Mstsc.EXE Execution With Local RDP File

testlow
log source: windows · process_creationauthor Nasreddine Bencherchali (Nextron Systems), Christopher Peacock @securepeacockdate 2023-04-18
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description

What this is, in brief.

Detects potential RDP connection via Mstsc using a local ".rdp" file

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tags

attack.command-and-controlattack.t1219.002
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rule source (YAML)

title: Mstsc.EXE Execution With Local RDP File
id: 5fdce3ac-e7f9-4ecd-a3aa-a4d78ebbf0af
status: test
description: Detects potential RDP connection via Mstsc using a local ".rdp" file
references:
    - https://www.blackhillsinfosec.com/rogue-rdp-revisiting-initial-access-methods/
    - https://web.archive.org/web/20230726144748/https://blog.thickmints.dev/mintsights/detecting-rogue-rdp/
author: Nasreddine Bencherchali (Nextron Systems), Christopher Peacock @securepeacock
date: 2023-04-18
modified: 2023-04-30
tags:
    - attack.command-and-control
    - attack.t1219.002
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\mstsc.exe'
        - OriginalFileName: 'mstsc.exe'
    selection_cli:
        CommandLine|endswith:
            - '.rdp'
            - '.rdp"'
    filter_optional_wsl:
        ParentImage: 'C:\Windows\System32\lxss\wslhost.exe'
        CommandLine|contains: 'C:\ProgramData\Microsoft\WSL\wslg.rdp'
    condition: all of selection_* and not 1 of filter_optional_*
falsepositives:
    - Likely with legitimate usage of ".rdp" files
level: low
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detects techniques (1)

ATT&CK techniques this enables or maps to.

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references

External citations — patches, advisories, analysis.