osquery-defense-kit/detection/execution/relative-exec-low-uid.sql
2023-05-17 10:54:16 -04:00

56 lines
1.4 KiB
SQL

-- Programs running as root with a relative path
--
-- references:
-- * https://www.microsoft.com/en-us/security/blog/2022/12/21/microsoft-research-uncovers-new-zerobot-capabilities/
--
-- tags: transient process state
-- platform: posix
SELECT -- Child
p0.pid AS p0_pid,
p0.path AS p0_path,
p0.name AS p0_name,
p0.cmdline AS p0_cmd,
p0.start_time AS p0_start,
p0.cwd AS p0_cwd,
p0.euid AS p0_euid,
p0_hash.sha256 AS p0_sha256,
-- Parent
p0.parent AS p1_pid,
p1.path AS p1_path,
p1.start_time AS p1_start,
p1.name AS p1_name,
p1_f.mode AS p1_mode,
p1.euid AS p1_euid,
p1.cmdline AS p1_cmd,
p1_hash.sha256 AS p1_sha256,
-- Grandparent
p1.parent AS p2_pid,
p2.name AS p2_name,
p2.start_time AS p2_start,
p2.path AS p2_path,
p2.cmdline AS p2_cmd,
p2_hash.sha256 AS p2_sha256
FROM
processes p0
LEFT JOIN file f ON p0.path = f.path
LEFT JOIN hash p0_hash ON p0.path = p0_hash.path
LEFT JOIN processes p1 ON p0.parent = p1.pid
LEFT JOIN file p1_f ON p1.path = p1_f.path
LEFT JOIN hash p1_hash ON p1.path = p1_hash.path
LEFT JOIN processes p2 ON p1.parent = p2.pid
LEFT JOIN hash p2_hash ON p2.path = p2_hash.path
WHERE
p0.pid IN (
SELECT
pid
FROM
processes
WHERE
euid < 500
AND cmdline LIKE './%'
AND NOT cmdline LIKE './out/osqtool-% %'
AND NOT cgroup_path LIKE '/system.slice/docker-%'
)
GROUP BY
p0.pid