56 lines
1.5 KiB
SQL
56 lines
1.5 KiB
SQL
-- Unusually small programs (events-based)
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--
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-- references:
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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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-- interval: 300
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-- tags: transient process events
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SELECT
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p.pid,
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p.path,
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p.cmdline,
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file.size,
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file.type,
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p.mode,
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p.cwd,
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p.euid,
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p.parent,
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p.syscall,
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pp.path AS parent_path,
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pp.name AS parent_name,
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pp.cmdline AS parent_cmdline,
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pp.euid AS parent_euid,
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hash.sha256 AS child_sha256,
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phash.sha256 AS parent_sha256,
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magic.data AS magic
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FROM
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process_events p
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LEFT JOIN file ON p.path = file.path
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LEFT JOIN processes pp ON p.parent = pp.pid
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LEFT JOIN hash ON p.path = hash.path
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LEFT JOIN hash phash ON pp.path = phash.path
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LEFT JOIN magic ON p.path = magic.path
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WHERE
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p.time > (strftime('%s', 'now') -300)
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AND file.size > 0
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AND file.size < 10000
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AND file.type = 'regular'
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AND p.cwd != ""
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AND p.cwd IS NOT NULL
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AND p.path NOT LIKE '%.sh'
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AND p.path NOT LIKE '%.py'
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AND p.path NOT LIKE '%.rb'
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AND p.path != '/sbin/ldconfig'
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AND NOT (
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p.path LIKE '/Users/%'
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AND magic.data LIKE 'POSIX shell script%'
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)
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AND p.path NOT LIKE '/private/var/folders/%/T/iTerm2-scrip%sh'
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AND p.path NOT LIKE '/home/%/.local/share/Steam/ubuntu12_32/reaper'
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AND p.path NOT LIKE '/home/%/.local/share/Steam/steamapps/common/SteamLinuxRuntime_soldier/pressure-vessel/libexec/steam-runtime-tools-0/i386-linux-gnu-inspect-library'
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-- Removes a false-positive we've seen on Linux, generated through 'runc init'
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AND NOT (
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p.path = "/"
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AND file.size < 8192
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)
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