osquery-defense-kit/process/sketchy-fetcher.sql

72 lines
2.0 KiB
SQL

SELECT
p.pid,
p.path,
p.name,
p.cmdline,
REGEX_MATCH (p.cmdline, '/(\d+\.\d+\.\d+\.\d+)[:/]', 1) AS remote_address,
REGEX_MATCH (p.cmdline, '/(:\d+\/)/', 1) AS remote_port,
p.cwd,
p.euid,
p.parent,
pp.path AS parent_path,
pp.name AS parent_name,
pp.cmdline AS parent_cmdline,
pp.euid AS parent_euid,
hash.sha256 AS parent_sha256
FROM
processes p
LEFT JOIN processes pp ON p.parent = pp.pid
LEFT JOIN hash ON pp.path = hash.path
WHERE
-- NOTE: Sync remaining portion with sketchy-fetcher-events
(
INSTR(p.cmdline, 'wget ') > 0
OR INSTR(p.cmdline, 'curl ') > 0
)
AND (
remote_address NOT IN ("", "127.0.0.1", "::1")
OR remote_port != ""
OR p.cmdline LIKE "%.onion%"
OR p.cmdline LIKE "%tor2web%"
OR p.cmdline LIKE "%aliyun%"
OR p.cmdline LIKE "%pastebin%"
OR p.cmdline LIKE "%curl %--user-agent%"
OR p.cmdline LIKE "%curl -k%"
OR p.cmdline LIKE "%curl%--insecure%"
OR p.cmdline LIKE "%wget %--user-agent%"
OR p.cmdline LIKE "%wget %--no-check-certificate%"
OR (
p.cmdline LIKE "%wget %"
AND p.euid < 500
)
OR (
p.cmdline LIKE "%curl %"
AND p.euid < 500
)
)
-- Exceptions for all calls
AND pp.name NOT IN ('makepkg') -- Exceptions for non-privileged calls
AND NOT (
p.euid > 500
AND (
p.cmdline LIKE "%--dump-header%"
OR p.cmdline LIKE "%/api/v%"
OR p.cmdline LIKE "%curl -X %"
OR p.cmdline LIKE "%go mod %"
OR p.cmdline LIKE "%application/json%"
OR p.cmdline LIKE "%grpcurl%"
OR p.cmdline LIKE "%Homebrew%"
OR p.cmdline LIKE "%If-None-Match%"
OR p.cmdline LIKE "%ctlog%"
OR p.cmdline LIKE "%.well-known/openid-configuration%"
OR p.cmdline LIKE "%/openid/v1/jwks%"
OR p.cmdline LIKE "%--progress-bar%"
OR parent_cmdline LIKE "%brew.rb%"
OR parent_cmdline LIKE "%brew.sh%"
OR p.cmdline LIKE "git %"
OR p.cmdline LIKE "%LICENSES/vendor/%"
OR p.cmdline LIKE "%localhost:%"
OR p.cmdline LIKE "%127.0.0.1:%"
)
)