151 lines
4.4 KiB
SQL
151 lines
4.4 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: 45
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SELECT
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p.pid,
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p.path,
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REPLACE(
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p.path,
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RTRIM(p.path, REPLACE(p.path, '/', '')),
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''
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) AS basename,
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-- On macOS there is often a trailing space
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TRIM(p.cmdline) AS cmd,
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p.mode,
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p.cwd,
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p.euid,
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p.parent,
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p.syscall,
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hash.sha256,
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pp.path AS parent_path,
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pp.name AS parent_name,
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TRIM(pp.cmdline) AS parent_cmd,
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TRIM(ppp.cmdline) AS gparent_cmd,
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pp.euid AS parent_euid,
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ppp.path AS gparent_path,
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ppp.name AS gparent_name,
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phash.sha256 AS parent_sha256,
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gphash.sha256 AS gparent_sha256
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FROM
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uptime,
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process_events p
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LEFT JOIN processes pp ON p.parent = pp.pid
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LEFT JOIN processes ppp ON pp.parent = ppp.pid
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LEFT JOIN hash ON p.path = hash.path
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LEFT JOIN hash AS phash ON pp.path = phash.path
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LEFT JOIN hash AS gphash ON ppp.path = gphash.path
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WHERE
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p.time > (strftime('%s', 'now') -45)
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AND (
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basename 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 cmd LIKE '%set visible of front window to false%'
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OR cmd LIKE '%chrome%-load-extension%' -- Known attack scripts
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OR basename LIKE '%pwn%'
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OR basename LIKE '%attack%' -- Unusual behaviors
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OR cmd LIKE '%chattr -ia%'
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OR cmd LIKE '%chmod 777 %'
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OR cmd LIKE '%touch%acmr%'
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OR cmd LIKE '%touch -r%'
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OR cmd LIKE '%ld.so.preload%'
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OR cmd LIKE '%urllib.urlopen%'
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OR cmd LIKE '%nohup%tmp%'
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OR cmd LIKE '%killall Terminal%'
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OR cmd LIKE '%iptables stop'
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OR (
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p.euid = 0
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AND (
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cmd LIKE '%pkill -f%'
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OR cmd LIKE '%xargs kill -9%'
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)
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)
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OR cmd LIKE '%rm -f /var/tmp%'
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OR cmd LIKE '%rm -f /tmp%'
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OR cmd LIKE '%nohup /bin/bash%'
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OR cmd LIKE '%history'
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OR cmd LIKE '%echo%|%base64 --decode %|%'
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OR cmd LIKE '%launchctl list%'
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OR (
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cmd LIKE '%UserKnownHostsFile=/dev/null%'
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AND NOT parent_name = 'limactl'
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) -- Random keywords
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OR cmd LIKE '%ransom%' -- Reverse shells
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OR cmd LIKE '%fsockopen%'
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OR cmd LIKE '%openssl%quiet%'
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OR cmd LIKE '%pty.spawn%'
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OR (
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cmd LIKE '%sh -i'
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AND NOT parent_name IN ('sh', 'java')
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AND NOT parent_cmd LIKE "%pipenv shell"
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)
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OR cmd LIKE '%socat%'
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OR cmd LIKE '%SOCK_STREAM%'
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OR INSTR(cmd, '%Socket.%') > 0
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) -- Things that could reasonably happen at boot.
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AND NOT (
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p.path = '/usr/bin/mkfifo'
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AND cmd LIKE '%/org.gpgtools.log.%/fifo'
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)
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AND NOT (
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cmd LIKE '%csrutil status'
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AND parent_name IN ('Dropbox')
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)
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AND NOT (
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cmd IN (
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'/bin/launchctl asuser 0 /bin/launchctl list',
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'/bin/launchctl list',
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'/bin/launchctl list com.logi.optionsplus.update',
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'/bin/launchctl list com.logi.optionsplus.updater',
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'/bin/launchctl list homebrew.mxcl.yabai',
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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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'launchctl list',
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'launchctl list com.microsoft.OneDriveUpdaterDaemon',
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'launchctl list com.parallels.desktop.launchdaemon',
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'launchctl list us.zoom.ZoomDaemon',
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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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'sudo launchctl list',
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'sudo launchctl list us.zoom.ZoomDaemon',
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'/usr/bin/csrutil report',
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'/usr/bin/csrutil status',
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'xpcproxy com.apple.Safari.History'
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)
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-- The source of these commands is still a mystery to me.
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OR p.parent = -1
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)
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AND NOT cmd LIKE '-history%'
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AND NOT cmd LIKE '/bin/rm -f /tmp/periodic.%'
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AND NOT cmd LIKE 'rm -f /tmp/locate%/_updatedb%'
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AND NOT cmd LIKE 'rm -f /tmp/locate%/mklocate%/_mklocatedb%'
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AND NOT cmd LIKE 'rm -f /tmp/insttmp_%'
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AND NOT cmd LIKE '/bin/cp %history%sessions/%'
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AND NOT cmd LIKE 'touch -r /tmp/KSInstallAction.%'
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AND NOT cmd LIKE '%find /Applications/LogiTuneInstaller.app -type d -exec chmod 777 {}%'
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AND NOT cmd LIKE '/bin/rm -f /tmp/com.adobe.%.updater/%'
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AND NOT cmd LIKE 'dirname %history'
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