IMPORTANT: No additional bug fixes or documentation updates will be released for this version.
Network Sniffing via Tcpdump
editNetwork Sniffing via Tcpdump
editThe Tcpdump program ran on a Linux host. Tcpdump is a network monitoring or packet sniffing tool that can be used to capture insecure credentials or data in motion. Sniffing can also be used to discover details of network services as a prelude to lateral movement or defense evasion.
Rule type: query
Rule indices:
- auditbeat-*
Severity: low
Risk score: 21
Runs every: 5 minutes
Searches indices from: now-6m (Date Math format, see also Additional look-back time)
Maximum signals per execution: 100
Tags:
- Elastic
- Linux
Version: 2 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 7.7.0
Potential false positives
editSome normal use of this command may originate from server or network administrators engaged in network troubleshooting.
Rule query
editprocess.name:tcpdump and event.action:executed
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
-
Technique:
- Name: Network Sniffing
- ID: T1040
- Reference URL: https://attack.mitre.org/techniques/T1040/
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: Network Sniffing
- ID: T1040
- Reference URL: https://attack.mitre.org/techniques/T1040/
Rule version history
edit- Version 2 (7.7.0 release)
-
Updated query, changed from:
process.name: tcpdump and event.action:executed