osquery-defense-kit/detection/evasion/unexpected-alf-exceptions-m...

144 lines
7.5 KiB
SQL

-- macOS application layer firewall (ALF) service exceptions.
--
-- false positives:
-- * locally built software
--
-- tags: persistent state filesystem
-- platform: darwin
SELECT
ae.path,
ae.state,
file.mtime,
file.ctime,
file.uid,
file.directory,
file.size,
file.type,
hash.sha256,
signature.identifier,
signature.authority,
CONCAT (
signature.authority,
',',
signature.identifier,
',',
ae.path,
',',
MIN(file.uid, 501)
) AS exception_key
FROM
alf_exceptions ae
LEFT JOIN file ON ae.path = file.path
LEFT JOIN hash ON ae.path = hash.path
LEFT JOIN signature ON ae.path = signature.path
WHERE
-- Filter out stock exceptions to decrease overhead
ae.path NOT IN (
'/System/Library/CoreServices/UniversalControl.app/',
'/System/Library/PrivateFrameworks/Admin.framework/Versions/A/Resources/readconfig',
'/System/Library/PrivateFrameworks/EmbeddedOSInstall.framework/Versions/A/XPCServices/EmbeddedOSInstallService.xpc/',
'/usr/bin/nmblookup',
'/usr/libexec/bootpd',
'/usr/libexec/configd',
'/usr/libexec/discoveryd',
'/usr/libexec/xartstorageremoted',
'/usr/sbin/mDNSResponder',
'/usr/sbin/racoon'
)
-- Ignore files that ahve already been removed
AND file.filename NOT NULL
AND exception_key NOT IN (
',a.out,/opt/homebrew/Caskroom/google-cloud-sdk/latest/google-cloud-sdk/bin/kubectl,501',
'Apple Mac OS Application Signing,com.anydo.mac,/Applications/Anydo.app/,0',
'Apple Mac OS Application Signing,com.apple.garageband10,/Applications/GarageBand.app/,0',
'Apple Mac OS Application Signing,com.utmapp.QEMULauncher,/Applications/UTM.app/Contents/XPCServices/QEMUHelper.xpc/Contents/MacOS/QEMULauncher.app/,0',
'Apple Mac OS Application Signing,io.tailscale.ipn.macos.network-extension,/Applications/Tailscale.app/Contents/PlugIns/IPNExtension.appex/,0',
',,/Applications/Google%20Chrome.app/,',
',,/Applications/IntelliJ%20IDEA.app/,',
',,/Applications/ProtonMail%20Bridge.app/,',
',,/Applications/Visual%20Studio%20Code.app/,',
',,/Applications/Visual%20Studio%20Code.app/Contents/Frameworks/Code%20Helper.app/,',
'Developer ID Application: Bohemian Coding (WUGMZZ5K46),com.bohemiancoding.sketch3,/Applications/Sketch.app/,501',
'Developer ID Application: Bohemian Coding (WUGMZZ5K46),com.bohemiancoding.SketchMirrorHelper,/Applications/Sketch.app/Contents/XPCServices/SketchMirrorHelper.xpc/,501',
'Developer ID Application: Brother Industries, LTD. (5HCL85FLGW),com.brother.utility.WorkflowAppControlServer,/Library/Printers/Brother/Utilities/Server/WorkflowAppControl.app/,0',
'Developer ID Application: Corsair Memory, Inc. (Y93VXCB8Q5),com.elgato.WaveLink,/Applications/WaveLink.app/,0',
'Developer ID Application: Cypress.Io, Inc. (7D655LWGLY),com.electron.cypress,/Users/garrying/Library/Caches/Cypress/12.9.0/Cypress.app/,501',
'Developer ID Application: Dropbox, Inc. (G7HH3F8CAK),com.getdropbox.dropbox,/Applications/Dropbox.app/,501',
'Developer ID Application: JetBrains s.r.o. (2ZEFAR8TH3),com.jetbrains.goland,/Applications/GoLand.app/,501',
'Developer ID Application: JetBrains s.r.o. (2ZEFAR8TH3),com.jetbrains.pycharm,/Applications/PyCharm.app/,501',
'Developer ID Application: Opentest, Inc. (QGD2ZPXZZG),com.loom.desktop,/Applications/Loom.app/,501',
'Developer ID Application: RescueTime, Inc (FSY4RB8H39),com.rescuetime.RescueTime,/Applications/RescueTime.app/,0',
'Developer ID Application: Sonos, Inc. (2G4LW83Q3E),com.sonos.macController,/Applications/Sonos.app/,501',
'Developer ID Application: Spotify (2FNC3A47ZF),com.spotify.client,/Applications/Spotify.app/,501',
