
title: Findstr Launching .lnk File
author: Trent Liffick
date: 2020/05/01
description: Detects usage of findstr to identify and execute a lnk file as seen within
  the HHS redirect attack
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    Image: '*\findstr.exe'
  SELECTION_3:
    CommandLine: '*.lnk'
  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
falsepositives:
- unknown
fields:
- Image
- CommandLine
- ParentCommandLine
id: 33339be3-148b-4e16-af56-ad16ec6c7e7b
level: medium
logsource:
  category: process_creation
  product: windows
modified: 2020/08/30
references:
- https://www.bleepingcomputer.com/news/security/hhsgov-open-redirect-used-by-coronavirus-phishing-to-spread-malware/
status: experimental
tags:
- attack.defense_evasion
- attack.t1036
- attack.t1202
- attack.t1027.003
ruletype: SIGMA
