osquery-defense-kit/policy/gcp-service-account-keys.sql

54 lines
1.6 KiB
SQL

-- Indicative of stored GCP service account keys just sitting around unencrypted
--
-- tags: persistent state filesystem
-- platform: posix
SELECT
file.path,
file.filename,
file.type,
file.size,
file.mtime,
file.uid,
file.ctime,
file.gid,
hash.sha256,
magic.data
FROM
file
LEFT JOIN hash ON file.path = hash.path
LEFT JOIN users u ON file.uid = u.uid
LEFT JOIN magic ON file.path = magic.path
WHERE
(
file.directory LIKE '/Users/%/Downloads/%'
OR file.directory LIKE '/home/%/%'
OR file.directory LIKE '/home/%/'
OR file.directory LIKE '/home/%/.%'
OR file.directory LIKE '/home/%/Downloads/%'
OR file.directory LIKE '/tmp/%'
OR file.directory LIKE '/tmp/'
OR file.directory LIKE '/Users/%/%'
OR file.directory LIKE '/Users/%/'
OR file.directory LIKE '/Users/%/.%'
OR file.directory LIKE '/var/tmp/%'
OR file.directory LIKE '/var/tmp/'
)
AND file.directory NOT LIKE "%/../%"
AND file.directory NOT LIKE "%/./%"
AND filename LIKE "%-%-%.json"
AND size BETWEEN 2311 AND 2385
-- Don't alert on tokens that begin with the username-, as they may be personal
AND NOT INSTR(filename, CONCAT (u.username, "-")) == 1
-- Don't alert on tokens that begin with the users full name and a dash
AND NOT INSTR(
filename,
REPLACE(LOWER(TRIM(description)), " ", "-")
) == 1
-- Demo keys
AND NOT file.filename LIKE 'host-project-%'
AND NOT file.filename LIKE 'ulabs-%'
AND NOT hash.sha256 IN (
"c7d6bac8e942511e25973889ac38656d4d46f68044650d694721017fda23716e",
"bd5f4c01ebb5636b94584ee4ae42514b27d371859f7344f6aa5a37332ee714ba"
)