Network Sniffing via Tcpdump

The 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-*
• logs-endpoint.events.*

Rule Severity: low
Risk Score: 21
Runs every:
Searches indices from: now-9m
Maximum alerts per execution: 100
References:

Tags:

• Elastic
• Host
• Linux
• Threat Detection
• Credential Access

Version: 100
Rule authors:

• Elastic

Rule license: Elastic License v2

event.category:process and event.type:(start or process_started) and process.name:tcpdump
		

Framework: MITRE ATT&CK

• 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/

Framework: MITRE ATT&CK

• 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/