222 lines
7.7 KiB
SQL
222 lines
7.7 KiB
SQL
-- Pick out exotic processes based on their command-line (events-based)
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--
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-- references:
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-- * https://themittenmac.com/what-does-apt-activity-look-like-on-macos/
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--
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-- false positives:
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-- * possible, but none known
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--
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-- tags: transient process events
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-- platform: darwin
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-- interval: 180
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SELECT -- Child
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pe.path AS p0_path,
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pe.time AS p0_time,
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REGEX_MATCH (pe.path, '.*/(.*)', 1) AS p0_name,
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TRIM(pe.cmdline) AS p0_cmd,
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pe.cwd AS p0_cwd,
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pe.pid AS p0_pid,
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pe.euid AS p0_euid,
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s.authority AS p0_authority,
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-- Parent
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pe.parent AS p1_pid,
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TRIM(COALESCE(p1.cmdline, pe1.cmdline)) AS p1_cmd,
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COALESCE(p1.path, pe1.path) AS p1_path,
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COALESCE(p_hash1.sha256, pe_hash1.sha256) AS p1_hash,
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REGEX_MATCH (COALESCE(p1.path, pe1.path), '.*/(.*)', 1) AS p1_name,
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pe_sig1.authority AS p1_authority,
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-- Grandparent
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COALESCE(p1.parent, pe1.parent) AS p2_pid,
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TRIM(
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COALESCE(p1_p2.cmdline, pe1_p2.cmdline, pe1_pe2.cmdline)
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) AS p2_cmd,
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COALESCE(p1_p2.path, pe1_p2.path, pe1_pe2.path) AS p2_path,
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COALESCE(
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p1_p2_hash.path,
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pe1_p2_hash.path,
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pe1_pe2_hash.path
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) AS p2_hash,
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REGEX_MATCH (
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COALESCE(p1_p2.path, pe1_p2.path, pe1_pe2.path),
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'.*/(.*)',
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1
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) AS p2_name,
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COALESCE(
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p1_p2_sig.authority,
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pe1_p2_sig.authority,
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pe1_pe2_sig.authority
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) AS p2_authority,
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-- Exception key
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REGEX_MATCH (pe.path, '.*/(.*)', 1) || ',' || MIN(pe.euid, 500) || ',' || REGEX_MATCH (COALESCE(p1.path, pe1.path), '.*/(.*)', 1) || ',' || REGEX_MATCH (
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COALESCE(p1_p2.path, pe1_p2.path, pe1_pe2.path),
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'.*/(.*)',
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1
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) AS exception_key
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FROM
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process_events pe,
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uptime
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LEFT JOIN processes p ON pe.pid = p.pid
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LEFT JOIN signature s ON pe.path = s.path -- Parents (via two paths)
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LEFT JOIN processes p1 ON pe.parent = p1.pid
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LEFT JOIN hash p_hash1 ON p1.path = p_hash1.path
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LEFT JOIN process_events pe1 ON pe.parent = pe1.pid
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AND pe1.cmdline != ''
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LEFT JOIN hash pe_hash1 ON pe1.path = pe_hash1.path
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LEFT JOIN signature pe_sig1 ON pe1.path = pe_sig1.path -- Grandparents (via 3 paths)
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LEFT JOIN processes p1_p2 ON p1.parent = p1_p2.pid -- Current grandparent via parent processes
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LEFT JOIN processes pe1_p2 ON pe1.parent = pe1_p2.pid -- Current grandparent via parent events
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LEFT JOIN process_events pe1_pe2 ON pe1.parent = pe1_p2.pid
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AND pe1_pe2.cmdline != '' -- Past grandparent via parent events
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LEFT JOIN hash p1_p2_hash ON p1_p2.path = p1_p2_hash.path
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LEFT JOIN hash pe1_p2_hash ON pe1_p2.path = pe1_p2_hash.path
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LEFT JOIN hash pe1_pe2_hash ON pe1_pe2.path = pe1_pe2_hash.path
