80 lines
2.2 KiB
SQL
80 lines
2.2 KiB
SQL
-- A program where the parent PID is not on disk
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--
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-- Reveals boopkit if a child is spawned
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-- TODO: Make mount namespace aware
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--
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-- false positives:
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-- * none observed
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--
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-- references:
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-- * https://attack.mitre.org/techniques/T1070/004/ (Indicator Removal on Host: File Deletion)
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--
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-- false positives:
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-- * none observed
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--
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-- tags: persistent daemon
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SELECT
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s.authority AS p0_auth,
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s.identifier AS p0_id,
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DATETIME(f.ctime, 'unixepoch') AS p0_changed,
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DATETIME(f.mtime, 'unixepoch') AS p0_modified,
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-- Child
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p0.pid AS p0_pid,
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p0.path AS p0_path,
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p0.name AS p0_name,
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p0.cmdline AS p0_cmd,
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p0.cwd AS p0_cwd,
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p0.euid AS p0_euid,
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p0_hash.sha256 AS p0_sha256,
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-- Parent
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p0.parent AS p1_pid,
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p1.path AS p1_path,
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p1.name AS p1_name,
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p1_f.mode AS p1_mode,
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p1.euid AS p1_euid,
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p1.cmdline AS p1_cmd,
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p1_hash.sha256 AS p1_sha256,
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-- Grandparent
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p1.parent AS p2_pid,
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p2.name AS p2_name,
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p2.path AS p2_path,
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p2.cmdline AS p2_cmd,
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p2_hash.sha256 AS p2_sha256
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FROM
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processes p0
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LEFT JOIN file f ON p0.path = f.path
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LEFT JOIN signature s ON p0.path = s.path
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LEFT JOIN hash p0_hash ON p0.path = p0_hash.path
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LEFT JOIN processes p1 ON p0.parent = p1.pid
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LEFT JOIN file p1_f ON p1.path = p1_f.path
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LEFT JOIN hash p1_hash ON p1.path = p1_hash.path
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LEFT JOIN processes p2 ON p1.parent = p2.pid
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LEFT JOIN hash p2_hash ON p2.path = p2_hash.path
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WHERE
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p0.pid IN (
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SELECT
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p.pid
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FROM
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processes p
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-- NOTE: This is an expensive join on macOS
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JOIN processes pp ON p.parent = pp.pid
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WHERE
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p.parent NOT IN (0, 1, 2)
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AND p.path != ""
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-- macOS Optimization
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AND p.path NOT LIKE '/System/%'
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AND p.path NOT LIKE '/usr/libexec/%'
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AND p.path NOT LIKE '/usr/bin/%'
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AND p.path NOT LIKE '/sbin/%'
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-- Exceptions
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AND pp.path NOT LIKE '/opt/homebrew/Cellar/%'
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AND pp.path NOT LIKE '%google-cloud-sdk/.install/.backup%'
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AND pp.path NOT LIKE '/private/var/folders/%/T/PKInstallSandboxTrash/%.sandboxTrash/%'
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AND pp.path NOT IN (
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"",
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"/sbin/launchd",
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"/Applications/Visual Studio Code.app/Contents/Frameworks/Code Helper (Plugin).app/Contents/MacOS/Code Helper (Plugin)"
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)
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AND pp.on_disk != 1
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);
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