Suspicious Mount-DiskImage (via ps_script)

title: Suspicious Mount-DiskImage (via ps_script)
id: 21c86d4f-925f-5bf6-9f66-f10d727ff7c4
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-1---mount-iso-image
    - https://learn.microsoft.com/en-us/powershell/module/storage/mount-diskimage?view=windowsserver2022-ps
author: Huntrule Team
date: 2026-07-27
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 '
    condition: selection
falsepositives:
    - Unknown
level: low