56 lines
1.7 KiB
SQL
56 lines
1.7 KiB
SQL
-- Find root-run processes which link against libpcap
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--
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-- WARNING: This check consumes an unusual amount of system memory (up to 225MB)
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--
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-- references:
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-- * https://attack.mitre.org/techniques/T1205/001/ (Traffic Signaling: Port Knocking)
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--
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-- platform: linux
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-- tags: persistent state process sniffer
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SELECT
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pmm.pid,
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p.uid,
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p.gid,
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pmm.path AS lib_path,
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p.path AS child_path,
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p.name AS child_name,
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p.cmdline AS child_cmd,
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p.cwd AS child_cwd,
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h.sha256 AS child_sha256,
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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.cwd AS parent_cwd,
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pp.euid AS parent_euid,
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ph.sha256 AS parent_sha256
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-- Using processes is much faster than process_memory_map
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FROM
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processes p
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LEFT JOIN process_memory_map pmm ON p.pid = pmm.pid
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LEFT JOIN hash h ON p.path = h.path
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LEFT JOIN processes pp ON p.parent = pp.pid
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LEFT JOIN hash AS ph ON pp.path = ph.path
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WHERE
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p.euid = 0
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AND pmm.path LIKE '%libpcap%'
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AND child_path NOT LIKE '/usr/local/kolide-k2/bin/osqueryd-updates/%/osqueryd'
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AND child_path NOT LIKE '/nix/store/%-systemd-%/lib/systemd/systemd%'
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AND child_path NOT LIKE '/nix/store/%-systemd-%/bin/udevadm'
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AND child_path NOT LIKE '/System/Library/%'
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AND child_path NOT LIKE '/nix/store/%/bin/nix'
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AND child_path NOT IN (
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'/usr/libexec/UserEventAgent',
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'/usr/sbin/systemstats',
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'/usr/bin/libvirtd',
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'/usr/bin/tcpdump',
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'/usr/sbin/cupsd',
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'/run/current-system/systemd/lib/systemd/systemd'
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)
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AND child_cmd NOT IN (
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'/nix/var/nix/profiles/default/bin/nix-daemon',
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'/run/current-system/systemd/lib/systemd/systemd'
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)
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AND child_cmd NOT LIKE '/usr/bin/python3 -s%/usr/sbin/firewalld%'
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GROUP BY
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p.pid
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