Possible Network Sniffing Behavior Via Network Utilities (via process_creation)

title: Possible Network Sniffing Behavior Via Network Utilities (via process_creation)
id: 06d09ef3-76f2-57eb-9fdc-23fb611dd3f1
status: stable
description: This rule 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://attack.mitre.org/techniques/T1040/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1040/T1040.md
author: Huntrule Team
date: 2026-06-06
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:
    - Unknown
level: medium