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System Network Connections Discovery

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System Network Connections Discovery

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Adversaries may attempt to get a listing of network connections to or from a compromised system.

Rule type: new_terms

Rule indices:

  • logs-endpoint.events.*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

  • Domain: Endpoint
  • OS: Linux
  • OS: macOS
  • Use Case: Threat Detection
  • Tactic: Discovery
  • Rule Type: BBR
  • Data Source: Elastic Defend

Version: 6

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and host.os.type:(linux or macos) and event.type:start and event.action:exec and
process.name:("netstat" or "lsof" or "ss" or "iftop" or "ip" or "nmcli" or "arp" or "route" or "ifconfig" or "netcfg" or "networksetup") and
not (
  process.parent.executable:(
    /Library/Elastic/Agent/* or "/Applications/Docker.app/Contents/MacOS/com.docker.backend" or
    "/opt/NinjaRMMAgent/programfiles/ninjarmm-linagent" or "/usr/local/ASR/Vx/bin/svagents"
  ) or
  process.working_directory:("/var/ossec" or "/usr/lib/check_mk_agent/plugins" or "/opt/microsoft/mdatp/sbin")
)

Framework: MITRE ATT&CKTM

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