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LEFT JOIN signature p1_p2_sig ON p1_p2.path = p1_p2_sig.path
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LEFT JOIN signature pe1_p2_sig ON pe1_p2.path = pe1_p2_sig.path
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LEFT JOIN signature pe1_pe2_sig ON pe1_pe2.path = pe1_pe2_sig.path
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WHERE
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pe.time > (strftime('%s', 'now') -180)
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AND pe.status = 0
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AND pe.cmdline != ''
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AND pe.cmdline IS NOT NULL
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AND (
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p0_name IN (
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'bitspin',
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'bpftool',
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'csrutil',
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'heyoka',
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'nstx',
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'dnscat2',
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'tuns',
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'iodine',
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'rshell',
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'rsh',
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'incbit',
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'kmod',
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'lushput',
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'mkfifo',
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'msfvenom',
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'nc',
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'socat'
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) -- Chrome Stealer
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OR p0_cmd LIKE '%set visible of front window to false%'
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OR p0_cmd LIKE '%chrome%-load-extension%' -- Known attack scripts
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OR p0_name LIKE '%pwn%'
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OR p0_name LIKE '%attack%' -- Unusual behaviors
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OR p0_cmd LIKE '%chattr -i%'
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OR p0_cmd LIKE '%dd if=/dev/%'
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OR p0_cmd LIKE '%cat /dev/null >%'
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OR p0_cmd LIKE '%truncate -s0 %'
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OR p0_cmd LIKE '%touch%acmr%'
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OR p0_cmd LIKE '%touch -r%'
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OR p0_cmd LIKE '%ld.so.preload%'
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OR p0_cmd LIKE 'killall%NotificationCenter'
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OR p0_cmd LIKE '%urllib.urlopen%'
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OR p0_cmd LIKE '%nohup%tmp%'
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OR p0_cmd LIKE '%killall Terminal%'
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OR (
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pe.euid = 0
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AND (
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p0_cmd LIKE '%pkill -f%'
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OR p0_cmd LIKE '%xargs kill -9%'
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)
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)
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OR p0_cmd LIKE '%rm -f /var/tmp%'
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OR p0_cmd LIKE '%rm -f /tmp%'
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OR p0_cmd LIKE '%nohup /bin/bash%'
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OR (
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INSTR(p0_cmd, 'history') > 0
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AND p0_cmd LIKE '%history'
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AND p0_cmd NOT LIKE '% history'
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)
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OR p0_cmd LIKE '%echo%|%base64 --decode %|%'
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OR p0_cmd LIKE '%echo%|%base64 -d %|%'
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OR p0_cmd LIKE '%launchctl bootout%'
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OR p0_cmd LIKE '%chflags uchg%'
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OR (
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p0_cmd LIKE '%UserKnownHostsFile=/dev/null%'
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AND NOT p1_name = 'limactl'
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AND NOT p1_cmd LIKE '%gcloud.py%'
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) -- Random keywords
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OR p0_cmd LIKE '%ransom%' -- Reverse shells
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OR p0_cmd LIKE '%fsockopen%'
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OR p0_cmd LIKE '%openssl%quiet%'
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OR p0_cmd LIKE '%pty.spawn%'
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OR (
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p0_cmd LIKE '%sh -i'
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AND NOT p1_name IN ('sh', 'java')
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AND NOT p1_cmd LIKE "%pipenv shell"
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)
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OR p0_cmd LIKE 'socat %'
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OR p0_cmd LIKE '%SOCK_STREAM%'
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OR INSTR(p0_cmd, 'Socket.') > 0
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) -- Things that could reasonably happen at boot.
