osquery-defense-kit/detection/c2/unexpected-icmp-socket.sql

-- Unexpected programs speaking over ICMP (state-based)
--
-- references:
--   *https://attack.mitre.org/techniques/T1095/ (C2: Non-Application Layer Protocol)
--
-- tags: transient state net often
SELECT
  pop.pid,
  p.path,
  p.cmdline
FROM
  process_open_sockets pop
  JOIN processes p ON pop.pid = p.pid
WHERE
  family = 2 -- PF_INET
  AND protocol = 1 -- ICMP
  AND p.name NOT IN ('ping')