Convert indexed Sigma rules into analyst-ready detections.

title: Potential Exploitation of GoAnywhere MFT Vulnerability
id: 6c76b3d0-afe4-4870-9443-ffe6773c5fef
status: experimental
description: |
    Detects suspicious command execution by child processes of the GoAnywhere Managed File Transfer (MFT) application, which may indicate exploitation such as CVE-2025-10035.
    This behavior is indicative of post-exploitation activity related to CVE-2025-10035, as observed in campaigns by the threat actor Storm-1175.
references:
    - https://www.microsoft.com/en-us/security/blog/2025/10/06/investigating-active-exploitation-of-cve-2025-10035-goanywhere-managed-file-transfer-vulnerability/
author: MSFT (idea), Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-10-07
tags:
    - attack.initial-access
    - attack.t1190
    - attack.execution
    - attack.t1059.001
    - attack.persistence
    - attack.t1133
    - detection.emerging-threats
    - cve.2025-10035
logsource:
    category: process_creation
    product: windows
detection:
    # Detects the GoAnywhere Tomcat parent process based on path and command line arguments
    selection_parent:
        ParentImage|contains: '\GoAnywhere\tomcat\'
    selection_powershell_img:
        Image|endswith:
            - '\powershell.exe'
            - '\powershell_ise.exe'
            - '\pwsh.exe'
    selection_powershell_cmd:
        - CommandLine|contains|all:
              - 'IEX'
              - 'enc'
              - 'Hidden'
              - 'bypass'
        - CommandLine|re:
              - 'net\s+user'
              - 'net\s+group'
              - 'query\s+session'
        - CommandLine|contains:
              - 'whoami'
              - 'systeminfo'
              - 'dsquery'
              - 'localgroup administrators'
              - 'nltest'
              - 'samaccountname='
              - 'adscredentials'
              - 'o365accountconfiguration'
              - '.DownloadString('
              - '.DownloadFile('
              - 'FromBase64String('
              - 'System.IO.Compression'
              - 'System.IO.MemoryStream'
              - 'curl'
    selection_child_cmd:
        Image|endswith: '\cmd.exe'
        CommandLine|contains:
            - 'powershell'
            - 'whoami'
            - 'net.exe'
            - 'net1.exe'
            - 'rundll32'
            - 'quser'
            - 'nltest'
            - 'curl'
    selection_child_others:
        CommandLine|contains:
            - 'bitsadmin'
            - 'certutil'
            - 'mshta'
            - 'cscript'
            - 'wscript'
    condition: selection_parent and (all of selection_powershell_* or 1 of selection_child_*)
falsepositives:
    - Legitimate administrative scripts or built-in GoAnywhere functions could potentially trigger this rule. Tuning may be required based on normal activity in your environment.
level: high