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AND NOT (
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pe.path = '/usr/bin/mkfifo'
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AND (
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p0_cmd LIKE '%/org.gpgtools.log.%/fifo'
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OR p0_cmd LIKE '%/var/%/gitstatus.POWERLEVEL9K.%'
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OR p0_cmd LIKE '%/var/%/p10k.worker.%'
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)
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)
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AND NOT (
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p0_cmd LIKE '%csrutil status'
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AND p1_name IN ('Dropbox')
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)
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AND NOT (
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p0_cmd IN (
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'/bin/launchctl bootout gui/501 /Library/LaunchAgents/com.logi.optionsplus.plist',
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'/bin/launchctl bootout system/com.docker.socket',
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'/bin/rm -f /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress',
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'git history',
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'dd if=/dev/urandom bs=15 count=1 status=none',
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'launchctl bootout gui/501/com.grammarly.ProjectLlama.UninstallAgent',
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'helm history',
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'/Library/Apple/System/Library/StagedFrameworks/Safari/SafariShared.framework/XPCServices/com.apple.Safari.History.xpc/Contents/MacOS/com.apple.Safari.History',
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'nc -h',
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'nc',
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'nc -uv 8.8.8.8 53',
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'nc localhost 8080 -vz',
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'nix profile history',
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'dd if=/dev/stdin conv=unblock cbs=79',
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'rm -f /tmp/mysql.sock',
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'sh -c launchctl bootout system "/Library/LaunchDaemons/com.ecamm.EcammAudioXPCHelper.plist"',
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'/usr/bin/csrutil report',
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'/usr/bin/csrutil status',
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'/usr/bin/pkill -F /private/var/run/lima/shared_socket_vmnet.pid',
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'/usr/bin/sudo /bin/rm -f /tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress',
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'/usr/bin/xattr -d com.apple.writer_bundle_identifier /Applications/Safari.app',
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'xpcproxy com.apple.Safari.History'
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) -- The source of these commands is still a mystery to me.
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OR pe.parent = -1
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)
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AND NOT p0_cmd LIKE 'launchctl bootout gui/501 /Users/%/Library/LaunchAgents/com.elgato.StreamDeck.plist'
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AND NOT p0_cmd LIKE '-history%'
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AND NOT p0_cmd LIKE 'dirname %history'
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AND NOT p0_cmd LIKE '/bin/rm -f /tmp/periodic.%'
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AND NOT p0_cmd LIKE '/bin/rm -f /tmp/nix-shell.%'
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AND NOT p0_cmd LIKE 'touch -r . /private/tmp/nix-build%'
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AND NOT p0_cmd LIKE '%GNU Libtool%touch -r%'
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AND NOT p0_cmd LIKE 'rm -f /tmp/locate%/_updatedb%'
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AND NOT p0_cmd LIKE 'rm -f /tmp/locate%/mklocate%/_mklocatedb%'
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AND NOT p0_cmd LIKE 'rm -f /tmp/insttmp_%'
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AND NOT p0_cmd LIKE '%nc localhost%'
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AND NOT p0_cmd LIKE '%nc -vz localhost%'
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AND NOT p0_cmd LIKE '/bin/cp %history%sessions/%'
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AND NOT p0_cmd LIKE '%ssh %/lima/%'
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AND NOT p0_cmd LIKE 'touch -r /tmp/KSInstallAction.%'
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AND NOT p0_cmd LIKE '%find /Applications/LogiTuneInstaller.app -type d -exec chmod 777 {}%'
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AND NOT p0_cmd LIKE '/bin/rm -f /tmp/com.adobe.%.updater/%'
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AND NOT p0_name IN ('cc1', 'compile', 'yara')
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AND NOT exception_key IN (
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'dd,500,zsh,login',
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'bash,500,idea,launchd',
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'yara,500,bash,fish',
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'ssh,500,limactl.ventura,launchd',
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'git,500,zsh,login',
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'bat,500,zsh,login',
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'git,500,zsh,goland',
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'jq,500,zsh,login',
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'sh,0,Ecamm Live,launchd',
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'cat,500,zsh,login'
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)
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