Suspicious Execute Invoke-command on Remote Host (via ps_script)

This rule detects threat actors may use Valid Accounts to interact with remote systems using Windows Remote Management (WinRM). The adversary may then perform actions as the logged-on user.

SigmamediumWindowsv1
sigma
title: Suspicious Execute Invoke-command on Remote Host (via ps_script)
id: 24498a00-a3b3-590b-88ac-d2e56f0a51e9
status: stable
description: This rule detects threat actors may use Valid Accounts to interact with remote systems using Windows Remote Management (WinRM). The adversary may then perform actions as the logged-on user.
references:
    - https://attack.mitre.org/techniques/T1021/006/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.006/T1021.006.md#atomic-test-2---invoke-command
    - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/invoke-command?view=powershell-7.4
author: Huntrule Team
date: 2026-07-05
tags:
    - attack.lateral-movement
    - attack.t1021.006
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_cmdlet:
        ScriptBlockText|contains|all:
            - 'invoke-command '
            - ' -ComputerName '
    condition: selection_cmdlet
falsepositives:
    - Unknown
level: medium

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.