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osquery-defense-kit/detection/execution/unexpected-execdir-macos.sql

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-- Find programs running from strange directories on macOS
--
-- false positives:
-- - Vendors who are doing weird things that are not in the signature list
--
-- See "execdir-events" for the version that is more likely to catch things
--
-- platform: darwin
-- tags: transient seldom process filesystem state
SELECT DISTINCT
REGEX_MATCH (p0.path, '(.*)/', 1) AS dir,
REPLACE(f.directory, u.directory, '~') AS homedir,
REGEX_MATCH (
REPLACE(f.directory, u.directory, '~'),
'(~/.*?/.*?/.*?/)',
1
) AS top3_homedir,
REGEX_MATCH (
REPLACE(f.directory, u.directory, '~'),
'(~/.*?/)',
1
) AS top_homedir,
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 users u ON p0.uid = u.uid
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
pid
FROM
processes
WHERE
pid > 0
AND REGEX_MATCH (
path,
"^(/System|/usr/libexec/|/usr/sbin/|/usr/bin/|/usr/lib/|/bin/|/Applications|/Library/Apple/|/sbin/|/usr/local/kolide-k2)",
1
) IS NULL
GROUP BY
path
)
AND dir NOT IN (
'/Library/Application Support/Logitech.localized/Logitech Options.localized/LogiMgrUpdater.app/Contents/Resources',
'/Library/DropboxHelperTools/Dropbox_u501',
'/Library/Filesystems/kbfuse.fs/Contents/Resources',
'/Library/Frameworks/Python.framework/Versions/3.10/bin',
'/Library/Google/GoogleSoftwareUpdate/GoogleSoftwareUpdate.bundle/Contents/Helpers.app/Contents/MacOS',
'/Library/Google/GoogleSoftwareUpdate/GoogleSoftwareUpdate.bundle/Contents/Helpers/GoogleSoftwareUpdateAgent.app/Contents/MacOS',
'/Library/Printers/DYMO/Utilities',
'/Library/PrivilegedHelperTools',
'/Library/TeX/texbin',
'/nix/store',
'/nix/var/nix/profiles/default/bin',
'/opt/homebrew/Caskroom/google-cloud-sdk/latest/google-cloud-sdk/bin/gke-gcloud-auth-plugin',
'/opt/usr/bin',
'/opt/X11/bin',
'/opt/X11/libexec',
'/run/current-system/sw/bin'
)
AND homedir NOT IN (
'~/bin',
'~/code/bin',
'~/Downloads/google-cloud-sdk/bin',
'~/go/bin',
'~/Library/Application Support/cloud-code/installer/google-cloud-sdk/bin',
'~/Library/Application Support/dev.warp.Warp-Stable',
'~/Library/Application Support/zoom.us/Plugins/aomhost.app/Contents/MacOS',
'~/.local/bin',
'~/.magefile',
'~/projects/go/bin'
)
AND top_homedir NOT IN (
'~/Applications/',
'~/Applications (Parallels)/',
'~/bin/',
'~/.cargo/',
'~/code/',
'~/Code/',
'~/.steampipe/',
'~/.config/',
'~/dev/',
'~/git/',
'~/go/',
'~/google-cloud-sdk/',
'~/homebrew/',
'~/.kuberlr/',
-- '~/Library/',
-- '~/.local/',
'~/Parallels/',
'~/proj/',
'~/projects/',
'~/.provisio/',
'~/.pulumi/',
'~/.pyenv/',
'~/.rbenv/',
'~/.rustup/',
'~/sigstore/',
'~/src/',
'~/.tflint.d/',
'~/.vscode/',
'~/.vs-kubernetes/'
)
AND top3_homedir NOT IN (
'~/Library/Application Support/BraveSoftware/',
'~/Library/Application Support/com.elgato.StreamDeck/',
'/Library/Application Support/EcammLive',
'~/Library/Application Support/Foxit Software/',
'~/Library/Application Support/OpenLens',
'~/Library/Caches/com.mimestream.Mimestream/',
