Suspicious File Created In PerfLogs (via file_event)

title: Suspicious File Created In PerfLogs (via file_event)
id: 816db6d1-b8c1-5e4e-b16d-7649b9069d2a
status: stable
description: This rule detects anomalous file based on their extension being created in "C:\PerfLogs\". Note that this directory mostly contains ".etl" files
references:
    - https://attack.mitre.org/techniques/T1059/
    - Internal Research
    - https://labs.withsecure.com/publications/fin7-target-veeam-servers
author: Huntrule Team
date: 2026-07-25
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|startswith: 'C:\PerfLogs\'
        TargetFilename|endswith:
            - '.7z'
            - '.bat'
            - '.bin'
            - '.chm'
            - '.dll'
            - '.exe'
            - '.hta'
            - '.lnk'
            - '.ps1'
            - '.psm1'
            - '.py'
            - '.scr'
            - '.sys'
            - '.vbe'
            - '.vbs'
            - '.zip'
    condition: selection
falsepositives:
    - Unknown
level: medium