osquery-defense-kit/detection/c2/unexpected-libcurl-user-macos.sql
2023-03-16 16:10:25 -04:00

48 lines
1.2 KiB
SQL

-- Find programs processes which link against libcurl, common among cross-platform malware
--
-- References:
-- * https://objective-see.org/blog/blog_0x6C.html
-- * https://objective-see.org/blog/blog_0x72.html
--
-- platform: darwin
-- tags: persistent state process seldom
SELECT
s.authority,
s.identifier,
-- Child
p0.pid AS p0_pid,
p0.path AS p0_path,
p0.name AS p0_name,
p0.cmdline AS p0_cmd,
p0.cwd AS p0_cwd,
p0.euid AS p0_euid,
p0_hash.sha256 AS p0_sha256,
-- Parent
p0.parent AS p1_pid,
p1.path AS p1_path,
p1.name AS p1_name,
p1.euid AS p1_euid,
p1.cmdline AS p1_cmd,
p1_hash.sha256 AS p1_sha256,
-- Grandparent
p1.parent AS p2_pid,
p2.name AS p2_name,
p2.path AS p2_path,
p2.cmdline AS p2_cmd,
p2_hash.sha256 AS p2_sha256
FROM
processes p0
JOIN process_memory_map pmm ON p0.pid = pmm.pid
LEFT JOIN signature s ON p0.path = s.path
LEFT JOIN hash p0_hash ON p0.path = p0_hash.path
LEFT JOIN processes p1 ON p0.parent = p1.pid
LEFT JOIN hash p1_hash ON p1.path = p1_hash.path
LEFT JOIN processes p2 ON p1.parent = p2.pid
LEFT JOIN hash p2_hash ON p2.path = p2_hash.path
WHERE
p0.euid = 0
AND pmm.path LIKE '%libcurl%'
AND p0.name NOT IN ('nix-daemon', 'nix')
GROUP BY
p0.pid