{"id":"f4d3748a-65d1-4806-bd23-e25728081d01","title":"Network Sniffing - Linux","description":"Network sniffing refers to using the network interface on a system to monitor or capture information sent over a wired or wireless connection.\nAn 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.\n","author":"Timur Zinniatullin, oscd.community","status":"test","level":"low","date":"2019-10-21","modified":"2022-12-18","tags":["attack.credential-access","attack.discovery","attack.t1040"],"technique_ids":["T1040"],"logsource":{"product":"linux","service":"auditd"},"falsepositives":["Legitimate administrator or user uses network sniffing tool for legitimate reasons."],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1040/T1040.md"],"source_path":"rules/linux/auditd/execve/lnx_auditd_network_sniffing.yml","source_sha256":"2d5c98de09ecc02736e835c1a8b8c6c071ee2da1becd635ffb1d2fd517980f56","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/linux/auditd/execve/lnx_auditd_network_sniffing.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Network Sniffing - Linux\nid: f4d3748a-65d1-4806-bd23-e25728081d01\nstatus: test\ndescription: |\n  Network sniffing refers to using the network interface on a system to monitor or capture information sent over a wired or wireless connection.\n  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.\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1040/T1040.md\nauthor: Timur Zinniatullin, oscd.community\ndate: 2019-10-21\nmodified: 2022-12-18\ntags:\n    - attack.credential-access\n    - attack.discovery\n    - attack.t1040\nlogsource:\n    product: linux\n    service: auditd\ndetection:\n    selection_1:\n        type: 'execve'\n        a0: 'tcpdump'\n        a1: '-c'\n        a3|contains: '-i'\n    selection_2:\n        type: 'execve'\n        a0: 'tshark'\n        a1: '-c'\n        a3: '-i'\n    condition: 1 of selection_*\nfalsepositives:\n    - Legitimate administrator or user uses network sniffing tool for legitimate reasons.\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1040","id":"T1040","name":"Network Sniffing","page":"techniques/enterprise/T1040/"}],"data_path":"data/detection-rules/f4d3748a-65d1-4806-bd23-e25728081d01.json","kind":"sigma"}