Sigma Rule Library

Computer System Reconnaissance Via Wmic.EXE

Detects execution of wmic utility with the "computersystem" flag in order to obtain information about the machine such as the domain, username, model, etc.

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Detection logic

selection_img

- Image|endswith: \wmic.exe
- OriginalFileName: wmic.exe

selection_cli

CommandLine|contains: computersystem

Condition

all of selection_*

Raw YAML

title: Computer System Reconnaissance Via Wmic.EXE
id: 9d7ca793-f6bd-471c-8d0f-11e68b2f0d2f
status: test
description: Detects execution of wmic utility with the "computersystem" flag in order to obtain information about the machine such as the domain, username, model, etc.
references:
    - https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-09-08
modified: 2023-02-14
tags:
    - attack.discovery
    - attack.execution
    - attack.t1047
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - Image|endswith: '\wmic.exe'
        - OriginalFileName: 'wmic.exe'
    selection_cli:
        CommandLine|contains: 'computersystem'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_wmic_recon_computersystem/info.yml

False positives

  • Unknown

References

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