'~/Library/Caches/com.sempliva.Tiles/',
'~/Library/Caches/snyk/',
'/Library/Developer/Xcode/',
'~/.terraform.d/plugin-cache/registry.terraform.io/'
)
AND dir NOT LIKE '/Applications/%'
AND dir NOT LIKE '/private/tmp/%.app/Contents/MacOS'
AND dir NOT LIKE '/private/tmp/go-build%/exe'
AND dir NOT LIKE '/private/tmp/KSInstallAction.%/Install Google Software Update.app/Contents/Helpers'
AND dir NOT LIKE '/private/tmp/nix-build-%'
AND dir NOT LIKE '/private/tmp/PKInstallSandbox.%/Scripts/com.microsoft.OneDrive.%'
AND dir NOT LIKE '/private/var/db/com.apple.xpc.roleaccountd.staging/%.xpc/Contents/MacOS'
AND dir NOT LIKE '/private/var/folders/%/bin'
AND dir NOT LIKE '/private/var/folders/%/Contents/%'
AND dir NOT LIKE '/private/var/folders/%/d/Wrapper/%.app'
AND dir NOT LIKE '/private/var/folders/%/go-build%'
AND dir NOT LIKE '/private/var/folders/%/GoLand'
AND dir NOT LIKE '%/.terraform/providers/%'
AND dir NOT LIKE '/Volumes/com.getdropbox.dropbox-%'
AND homedir NOT LIKE '~/%/google-cloud-sdk/bin/%'
AND homedir NOT LIKE '~/Library/Caches/ms-playwright/%'
AND homedir NOT LIKE '~/%/node_modules/.pnpm/%'
AND homedir NOT LIKE '~/%/node_modules/.bin/%'
AND homedir NOT LIKE '~/.local/%/packages/%'
AND homedir NOT LIKE '~/Library/Printers/%/Contents/MacOS'
AND homedir NOT LIKE '~/Library/Caches/%/org.sparkle-project.Sparkle/Launcher/%/Updater.app/Contents/MacOS'
AND homedir NOT LIKE '~/Library/Application Support/cloud-code/bin/versions/%'
AND s.authority NOT IN (
'Apple iPhone OS Application Signing',
'Apple Mac OS Application Signing',
'Developer ID Application: Adobe Inc. (JQ525L2MZD)',
'Developer ID Application: Cisco (DE8Y96K9QP)',
'Developer ID Application: CodeWeavers Inc. (9C6B7X7Z8E)',
'Developer ID Application: Corsair Memory, Inc. (Y93VXCB8Q5)',
'Developer ID Application: Docker Inc (9BNSXJN65R)',
'Developer ID Application: Dropbox, Inc. (G7HH3F8CAK)',
'Developer ID Application: Figma, Inc. (T8RA8NE3B7)',
'Developer ID Application: GEORGE NACHMAN (H7V7XYVQ7D)',
'Developer ID Application: Google LLC (EQHXZ8M8AV)',
'Developer ID Application: Hashicorp, Inc. (D38WU7D763)',
'Developer ID Application: Sublime HQ Pty Ltd (Z6D26JE4Y4)',
'Developer ID Application: Logitech Inc. (QED4VVPZWA)',
'Developer ID Application: JetBrains s.r.o. (2ZEFAR8TH3)',
'Developer ID Application: Microsoft Corporation (UBF8T346G9)',
'Developer ID Application: Node.js Foundation (HX7739G8FX)',
'Developer ID Application: Objective Development Software GmbH (MLZF7K7B5R)',
'Developer ID Application: Objective-See, LLC (VBG97UB4TA)',
'Developer ID Application: Opal Camera Inc (97Z3HJWCRT)',
'Developer ID Application: Oracle America, Inc. (VB5E2TV963)',
'Developer ID Application: TablePlus Inc (3X57WP8E8V)',
'Developer ID Application: Tenable, Inc. (4B8J598M7U)',
'Developer ID Application: Valve Corporation (MXGJJ98X76)',
'Developer ID Application: Wireshark Foundation, Inc. (7Z6EMTD2C6)',
'Software Signing'
) -- Locally built executables
AND NOT (
s.identifier = "a.out"
AND homedir LIKE '~/%'
AND p1.name LIKE '%sh'
)
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