sigmaDRL-1.1from SigmaHQ/sigma

Uncommon File Creation By Mysql Daemon Process

Detects the creation of files with scripting or executable extensions by Mysql daemon. Which could be an indicator of "User Defined Functions" abuse to download malware.

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Rule sourcerules/windows/file/file_event/file_event_win_mysqld_uncommon_file_creation.yml

title: Uncommon File Creation By Mysql Daemon Process
id: c61daa90-3c1e-4f18-af62-8f288b5c9aaf
status: test
description: |
    Detects the creation of files with scripting or executable extensions by Mysql daemon.
    Which could be an indicator of "User Defined Functions" abuse to download malware.
references:
    - https://asec.ahnlab.com/en/58878/
    - https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/honeypot-recon-mysql-malware-infection-via-user-defined-functions-udf/
author: Joseph Kamau
date: 2024-05-27
tags:
    - attack.defense-evasion
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image|endswith:
            - \mysqld.exe
            - \mysqld-nt.exe
        TargetFilename|endswith:
            - '.bat'
            - '.dat'
            - '.dll'
            - '.exe'
            - '.ps1'
            - '.psm1'
            - '.vbe'
            - '.vbs'
    condition: selection
falsepositives:
    - Unknown
level: high