g.
    service accounts, LOCAL_SYSTEM)
author: Florian Roth, omkar72
date: 2019/01/16
description: Detects suspicious command line activity on Windows systems
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    CommandLine:
    - net group "domain admins" /dom
    - net localgroup administrators
    - net group "enterprise admins" /dom
    - net accounts /dom
  condition: (SELECTION_1 and SELECTION_2)
falsepositives:
- Inventory tool runs
- Penetration tests
- Administrative activity
fields:
- CommandLine
- ParentCommandLine
id: d95de845-b83c-4a9a-8a6a-4fc802ebf6c0
level: medium
logsource:
  category: process_creation
  product: windows
modified: 2021/08/09
references:
- https://redcanary.com/blog/how-one-hospital-thwarted-a-ryuk-ransomware-outbreak/
- https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/
status: experimental
tags:
- attack.discovery
- attack.t1087.001
- attack.t1087.002
- attack.t1087
ruletype: SIGMA
