Potential Network Sniffing Activity Using Network Tools

Title: Potential Network Sniffing Activity Using Network Tools
Status: test
Description:Detects potential network sniffing via use of network tools such as "tshark", "windump". 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, Nasreddine Bencherchali (Nextron Systems)
Date: 2019-10-21
modified:2023-02-20
Tags:

• -'attack.credential-access'
• -'attack.discovery'
• -'attack.t1040'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection_tshark:
    Image|endswith: '\tshark.exe'
    CommandLine|contains: '-i'
  selection_windump:
    Image|endswith: '\windump.exe'
  condition:1 of selection_*
Falsepositives:
  -Legitimate administration activity to troubleshoot network issues
Level: medium