SigmaHQ/rules/windows/process_creation/win_remote_time_discovery.yml

title: Discovery of a System Time
id: b243b280-65fe-48df-ba07-6ddea7646427
description: "Identifies use of various commands to query a systems time. This technique may be used before executing a scheduled task or to discover the time zone of a target system."
status: experimental
author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
date: 2019/10/24
modified: 2019/11/11
references:
    - https://eqllib.readthedocs.io/en/latest/analytics/fcdb99c2-ac3c-4bde-b664-4b336329bed2.html
    - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1124/T1124.md
tags:
    - attack.discovery
    - attack.t1124
logsource:
    category: process_creation
    product: windows
detection:
    selection:
      - Image|endswith: 
            - '\net.exe'
            - '\net1.exe'
        CommandLine|contains: 'time'
      - Image|endswith: '\w32tm.exe'
        CommandLine|contains: 'tz'
      - Image|endswith: '\powershell.exe'
        CommandLine|contains: 'Get-Date'
    condition: selection
falsepositives:
    - Legitimate use of the system utilities to discover system time for legitimate reason
level: low