osquery-defense-kit/detection/persistence/unexpected-launchd-program-arguments.sql
2023-01-20 09:24:24 -05:00

70 lines
3.0 KiB
SQL

-- Unexpected launchd scripts that use the 'program_arguments' field
--
-- references:
-- * https://attack.mitre.org/techniques/T1543/004/ (Create or Modify System Process: Launch Daemon)
--
-- false positives:
-- * Software by new vendors which have not yet been added to the allow list
--
-- tags: persistent filesystem state
-- platform: darwin
SELECT
l.label,
l.name,
l.path,
TRIM(REGEX_SPLIT (l.program_arguments, ' -', 0)) AS program_path,
l.program_arguments,
l.keep_alive,
signature.authority AS program_authority,
hash.sha256
FROM
launchd l
LEFT JOIN signature ON program_path = signature.path
LEFT JOIN hash ON program_path = hash.path
WHERE
(
run_at_load = 1
OR keep_alive = 1
)
AND (
program IS NULL
OR program = ''
)
AND l.path NOT LIKE '/System/%'
AND program_authority NOT IN (
'Developer ID Application: Adobe Inc. (JQ525L2MZD)',
'Developer ID Application: Corsair Memory, Inc. (Y93VXCB8Q5)',
'Developer ID Application: Foxit Corporation (8GN47HTP75)',
'Developer ID Application: Google LLC (EQHXZ8M8AV)',
'Developer ID Application: Google, Inc. (EQHXZ8M8AV)',
'Developer ID Application: Keybase, Inc. (99229SGT5K)',
'Developer ID Application: Kolide Inc (YZ3EM74M78)',
'Developer ID Application: Logitech Inc. (QED4VVPZWA)',
'Developer ID Application: Fumihiko Takayama (G43BCU2T37)',
'Developer ID Application: MacPaw Inc. (S8EX82NJP6)',
'Developer ID Application: Mersive Technologies (63B5A5WDNG)',
'Developer ID Application: JetBrains s.r.o. (2ZEFAR8TH3)',
'Developer ID Application: Microsoft Corporation (UBF8T346G9)',
'Developer ID Application: Proton Technologies AG (6UN54H93QT)',
'Developer ID Application: Seiko Epson Corporation (TXAEAV5RN4)',
'Developer ID Application: Sanford, L.P. (N3S6676K3E)', -- DYMO
'Developer ID Application: Canva Pty Ltd (5HD2ARTBFS)',
'Developer ID Application: Private Internet Access, Inc. (5357M5NW9W)',
'Developer ID Application: Tenable, Inc. (4B8J598M7U)',
'Software Signing', -- Apple
'yabai-cert'
)
AND program_arguments NOT IN (
'/Applications/Stream Deck.app/Contents/MacOS/Stream Deck --runinbk',
'/opt/homebrew/opt/jenkins/bin/jenkins --httpListenAddress=127.0.0.1 --httpPort=8080',
'/opt/homebrew/opt/mariadb/bin/mysqld_safe',
'/opt/homebrew/opt/skhd/bin/skhd',
'/opt/homebrew/opt/tailscale/bin/tailscaled',
'/opt/homebrew/opt/yubikey-agent/bin/yubikey-agent -l /opt/homebrew/var/run/yubikey-agent.sock',
'/usr/local/MacGPG2/libexec/fixGpgHome'
)
AND program_arguments NOT LIKE '/Users/%/Library/Application Support/com.grammarly.ProjectLlama/Scripts/Grammarly Uninstaller'
AND program_arguments NOT LIKE '/Users/%/Library/Application Support/com.grammarly.ProjectLlama/Scripts/post-uninstall.sh'
AND program_arguments NOT LIKE '%/mysqld_safe --datadir=%'
AND program_arguments NOT LIKE '/opt/homebrew/opt/socket_vmnet/bin/socket_vmnet --vmnet-gateway=% /opt/homebrew/var/run/socket_vmnet'