Add missing files
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-- Programs which are writing an unusually large amount of data
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--
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-- Can be used to detect ransomware
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--
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-- false positives:
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-- * Package managers
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-- * Backup software
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--
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-- references:
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-- * https://attack.mitre.org/tactics/TA0009/ (Collection)
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--
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-- tags: transient process
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SELECT
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p.name,
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p.path,
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p.pid,
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p.cmdline,
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p.on_disk,
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p.parent,
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p.start_time,
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hash.sha256,
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p.disk_bytes_written,
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p.cwd,
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(strftime('%s', 'now') - start_time) AS age,
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disk_bytes_written / (strftime('%s', 'now') - start_time) AS bytes_per_second
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FROM
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processes p
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LEFT JOIN hash ON p.path = hash.path
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WHERE
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bytes_per_second > 2500000
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AND age > 120
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AND pid > 2
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AND p.path NOT IN (
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'/bin/bash',
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'/opt/homebrew/bin/qemu-system-aarch64',
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'/usr/bin/aptd',
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'/usr/bin/bash',
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'/usr/bin/bwrap',
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'/usr/bin/curl',
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'/usr/bin/dockerd',
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'/usr/bin/fish',
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'/usr/bin/gnome-shell',
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'/usr/bin/make',
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'/usr/bin/melange',
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'/usr/bin/qemu-system-x86_64',
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'/usr/bin/yay',
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'/usr/bin/zsh',
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'/usr/lib64/thunderbird/thunderbird',
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'/usr/libexec/coreduetd',
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'/usr/libexec/packagekitd',
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'/usr/libexec/rosetta/oahd',
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'/usr/libexec/secd',
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'/usr/libexec/sharingd',
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'/usr/lib/flatpak-system-helper',
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'/usr/lib/systemd/systemd',
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'/usr/lib/systemd/systemd-journald',
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'/usr/sbin/screencapture'
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)
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AND NOT (
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name LIKE 'jbd%/dm-%'
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AND on_disk = -1
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)
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AND NOT (
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name = 'bindfs'
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AND cmdline LIKE 'bindfs -f -o fsname=%'
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)
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AND NOT (
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name = 'btrfs-transaction'
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AND on_disk = -1
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)
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AND NOT (
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name = 'kernel_task'
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AND p.path = ''
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AND parent IN (0, 1)
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AND on_disk = -1
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)
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AND NOT (
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name = 'launchd'
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AND p.path = '/sbin/launchd'
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AND parent = 0
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)
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AND NOT (
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name = 'logd'
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AND cmdline = '/usr/libexec/logd'
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AND parent = 1
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)
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AND NOT (
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name = 'aptd'
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AND cmdline = '/usr/bin/python3 /usr/sbin/aptd'
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)
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AND NOT name IN (
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'chrome',
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'com.apple.MobileSoftwareUpdate.UpdateBrainService',
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'containerd',
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'esbuild',
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'firefox',
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'go',
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'goland',
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'java',
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'launcher',
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'gopls',
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'jetbrains-toolb',
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'slack',
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'slack',
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'wineserver'
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)
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AND p.path NOT LIKE '/Applications/%.app/Contents/%'
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AND p.path NOT LIKE '/home/%/.local/share/Steam'
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AND p.path NOT LIKE '/nix/store/%/bin/%sh'
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AND p.path NOT LIKE '/nix/store/%/bin/nix'
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AND p.path NOT LIKE '/System/Applications/%'
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AND p.path NOT LIKE '/System/Library/%'
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AND p.path NOT LIKE '/usr/local/kolide-k2/bin/osqueryd-updates/%/osqueryd'
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AND p.path NOT LIKE '/nix/store/%kolide-launcher-%/bin/launcher'
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@ -0,0 +1,34 @@
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-- Find database exports. Will need tuning based on your table names.
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--
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-- false positives:
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-- * none observed
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--
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-- references:
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-- * https://attack.mitre.org/techniques/T1530/ (Data from Cloud Storage Object )
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--
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-- platform: darwin
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-- tags: persistent filesystem spotlight
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SELECT
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f.path,
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f.size,
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datetime(f.btime, 'unixepoch') AS file_created,
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magic.data
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FROM
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file f
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JOIN mdfind ON mdfind.path = f.path
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LEFT JOIN magic ON f.path = magic.path
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WHERE
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(
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(
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mdfind.query = 'kMDItemFSName == ''*enforce*'' && kMDItemTextContent == ''CREATE TABLE'''
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)
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OR (
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mdfind.query = 'kMDItemFSName == ''*iam*'' && kMDItemTextContent == ''CREATE TABLE'''
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)
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OR (
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mdfind.query = 'kMDItemFSName == ''*tenant*'' && kMDItemTextContent == ''CREATE TABLE'''
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)
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)
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AND f.path NOT LIKE '%.json'
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AND f.path NOT LIKE '%.log'
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AND f.size > 32768
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@ -0,0 +1,18 @@
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-- Retrieves all the open sockets per process in the target system.
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--
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-- tags: postmortem
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-- platform: posix
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SELECT DISTINCT
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pid,
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family,
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protocol,
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local_address,
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local_port,
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remote_address,
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remote_port,
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path
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FROM
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process_open_sockets
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WHERE
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path <> ''
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or remote_address <> '';
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