SigmaHQ/rules/windows/process_creation/sysmon_apt_muddywater_dnstunnel.yml

title: DNS Tunnel Technique from MuddyWater
id: 36222790-0d43-4fe8-86e4-674b27809543
description: Detecting DNS tunnel activity for Muddywater actor
author: '@caliskanfurkan_'
status: experimental
date: 2020/06/04
references:
    - https://www.virustotal.com/gui/file/5ad401c3a568bd87dd13f8a9ddc4e450ece61cd9ce4d1b23f68ce0b1f3c190b7/
    - https://www.vmray.com/analyses/5ad401c3a568/report/overview.html
tags:
    - attack.command_and_control
    - attack.t1071 # an old one
    - attack.t1071.004
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\powershell.exe'
        ParentImage|endswith:
            - '\excel.exe'
        CommandLine|contains:
            - 'DataExchange.dll'
    condition: selection
falsepositives:
    - Unknown
level: critical