Suspicious Execution of Renamed Remote Utilities RAT (RURAT) (via process_creation)

title: Suspicious Execution of Renamed Remote Utilities RAT (RURAT) (via process_creation)
id: 20305d66-8173-5b1e-8eeb-556966c57205
status: stable
description: This rule detects execution of renamed Remote Utilities (RURAT) via Product PE header field
references:
    - https://redcanary.com/blog/misbehaving-rats/
author: Huntrule Team
date: 2026-06-06
tags:
    - attack.collection
    - attack.command-and-control
    - attack.discovery
    - attack.stealth
    - attack.s0592
    - attack.defense-evasion
    - attack.t1219
    - attack.t1036.003
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Product: 'Remote Utilities'
    filter:
        Image|endswith:
            - '\rutserv.exe'
            - '\rfusclient.exe'
    condition: selection and not filter
falsepositives:
    - Unknown
level: medium