title: Ncat Execution
author: frack113
date: 2021/07/21
description: Adversaries may use a non-application layer protocol for communication
  between host and C2 server or among infected hosts within a network
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    Image:
    - '*\ncat.exe'
  SELECTION_3:
    CommandLine:
    - '* -lvp *'
    - '* -l --proxy-type http *'
    - '* --exec cmd.exe *'
    - '* -vnl --exec *'
  condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3))
falsepositives:
- Legitimate ncat use
id: e31033fc-33f0-4020-9a16-faf9b31cbf08
level: high
logsource:
  category: process_creation
  product: windows
references:
- https://nmap.org/ncat/
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1095/T1095.md
status: experimental
tags:
- attack.command_and_control
- attack.t1095
ruletype: SIGMA