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Indexed Rules

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CLI Versions

Newest: 2.0.2

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Active Rule

Import New Module Via PowerShell CommandLine

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Import New Module Via PowerShell CommandLine

Using Splunk · Default · sigma-cli 2.0.2

Translation controls

Adjust the rule on the left, then regenerate when you want a fresh backend-native query.

BackendSplunkFormatDefaultVersion2.0.2

title: Import New Module Via PowerShell CommandLine
id: 4ad74d01-f48c-42d0-b88c-b31efa4d2262
status: test
description: Detects usage of the "Import-Module" cmdlet in order to add new Cmdlets to the current PowerShell session
references:
    - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/import-module?view=powershell-7.3
    - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/import-module?view=powershell-5.1
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-09
modified: 2023-12-01
tags:
    - attack.execution
    - detection.threat-hunting
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - Image|endswith:
              - '\powershell.exe'
              - '\pwsh.exe'
        - OriginalFileName:
              - 'PowerShell.EXE'
              - 'pwsh.dll'
    selection_cmdlet:
        CommandLine|contains:
            - 'Import-Module '
            - 'ipmo '
    filter_main_vsstudio:
        ParentImage|contains:
            - ':\Program Files\WindowsApps\Microsoft.WindowsTerminal_'
            - ':\Windows\System32\cmd.exe'
        CommandLine|contains|all:
            - ':\Program Files\Microsoft Visual Studio\'
            - 'Tools\Microsoft.VisualStudio.DevShell.dll'
    condition: all of selection_* and not 1 of filter_main_*
falsepositives:
    - Depending on the environement, many legitimate scripts will import modules inline. This rule is targeted for hunting purposes.
level: low

CLI command

Copy the exact command to reproduce this translation locally.

sigma convert --without-pipeline -t splunk -f default rules-threat-hunting/windows/process_creation/proc_creation_win_powershell_import_module.yml