osquery-defense-kit/detection/evasion/hidden-executable.sql
2023-04-28 14:09:57 -04:00

51 lines
1.3 KiB
SQL

-- Programs running with a hidden file path or process name
--
-- references:
-- * https://attack.mitre.org/techniques/T1564/001/ (Hide Artifacts: Hidden Files and Directories)
--
-- tags: transient
-- 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.cwd AS p0_cwd,
p0.cgroup_path AS p0_cgroup,
p0.euid AS p0_euid,
p0_hash.sha256 AS p0_sha256,
-- Parent
p0.parent AS p1_pid,
p1.path AS p1_path,
p1.name AS p1_name,
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.path AS p2_path,
p2.cmdline AS p2_cmd,
p2_hash.sha256 AS p2_sha256
FROM
process_open_sockets pop
LEFT JOIN processes p0 ON pop.pid = p0.pid
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 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.name LIKE '.%'
OR f.filename LIKE '.%'
OR f.directory LIKE '.%'
)
AND NOT f.path LIKE '/nix/store/%/%-wrapped'
AND NOT (
f.path LIKE '/nix/store/%'
AND p0.name LIKE '%-wrappe%'
)