Suspicious Invoke-Item From Mount-DiskImage (via ps_script)

title: Suspicious Invoke-Item From Mount-DiskImage (via ps_script)
id: eb792512-bcd0-5c5f-a3ff-da8a6123292a
status: stable
description: This rule detects threat actors may misuse container files such as disk image (.iso, .vhd) file formats to deliver hostile payloads that may not be tagged with MOTW.
references:
    - https://attack.mitre.org/techniques/T1553/005/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.005/T1553.005.md#atomic-test-2---mount-an-iso-image-and-run-executable-from-the-iso
    - https://learn.microsoft.com/en-us/powershell/module/storage/mount-diskimage?view=windowsserver2022-ps
author: Huntrule Team
date: 2026-04-25
tags:
    - attack.defense-impairment
    - attack.t1553.005
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains|all:
            - 'Mount-DiskImage '
            - '-ImagePath '
            - Get-Volume
            - '.DriveLetter'
            - 'invoke-item '
            - '):\'
    condition: selection
falsepositives:
    - Unknown
level: medium