123 lines
3.1 KiB
SQL
123 lines
3.1 KiB
SQL
-- Processes that have an unrelated name in the process tree than the program on disk.
|
|
--
|
|
-- false positives:
|
|
-- * new software, particularly those using interpreted languages
|
|
--
|
|
-- references:
|
|
-- * https://attack.mitre.org/techniques/T1036/004/ (Masquerade Task or Service)
|
|
--
|
|
-- tags: persistent process
|
|
SELECT
|
|
SUBSTR(
|
|
COALESCE(
|
|
-- TODO: Fix to not require filename!
|
|
REGEX_MATCH (f.filename, '(.*?)\W', 1),
|
|
f.filename
|
|
),
|
|
0,
|
|
6
|
|
) AS short_filename,
|
|
COALESCE(REGEX_MATCH (p0.path, '.*/(.*)', 1), p0.path) AS basename,
|
|
COALESCE(
|
|
REGEX_MATCH (p0.path, '.*/([a-zA-Z]+)', 1),
|
|
p0.path
|
|
) AS base_letters,
|
|
CONCAT (
|
|
MIN(p0.euid, 500),
|
|
',',
|
|
COALESCE(REGEX_MATCH (p0.path, '.*/(.*)', 1), p0.path),
|
|
',',
|
|
p0.name
|
|
) AS exception_key,
|
|
-- 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
|
|
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 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.path != ''
|
|
AND NOT p0.name == basename
|
|
AND NOT (
|
|
LENGTH(basename) > 1
|
|
AND basename == short_filename
|
|
)
|
|
AND NOT (
|
|
LENGTH(p0.name) > 2
|
|
AND INSTR(LOWER(basename), LOWER(p0.name)) > 0
|
|
)
|
|
AND NOT (
|
|
LENGTH(short_filename) > 2
|
|
AND INSTR(LOWER(p0.name), LOWER(short_filename)) > 0
|
|
) -- Extremely common and unpredictable process name setters
|
|
AND NOT base_letters IN (
|
|
'bash',
|
|
'busybox',
|
|
'dash',
|
|
'electron',
|
|
'firefox',
|
|
'gjs',
|
|
'node',
|
|
'perl',
|
|
'python',
|
|
'ruby',
|
|
'thunderbird',
|
|
'vim'
|
|
)
|
|
AND NOT exception_key IN (
|
|
'0,udevadm,systemd-udevd',
|
|
'0,udevadm,(udev-worker)',
|
|
'120,systemd-executor,(sd-pam)',
|
|
'42,systemd-executor,(sd-pam)',
|
|
'500,busybox,sh',
|
|
'500,chainctl,docker-credenti',
|
|
'500,coreutils,tail',
|
|
'500,gjs-console,daemon.js',
|
|
'500,gjs-console,gnome-character',
|
|
'500,nc.openbsd,nc',
|
|
'500,netcat,nc',
|
|
'500,plugin-container,MainThread',
|
|
'500,pyrogenesis,main',
|
|
'500,rootlesskit,exe',
|
|
'500,rootlessport,exe',
|
|
'500,systemd-executor,(sd-pam)',
|
|
'500,udevadm,systemd-udevd',
|
|
'500,vim.basic,vi',
|
|
'500,vim.nox,vi',
|
|
'500,vim.tiny,vi',
|
|
'500,x86_64-linux-gnu-as,as'
|
|
)
|
|
AND NOT exception_key LIKE '%,systemd,(sd-pam)'
|
|
AND NOT (
|
|
p0.path = '/usr/lib/xfce4/panel/wrapper-2.0'
|
|
AND exception_key LIKE '500,wrapper-2.0,panel-%'
|
|
)
|
|
AND NOT p0.path IN ('/usr/lib/systemd/systemd')
|
|
AND NOT p0_cgroup LIKE '/system.slice/docker-%'
|
|
GROUP by
|
|
exception_key
|