66 lines
2.0 KiB
SQL
66 lines
2.0 KiB
SQL
-- Find processes that run with a lower effective UID than their parent (state-based)
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--
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-- references:
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-- * https://attack.mitre.org/techniques/T1548/001/ (Setuid and Setgid)
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-- * https://cybersecurity.att.com/blogs/labs-research/shikitega-new-stealthy-malware-targeting-linux
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--
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-- related:
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-- * unexpected-privilege-escalation-events.sql
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--
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-- tags: transient state process escalation
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-- platform: darwin
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SELECT
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s.authority AS p0_auth,
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s.identifier AS p0_id,
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p0.uid AS p0_uid,
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-- Child
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p0.pid AS p0_pid,
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p0.path AS p0_path,
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p0.name AS p0_name,
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p0.cmdline AS p0_cmd,
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p0.cwd AS p0_cwd,
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p0.euid AS p0_euid,
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p0_hash.sha256 AS p0_sha256,
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-- Parent
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p0.parent AS p1_pid,
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p1.path AS p1_path,
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p1.name AS p1_name,
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p1_f.mode AS p1_mode,
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p1.euid AS p1_euid,
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p1.cmdline AS p1_cmd,
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p1_hash.sha256 AS p1_sha256,
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-- Grandparent
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p1.parent AS p2_pid,
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p2.name AS p2_name,
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p2.path AS p2_path,
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p2.cmdline AS p2_cmd,
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p2_hash.sha256 AS p2_sha256
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FROM
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processes p0
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LEFT JOIN signature s ON p0.path = s.path
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LEFT JOIN hash p0_hash ON p0.path = p0_hash.path
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LEFT JOIN processes p1 ON p0.parent = p1.pid
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LEFT JOIN file p1_f ON p1.path = p1_f.path
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LEFT JOIN hash p1_hash ON p1.path = p1_hash.path
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LEFT JOIN processes p2 ON p1.parent = p2.pid
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LEFT JOIN hash p2_hash ON p2.path = p2_hash.path
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WHERE
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p0.euid < p0.uid
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AND p0.path NOT IN (
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'',
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'/bin/ps',
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'/Applications/Parallels Desktop.app/Contents/MacOS/Parallels Service',
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'/Library/Application Support/org.pqrs/Karabiner-Elements/bin/karabiner_session_monitor',
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'/Library/DropboxHelperTools/Dropbox_u501/dbkextd',
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'/usr/bin/login',
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'/usr/bin/su',
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'/usr/bin/sudo',
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'/usr/bin/top',
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'/usr/local/bin/doas',
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'/Applications/VMware Fusion.app/Contents/Library/vmware-vmx'
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)
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AND NOT (
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p0.path LIKE '/var/folders/%/T/CanonOFI_TEMP/Data/Software/Install/UniversalInstaller.app/Contents/Frameworks/UIx.framework/Resources/relay'
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AND s.authority = 'Developer ID Application: Canon Inc. (XE2XNRRXZ5)'
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)
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