78 lines
2.1 KiB
SQL
78 lines
2.1 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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p.name AS child_name,
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p.pid AS child_pid,
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p.path AS child_path,
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p.cmdline AS child_cmd,
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p.euid AS child_euid,
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p.gid AS child_gid,
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p.cgroup_path AS child_cgroup,
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hash.path,
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p.on_disk AS child_on_disk,
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pp.pid AS parent_pid,
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pp.name AS parent_name,
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pp.path AS parent_path,
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pp.cmdline AS cmd,
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pp.on_disk AS parent_on_disk,
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pp.cgroup_path AS parent_cgroup,
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pp.uid AS parent_uid,
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pp.gid AS parent_gid
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FROM
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processes p
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JOIN processes pp ON pp.pid = p.parent
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LEFT JOIN hash ON p.path = hash.path
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WHERE
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parent_on_disk != 1
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AND child_on_disk = 1
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AND NOT child_pid IN (1, 2)
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AND NOT parent_pid IN (1, 2) -- launchd, kthreadd
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AND NOT parent_path IN (
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'/opt/google/chrome/chrome',
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'/usr/bin/alacritty',
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'/usr/bin/dockerd',
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'/usr/bin/fusermount3',
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'/usr/bin/osqueryd',
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'/usr/bin/yay',
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'/usr/bin/doas',
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'/usr/bin/gnome-shell',
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'/usr/lib/systemd/systemd'
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) -- long-running launchers
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AND NOT parent_name IN (
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'lightdm',
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'nvim',
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'gnome-shell',
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'fish',
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'bash',
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'slack',
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'kube-proxy',
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'kubelet'
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) -- These alerts were unfortunately useless - lots of spam on macOS
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AND NOT (
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parent_path LIKE '/app/%'
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AND child_cgroup LIKE '/user.slice/user-1000.slice/user@1000.service/app.slice/%'
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)
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AND child_cgroup NOT LIKE '/system.slice/docker-%'
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AND parent_cgroup NOT LIKE '/system.slice/docker-%'
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AND parent_cgroup NOT LIKE '/user.slice/user-1000.slice/user@1000.service/user.slice/nerdctl-%'
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AND parent_path NOT LIKE '/opt/homebrew/Cellar/%'
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AND parent_path NOT LIKE '/tmp/.mount_%/%'
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AND parent_path NOT LIKE '%google-cloud-sdk/.install/.backup%'
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AND NOT (
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parent_name LIKE 'kworker/%+events_unbound'
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AND child_name IN ('modprobe')
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)
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