
title: Suspicious PowerShell Download
author: Florian Roth
date: 2017/03/05
description: Detects suspicious PowerShell download command
detection:
  SELECTION_1:
    HostApplication: '*System.Net.WebClient*'
  SELECTION_2:
    HostApplication: '*.DownloadFile(*'
  SELECTION_3:
    HostApplication: '*.DownloadString(*'
  condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3))
falsepositives:
- PowerShell scripts that download content from the Internet
id: 3236fcd0-b7e3-4433-b4f8-86ad61a9af2d
level: medium
logsource:
  category: ps_classic_start
  definition: fields have to be extract from event
  product: windows
modified: 2021/10/16
related:
- id: 65531a81-a694-4e31-ae04-f8ba5bc33759
  type: derived
status: experimental
tags:
- attack.execution
- attack.t1059.001
- attack.t1086
ruletype: SIGMA