'Developer ID Application: Tailscale Inc. (W5364U7YZB),io.tailscale.ipn.macsys.network-extension,/Library/SystemExtensions/A30AF854-E980-4345-A658-17000BF66D00/io.tailscale.ipn.macsys.network-extension.systemextension/,0',
'Developer ID Application: VNG ONLINE CO.,LTD (CVB6BX97VM),com.vng.zalo,/Applications/Zalo.app/,501',
'Developer ID Application: Voicemod Sociedad Limitada. (S2MC4XQDSM),net.voicemod.desktop,/Applications/Voicemod.app/,0',
',dnsmasq,/opt/homebrew/Cellar/dnsmasq/2.88/sbin/dnsmasq,0',
',iodined-55554944d1ffcb236a84363d9b667be6a1742a17,/usr/local/sbin/iodined,501',
',java,/opt/homebrew/Cellar/openjdk/19/libexec/openjdk.jdk/Contents/Home/bin/java,501',
',org.python.python,/opt/homebrew/Cellar/python@3.10/3.10.9/Frameworks/Python.framework/Versions/3.10/Resources/Python.app/,501',
',org.python.python,/opt/homebrew/Cellar/python@3.11/3.11.2_1/Frameworks/Python.framework/Versions/3.11/Resources/Python.app/,501',
'Software Signing,com.apple.audio.InfoHelper,/System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.InfoHelper.xpc/,0',
'Software Signing,com.apple.controlcenter,/System/Library/CoreServices/ControlCenter.app/,0',
'Software Signing,com.apple.Music,/System/Applications/Music.app/,0',
'Software Signing,com.apple.nc,/usr/bin/nc,0',
'Software Signing,com.apple.WebKit.Networking,/System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.Networking.xpc/,0',
'Software Signing,com.apple.WebKit.Networking,/System/Volumes/Preboot/Cryptexes/OS/System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.Networking.xpc/,0',
'Software Signing,com.apple.xartstorageremoted,/usr/libexec/xartstorageremoted,0',
'/System/Volumes/Preboot/Cryptexes/OS/System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.Networking.xpc/',
',,/usr/local/sbin/iodined,501'
)
AND NOT exception_key LIKE ',a.out,/opt/homebrew/Cellar/podman/%/libexec/podman/gvproxy,501'
AND NOT exception_key LIKE ',a.out,/private/var/folders/%/T/GoLand/%,501'
AND NOT exception_key LIKE ',a.out,/Users/%/GolandProjects/documentation-code-examples/debuggingTutorial/myApp,501'
AND NOT exception_key LIKE ',node,/opt/homebrew/Cellar/nvm/%/versions/node/v%/bin/node,501'
AND NOT exception_key LIKE ',java,/opt/homebrew/Cellar/openjdk/%/libexec/openjdk.jdk/Contents/Home/bin/java,501'
AND NOT (
signature.identifier LIKE 'cargo-%'
AND ae.path LIKE '/Users/%/.rustup/%'
)
AND NOT (
signature.identifier LIKE 'fake-%'
AND ae.path LIKE '%/exe/fake'
)
AND NOT (
signature.identifier LIKE 'mariadbd-%'
AND ae.path LIKE '/opt/homebrew/%/mariadbd'
)
AND NOT (
signature.identifier = 'netcat'
AND ae.path LIKE '/Users/%/homebrew/Cellar/netcat/%/bin/netcat'
)
AND NOT (
signature.identifier = 'syncthing'
AND ae.path LIKE '/nix/store/%-syncthing-%/bin/syncthing'
)
AND NOT (
ae.path LIKE '/Users/%/Library/Application%20Support/Steam/Steam.AppBundle/Steam/'
)
AND NOT (
signature.authority = ''
AND signature.identifier = 'org.chromium.Chromium'
AND ae.path LIKE '/Users/%/Library/pnpm/global/%/.pnpm/carlo@%/node_modules/carlo/lib/.local-data/mac-%/chrome-mac/Chromium.app/'
)
AND NOT (
(
signature.identifier = 'a.out'
OR signature.identifier LIKE '%-%'
)
AND file.uid > 500
AND (
file.directory LIKE '/opt/homebrew/Cellar/%/bin'
OR file.directory LIKE '/Users/%/bin'
OR file.directory LIKE '/Users/%/code/%'
OR file.directory LIKE '/Users/%/src/%'
OR file.directory LIKE '/Users/%/sigstore/%'
OR file.directory LIKE '/Users/%/node_modules/.bin/%'
OR file.directory LIKE '/Users/%/git/%'
OR file.directory LIKE '/Users/%/%-cli'
OR file.directory LIKE '/private/var/folders/%/T/go-build%/exe'
)
)
GROUP BY
exception_key