title: Suspicious Commandline Escape
id: f0cdd048-82dc-4f7a-8a7a-b87a52b6d0fd
status: test
description: Detects suspicious process that use escape characters
author: juju4
references:
  - https://twitter.com/vysecurity/status/885545634958385153
  - https://twitter.com/Hexacorn/status/885553465417756673
  - https://twitter.com/Hexacorn/status/885570278637678592
  - https://www.fireeye.com/blog/threat-research/2017/06/obfuscation-in-the-wild.html
  - http://www.windowsinspired.com/understanding-the-command-line-string-and-arguments-received-by-a-windows-program/
date: 2018/12/11
modified: 2021/11/27
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    CommandLine|contains:
            # - <TAB>   # no TAB modifier in sigmac yet, so this matches <TAB> (or TAB in elasticsearch backends without DSL queries)
      - 'h^t^t^p'
      - 'h"t"t"p'
  condition: selection
falsepositives:
  - False positives depend on scripts and administrative tools used in the monitored environment
level: low
tags:
  - attack.defense_evasion
  - attack.t1140
