95 lines
2.5 KiB
SQL
95 lines
2.5 KiB
SQL
-- Catch applications running from unusual directories, such as /tmp (event-based)
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--
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-- references:
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-- * https://attack.mitre.org/techniques/T1074/
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--
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-- false positives:
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-- * programs running in alternative namespaces (Docker)
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--
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-- interval: 60
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-- platform: linux
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-- tags: process events
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SELECT
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pe.pid,
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pe.path,
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REGEX_MATCH (pe.path, '(.*)/', 1) AS dirname,
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pe.mode,
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pe.cwd,
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pe.euid,
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pe.parent,
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pp.path AS parent_path,
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pp.name AS parent_name,
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pp.cmdline AS parent_cmd,
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pp.euid AS parent_euid,
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phash.sha256 AS parent_sha256,
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hash.sha256 AS sha256
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FROM
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process_events pe
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LEFT JOIN processes p ON pe.pid = pe.pid
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LEFT JOIN processes pp ON pe.parent = p.pid
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LEFT JOIN hash ON pe.path = hash.path
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LEFT JOIN hash phash ON pp.path = hash.path
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WHERE
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pe.time > (strftime('%s', 'now') -60)
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AND dirname NOT LIKE '/home/%'
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AND dirname NOT LIKE '/nix/store/%/bin'
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AND dirname NOT LIKE '/nix/store/%/lib/%'
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AND dirname NOT LIKE '/nix/store/%/libexec'
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AND dirname NOT LIKE '/nix/store/%/libexec/%'
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AND dirname NOT LIKE '/nix/store/%/share/%'
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AND dirname NOT LIKE '/opt/%'
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AND dirname NOT LIKE '/tmp/go-build%'
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AND dirname NOT LIKE '/snap/%'
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AND dirname NOT LIKE '/usr/libexec/%'
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AND dirname NOT LIKE '/usr/local/%/bin/%'
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AND dirname NOT LIKE '/usr/local/%bin'
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AND dirname NOT LIKE '/usr/local/%libexec'
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and dirname NOT LIKE '/usr/local/Cellar/%'
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AND dirname NOT LIKE '/usr/lib/%'
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AND dirname NOT LIKE '/usr/lib64/%'
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AND dirname NOT LIKE '/tmp/%/bin'
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AND dirname NOT LIKE '/usr/local/go/pkg/tool/%'
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AND dirname NOT IN (
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'/',
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'/app',
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'/bin',
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'/ko-app',
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'/sbin',
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'/usr/bin',
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'/usr/lib',
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'/usr/lib64/firefox',
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'/usr/lib/bluetooth',
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'/usr/lib/cups/notifier',
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'/usr/lib/evolution-data-server',
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'/usr/libexec',
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'/usr/libexec/ApplicationFirewall',
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'/usr/libexec/rosetta',
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'/usr/lib/firefox',
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'/usr/lib/fwupd',
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'/usr/lib/ibus',
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'/usr/lib/libreoffice/program',
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'/usr/lib/polkit-1',
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'/usr/lib/slack',
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'/usr/lib/snapd',
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'/usr/lib/systemd',
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'/usr/lib/telepathy',
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'/usr/lib/udisks2',
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'/usr/lib/xorg',
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'/usr/sbin',
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'/usr/share/code',
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'/usr/share/teams',
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'/usr/share/teams/resources/app.asar.unpacked/node_modules/slimcore/bin'
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)
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AND NOT pe.path IN ('/usr/lib32/ld-linux.so.2')
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AND NOT (
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dirname = ''
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AND p.name LIKE 'runc%'
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)
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AND NOT (
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dirname = ''
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AND parent_name IN ('dockerd')
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)
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AND NOT (pe.euid = 65532)
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GROUP BY
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pe.pid
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