Uncommon System Information Discovery Via Wmic.EXE — Sigma Rule

Rule metadata and linked tags

Author: TropChaud. Source status: test; severity: medium. Source dates: 2023-01-26 / 2023-12-19.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 72240ed84eabe5671ef15607b5c7314a1520eb73496303514529cd4e2718a169

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Uncommon System Information Discovery Via Wmic.EXE
id: 9d5a1274-922a-49d0-87f3-8c653483b909
related:
    - id: d85ecdd7-b855-4e6e-af59-d9c78b5b861e
      type: derived
status: test
description: |
    Detects the use of the WMI command-line (WMIC) utility to identify and display various system information,
    including OS, CPU, GPU, and disk drive names; memory capacity; display resolution; and baseboard, BIOS,
    and GPU driver products/versions.
    Some of these commands were used by Aurora Stealer in late 2022/early 2023.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/a2ccd19c37d0278b4ffa8583add3cf52060a5418/atomics/T1082/T1082.md#atomic-test-25---system-information-discovery-with-wmic
    - https://nwgat.ninja/getting-system-information-with-wmic-on-windows/
    - https://blog.sekoia.io/aurora-a-rising-stealer-flying-under-the-radar
    - https://blog.cyble.com/2023/01/18/aurora-a-stealer-using-shapeshifting-tactics/
    - https://app.any.run/tasks/a6aa0057-82ec-451f-8f99-55650ca537da/
    - https://www.virustotal.com/gui/file/d6f6bc10ae0e634ed4301d584f61418cee18e5d58ad9af72f8aa552dc4aaeca3/behavior
author: TropChaud
date: 2023-01-26
modified: 2023-12-19
tags:
    - attack.discovery
    - attack.t1082
logsource:
    category: process_creation
    product: windows
detection:
    selection_wmic:
        - Description: 'WMI Commandline Utility'
        - OriginalFileName: 'wmic.exe'
        - Image|endswith: '\WMIC.exe'
    selection_commands:
        CommandLine|contains:
            - 'LOGICALDISK get Name,Size,FreeSpace'
            - 'os get Caption,OSArchitecture,Version'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium
simulation:
    - type: atomic-red-team
      name: System Information Discovery with WMIC
      technique: T1082
      atomic_guid: 8851b73a-3624-4bf7-8704-aa312411565c
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_wmic_recon_system_info_uncommon/info.yml

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/a2ccd19c37d0278b4ffa8583add3cf52060a5418/atomics/T1082/T1082.md#atomic-test-25---system-information-discovery-with-wmic
• https://nwgat.ninja/getting-system-information-with-wmic-on-windows/
• https://blog.sekoia.io/aurora-a-rising-stealer-flying-under-the-radar
• https://blog.cyble.com/2023/01/18/aurora-a-stealer-using-shapeshifting-tactics/
• https://app.any.run/tasks/a6aa0057-82ec-451f-8f99-55650ca537da/
• https://www.virustotal.com/gui/file/d6f6bc10ae0e634ed4301d584f61418cee18e5d58ad9af72f8aa552dc4aaeca3/behavior