osquery-defense-kit/detection/execution/exotic-commands-macos.sql

116 lines
3.0 KiB
SQL

-- Pick out exotic processes based on their command-line (state-based)
--
-- false positives:
-- * possible, but none known
--
-- tags: transient process state
-- platform: darwin
SELECT
s.authority AS p0_auth,
s.identifier AS p0_id,
-- 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_f.mode AS p1_mode,
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
LEFT JOIN file f ON p0.path = f.path
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 file p1_f ON p1.path = p1_f.path
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.pid IN (
SELECT
p.pid
FROM
processes p
WHERE
p.name IN (
'bitspin',
'bpftool',
'heyoka',
'nstx',
'dnscat2',
'tuns',
'iodine',
'esxcli',
'vim-cmd',
'minerd',
'cpuminer-multi',
'cpuminer',
'httpdns',
'rshell',
'rsh',
'xmrig',
'incbit',
'lushput',
'mkfifo',
'msfvenom',
'nc',
'socat'
) -- coin miner names
OR REGEX_MATCH (p.name, "(pwn|xig|xmr)", 1) != "" -- malicious processes
OR REGEX_MATCH (
p.cmdline,
"(bitspin|lushput|incbit|traitor|msfvenom|urllib.urlopen|nohup.*tmp|chrome.*--load-extension|tail -f /dev/null|wormhole)",
1
) != "" -- suspicious things
OR REGEX_MATCH (
p.cmdline,
"(UserKnownHostsFile=/dev/null|ransom|malware|fsockopen|openssl.*quiet|pty.spawn|SOCK_STREAM)",
1
) != "" -- Crypto miners
OR REGEX_MATCH (
p.cmdline,
"(c3pool|cryptonight|f2pool|hashrate|hashvault|minerd|monero|nanopool|nicehash|stratum|wss://| --pool| --algo)",
1
) != "" -- Needs to be case sensitive
OR (
INSTR(p.cmdline, '%Socket.%') > 0
AND NOT p.name IN ('cc1', 'compile', 'cmake', 'cc1plus')
)
OR p.cmdline LIKE '%dd if=/dev/%'
)
AND NOT (
p0_cmd LIKE '%UserKnownHostsFile=/dev/null%'
AND (
p0_cmd LIKE "%lima/%"
OR p0_cmd LIKE "%minikube/%"
OR p0_cmd LIKE '%@localhost'
OR p0_cmd LIKE '%ServerAliveInterval=0%'
OR p1_cmd LIKE '%gcloud.py%'
)
)
AND NOT (
p0_cmd LIKE '%sh -i'
AND p1_cmd LIKE '%pipenv shell'
)
AND NOT p0_cmd IN ('pkill -f Jabra Direct')
AND NOT p0_cmd LIKE "%dd if=/dev/stdin conv=unblock cbs=79"
AND NOT p0_cmd LIKE '%docker% run % tail -f /dev/null'
AND NOT p1_path LIKE '/Applications/Emacs.app/Contents/MacOS/Emacs-arm64-%'
GROUP BY
p0.pid;