Arbitrary File Download Via MSEDGE_PROXY.EXE — Sigma Rule

Rule metadata and linked tags

Author: Swachchhanda Shrawan Poudel. Source status: test; severity: medium. Source dates: 2023-11-09 / not supplied.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 27aeb6b26a460562197c099605582004d48d699b6d8fac607745ea93431ac207

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Arbitrary File Download Via MSEDGE_PROXY.EXE
id: e84d89c4-f544-41ca-a6af-4b92fd38b023
status: test
description: Detects usage of "msedge_proxy.exe" to download arbitrary files
references:
    - https://lolbas-project.github.io/lolbas/Binaries/msedge_proxy/
author: Swachchhanda Shrawan Poudel
date: 2023-11-09
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

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://lolbas-project.github.io/lolbas/Binaries/msedge_proxy/