mirror of
https://github.com/chainguard-dev/osquery-defense-kit
synced 2025-01-23 22:02:44 +00:00
85 lines
3.3 KiB
SQL
85 lines
3.3 KiB
SQL
-- Detect unusual calls to osascript
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--
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-- This query does some gymnastics, as the information on the parent process may be
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-- found in the 'process' (currently running) or 'process_events' table (recently started).
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--
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-- In the case of a long-running process that was recently terminated, parent information
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-- may not be in either.
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--
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-- false positives:
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-- * none observed, but they are expected
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--
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-- interval: 900
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-- platform: darwin
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-- tags: process events
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SELECT pe.path AS path,
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REGEX_MATCH (pe.path, '.*/(.*)', 1) AS name,
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TRIM(pe.cmdline) AS cmd,
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pe.pid AS pid,
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pe.euid AS euid,
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pe.parent AS parent_pid,
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TRIM(IIF(pp.cmdline != NULL, pp.cmdline, ppe.cmdline)) AS parent_cmd,
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TRIM(IIF(pp.path != NULL, pp.path, ppe.path)) AS parent_path,
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REGEX_MATCH (
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IIF(pp.path != NULL, pp.path, ppe.path),
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'.*/(.*)',
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1
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) AS parent_name,
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TRIM(IIF(pp.path != NULL, hash.sha256, ehash.sha256)) AS parent_hash,
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TRIM(IIF(gp.cmdline != NULL, gp.cmdline, gpe.cmdline)) AS gparent_cmd,
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TRIM(IIF(gp.path != NULL, gp.path, gpe.path)) AS gparent_path,
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REGEX_MATCH (
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IIF(gp.path != NULL, gp.path, gpe.path),
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'.*/(.*)',
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1
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) AS gparent_name,
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IIF(pp.parent != NULL, pp.parent, ppe.parent) AS gparent_pid,
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IIF(
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signature.identifier != NULL,
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signature.identifier,
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esignature.identifier
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) AS parent_identifier,
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IIF(
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signature.authority != NULL,
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signature.authority,
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esignature.authority
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) AS parent_authority
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FROM process_events pe
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LEFT JOIN processes p ON pe.pid = p.pid
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LEFT JOIN processes pp ON pe.parent = pp.pid
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LEFT JOIN process_events ppe ON pe.parent = ppe.pid
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LEFT JOIN processes gp ON gp.pid = pp.parent
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LEFT JOIN process_events gpe ON ppe.parent = gpe.pid
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LEFT JOIN hash ON pp.path = hash.path
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LEFT JOIN hash ehash ON ppe.path = ehash.path
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LEFT JOIN signature ON pp.path = signature.path
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LEFT JOIN signature esignature ON ppe.path = esignature.path
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WHERE pe.path IN ('/usr/bin/osascript', '/usr/bin/osacompile')
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AND pe.time > (strftime('%s', 'now') -900)
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AND NOT (
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p.euid > 500
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AND (
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cmd IN ('osascript -e user locale of (get system info)')
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OR cmd LIKE '%"CFBundleName" of property list file (app_path & ":Contents:Info.plist")'
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OR cmd LIKE 'osascript -e set zoomStatus to "closed"%'
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OR cmd LIKE 'osascript -e%tell application "System Preferences"%reveal anchor "shortcutsTab"%"com.apple.preference.keyboard"'
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OR cmd LIKE 'osascript -e tell application "zoom.us"%'
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OR cmd LIKE 'osascript openChrome.applescript http://127.0.0.1:%'
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OR cmd LIKE 'osascript openChrome.applescript http%://localhost%'
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OR cmd LIKE '/usr/bin/osascript /Users/%/Library/Caches/com.runningwithcrayons.Alfred/Workflow Scripts/%'
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OR cmd LIKE '/usr/bin/osascript /Users/%/osx-trash/trashfile.AppleScript %'
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OR cmd LIKE '/usr/bin/osascript /Applications/Amazon Photos.app/Contents/Resources/quit_and_restart_app.scpt /Applications/Amazon Photos.app com.amazon.clouddrive.mac%'
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OR parent_cmd LIKE '%/bin/gcloud auth%login'
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OR parent_cmd LIKE '%/google-cloud-sdk/lib/gcloud.py auth%login'
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OR parent_cmd LIKE '% /opt/homebrew/bin/jupyter%notebook'
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OR parent_name IN ('yubikey-agent')
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OR (
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parent_authority = 'Developer ID Application: VNG ONLINE CO.,LTD (CVB6BX97VM)'
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AND cmd = 'osascript -ss'
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)
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)
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)
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GROUP BY pe.pid
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