Suspicious WinRAR Execution in Non-Standard Folder (via process_creation)

title: Suspicious WinRAR Execution in Non-Standard Folder (via process_creation)
id: eac63b70-db13-5245-9ea5-af497018ad45
status: stable
description: This rule detects an anomalous WinRAR execution in a folder which is not the default installation folder
references:
    - https://attack.mitre.org/techniques/T1560/001/
    - https://twitter.com/cyb3rops/status/1460978167628406785
author: Huntrule Team
date: 2026-04-25
tags:
    - attack.collection
    - attack.t1560.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith:
              - '\rar.exe'
              - '\winrar.exe'
        - Description:
              - 'Command line RAR'
              - 'WinRAR'
    filter_main_unrar:
        Image|endswith: '\UnRAR.exe'
    filter_main_path:
        Image|contains:
            - ':\Program Files (x86)\WinRAR\'
            - ':\Program Files\WinRAR\'
    filter_optional_temp:
        Image|contains: ':\Windows\Temp\'
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - Unknown
level: medium