osquery-defense-kit/process/parent-missing-from-disk.sql

41 lines
1.1 KiB
SQL

-- Parent PID is not on disk
-- Reveals boopkit if a child is spawned
-- TODO: Make mount namespace aware
SELECT p.name AS child_name,
p.pid AS child_pid,
p.path AS child_path,
p.cmdline AS child_cmd,
p.uid AS child_uid,
p.gid AS child_gid,
p.on_disk AS child_on_disk,
pp.pid AS parent_pid,
pp.name AS parent_name,
pp.path AS parent_path,
pp.cmdline AS cmd,
pp.on_disk AS parent_on_disk,
pp.uid AS parent_uid,
pp.gid AS parent_gid
FROM processes p
JOIN processes pp ON pp.pid = p.parent
WHERE parent_on_disk != 1
AND child_on_disk = 1
AND NOT child_pid IN (1, 2)
AND NOT parent_pid IN (1, 2) -- launchd, kthreadd
AND NOT parent_path IN (
"/opt/google/chrome/chrome",
"/usr/bin/gnome-shell"
) -- long-running launchers
AND NOT parent_name IN (
"lightdm",
"nvim",
"gnome-shell",
"slack",
"kube-proxy",
"kubelet"
) -- These alerts were unfortunately useless - lots of spam on macOS
AND NOT (
parent_path = ""
AND p.uid > 500
)
AND parent_path NOT LIKE "/app/extra/%"
AND parent_path NOT LIKE "/opt/homebrew/Cellar/%"