osquery-defense-kit/detection/evasion/hidden-home-libappsupport.sql
Thomas Stromberg 41d83350a1
make reformat
2023-05-08 13:20:47 -04:00

89 lines
2.6 KiB
SQL

-- Find unexpected hidden files in a users Application Support directory
--
-- references:
-- * https://objective-see.org/blog/blog_0x73.html
--
-- false positives:
-- * programs with unusual self-updaters
--
-- tags: persistent state filesystem
-- platform: darwin
SELECT
file.path,
file.filename,
file.type,
file.mode,
file.size,
file.mtime,
file.uid,
file.ctime,
REPLACE(file.path, u.directory, '~') AS homepath,
REPLACE(file.directory, u.directory, '~') AS homedir,
file.gid,
hash.sha256,
magic.data,
signature.identifier,
signature.authority
FROM
file
JOIN hash ON file.path = hash.path
JOIN users u ON file.uid = u.uid
JOIN magic ON file.path = magic.path
JOIN signature ON file.path = signature.path
WHERE
file.path IN (
SELECT
path
FROM
file
WHERE
(
path LIKE '/Users/%/Library/Application Support/%/.%'
OR path LIKE '/Users/%/Library/Application Support/.%'
)
AND NOT file.filename IN ('.', '..', '.updaterId', '.DS_Store')
AND size > 0
)
AND NOT homedir IN (
'~/Library/Application Support/Adobe',
'~/Library/Application Support/Beeper',
'~/Library/Application Support/com.tinyapp.TablePlus',
'~/Library/Application Support/Jabra Direct',
'~/Library/Application Support/discord',
'~/Library/Application Support/Keybase',
'~/Library/Application Support/com.intelliscapesolutions.caffeine',
'~/Library/Application Support/com.psiexams.psi-bridge-secure-browser',
'~/Library/Application Support/GitHub Desktop',
'~/Library/Application Support/Loom',
'~/Library/Application Support/ZaloApp',
'~/Library/Application Support/ZaloPC',
'~/Library/Application Support/com.bohemiancoding.sketch3',
'~/Library/Application Support/DropboxElectron',
'~/Library/Application Support/Docker Desktop',
'~/Library/Application Support/Slack',
'~/Library/Application Support/Code',
'~/Library/Application Support/lghub',
'~/Library/Application Support/com.operasoftware.Opera',
'~/Library/Application Support/com.apple.spotlight',
'~/Library/Application Support/Lens'
)
AND NOT homepath IN (
'~/Library/Application Support/.Shadowland5.5',
'~/Library/Application Support/.com.contextsformac.Contexts.plist',
'~/Library/Application Support/.settings'
)
AND NOT homepath LIKE '~/Library/Application Support/.syssettings%'
-- Capture One
AND NOT (
file.mode = "0666"
AND size > 2000
AND size < 4000
AND REGEX_MATCH (
".085520434CB685DE008C8DBAB6A46215",
"^(\.[0-9A-Z]{32})$",
0
) != ""
)
GROUP BY
file.path