Network Sniffing - Linux

 Original Source: [Sigma source]
Title: Network Sniffing - Linux
Status: test
Description:Network sniffing refers to using the network interface on a system to monitor or capture information sent over a wired or wireless connection. 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.
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1040/T1040.md
Author: Timur Zinniatullin, oscd.community
Date: 2019-10-21
modified:2022-12-18
Tags:
  • -'attack.credential-access'
  • -'attack.discovery'
  • -'attack.t1040'
Logsource:
  • product: linux
  • service: auditd
Detection:
  selection_1:
    type: 'execve'
    a0: 'tcpdump'
    a1: '-c'
    a3|contains: '-i'
  selection_2:
    type: 'execve'
    a0: 'tshark'
    a1: '-c'
    a3: '-i'
  condition:1 of selection_*
Falsepositives:
  -Legitimate administrator or user uses network sniffing tool for legitimate reasons.
Level: low