Suspicious Arbitrary File Download Through MSEDGE_PROXY.EXE (via process_creation)

title: Suspicious Arbitrary File Download Through MSEDGE_PROXY.EXE (via process_creation)
id: 853e4b62-cb2d-5fa7-919d-08fe6ab772a0
status: stable
description: This rule detects use of "msedge_proxy.exe" to download arbitrary files
references:
    - https://attack.mitre.org/techniques/T1218/
    - https://lolbas-project.github.io/lolbas/Binaries/msedge_proxy/
author: Huntrule Team
date: 2026-02-09
tags:
    - attack.execution
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\msedge_proxy.exe'
        - OriginalFileName: 'msedge_proxy.exe'
    selection_cli:
        CommandLine|contains:
            - 'http://'
            - 'https://'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium