SigmaHQ/rules/linux/macos_network_sniffing.yml

title: Network Sniffing
id: adc9bcc4-c39c-4f6b-a711-1884017bf043
status: experimental
description: Detects the usage of tooling to sniff network traffic. An adversary may place a network interface into promiscuous mode to passively access data in transit over the network, or use span ports to capture a larger amount of data.
author: Alejandro Ortuno, oscd.community
date: 2020/10/14
references:
  - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1040/T1040.md
logsource:
  category: process_creation
  product: macos
detection:
  selection_1:
    ProcessName|endswith:
      - '/tcpdump'
  selection_2:
    ProcessName|endswith:
      - '/tshark'
  condition: 1 of them
falsepositives:
  - Legitimate administration activities
level: medium
tags:
  - attack.discovery
  - attack.credential_access
  - attack.t1040