Forest Blizzard APT - Process Creation Activity

title: Forest Blizzard APT - Process Creation Activity
id: 07db928c-8632-488e-ac7d-3db847489175
status: experimental
description: |
    Detects the execution of specific processes and command line combination.
    These were seen being created by Forest Blizzard as described by MSFT.
references:
    - https://www.microsoft.com/en-us/security/blog/2024/04/22/analyzing-forest-blizzards-custom-post-compromise-tool-for-exploiting-cve-2022-38028-to-obtain-credentials/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2024-04-23
modified: 2025-01-22
tags:
    - attack.execution
    - detection.emerging-threats
    - attack.stealth
logsource:
    category: process_creation
    product: windows
detection:
    selection_hashes:
        Hashes|contains:
            - 'SHA256=6b311c0a977d21e772ac4e99762234da852bbf84293386fbe78622a96c0b052f'
            - 'SHA256=c60ead92cd376b689d1b4450f2578b36ea0bf64f3963cfa5546279fa4424c2a5'
    selection_schtasks_create:
        Image|endswith: '\schtasks.exe'
        CommandLine|contains|all:
            - 'Create'
            - '/RU'
            - 'SYSTEM'
            - '\Microsoft\Windows\WinSrv'
        CommandLine|contains:
            - 'servtask.bat'
            - 'execute.bat'
            - 'doit.bat'
    selection_schtasks_delete:
        Image|endswith: '\schtasks.exe'
        CommandLine|contains|all:
            - 'Delete'
            - '/F '
            - '\Microsoft\Windows\WinSrv'
    selection_powershell:
        CommandLine|contains|all:
            - 'Get-ChildItem'
            - '.save'
            - 'Compress-Archive -DestinationPath C:\ProgramData\'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: high