Suspicious Network Tool Launched Inside A Containeredit

This rule detects commonly abused network utilities running inside a container. Network utilities like nc, nmap, dig, tcpdump, ngrep, telnet, mitmproxy, zmap can be used for malicious purposes such as network reconnaissance, monitoring, or exploitation, and should be monitored closely within a container.

Rule type: eql

Rule indices:

  • logs-cloud_defend*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None


  • Data Source: Elastic Defend for Containers
  • Domain: Container
  • OS: Linux
  • Use Case: Threat Detection
  • Tactic: Discovery
  • Tactic: Command and Control
  • Tactic: Reconnaissance

Version: 2

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

process where "*" and event.type== "start" and
( ("nc", "ncat", "nmap", "dig", "nslookup", "tcpdump", "tshark", "ngrep", "telnet", "mitmproxy", "socat", "zmap", "masscan", "zgrab")) or
/*account for tools that execute utilities as a subprocess, in this case the target utility name will appear as a process arg*/
(process.args: ("nc", "ncat", "nmap", "dig", "nslookup", "tcpdump", "tshark", "ngrep", "telnet", "mitmproxy", "socat", "zmap", "masscan", "zgrab"))