Suspicious Utility Launched via ProxyChains

This rule monitors for the execution of suspicious linux tools through ProxyChains. ProxyChains is a command-line tool that enables the routing of network connections through intermediary proxies, enhancing anonymity and enabling access to restricted resources. Attackers can exploit the ProxyChains utility to hide their true source IP address, evade detection, and perform malicious activities through a chain of proxy servers, potentially masking their identity and intentions.

Rule type: eql

Rule indices:

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

Version: 2

Rule authors:

Rule license: Elastic License v2

process where host.os.type == "linux" and event.action == "exec" and event.type == "start" and
process.name == "proxychains" and process.args : (
  "ssh", "sshd", "sshuttle", "socat", "iodine", "iodined", "dnscat", "hans", "hans-ubuntu", "ptunnel-ng",
  "ssf", "3proxy", "ngrok", "gost", "pivotnacci", "chisel*", "nmap", "ping", "python*", "php*", "perl", "ruby",
  "lua*", "openssl", "nc", "netcat", "ncat", "telnet", "awk", "java", "telnet", "ftp", "curl", "wget")