WMIC Suspicious Commands

SIGMA detection rule by Micah Babinski · GPL-3.0

Detects suspicious parent-child relationships with the wmiprvse command. Inspired by the 2022 Red Canary Threat Detection report.

title: WMIC Suspicious Commands
id: 9c3367de-94fd-4a46-bc9f-d2943bd32025
status: experimental
description: Detects suspicious parent-child relationships with the wmiprvse command.
    Inspired by the 2022 Red Canary Threat Detection report.
references:
    - https://redcanary.com/threat-detection-report/techniques/windows-management-instrumentation/
author: Micah Babinski
date: 2022/11/03
tags:
    - attack.execution
    - attack.t1047
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\wmiprvse.exe'
        Image|endswith:
            - '\rundll32.exe'
            - '\msbuild.exe'
            - '\powershell.exe'
            - '\cmd.exe'
            - '\mshta.exe'
    condition: selection
falsepositives:
    - Unknown
level: medium

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

223f9fab-7e05-4669-a968-c081e47d089d

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

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Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

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[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

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