osquery-defense-kit/detection/evasion/unexpected-ld-so-files-linu...

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2022-09-21 11:42:51 +00:00
-- If you have Augeas available, you may want to use that in conjunction with this more limited check.
SELECT
file.path,
uid,
gid,
mode,
file.mtime,
file.size,
hash.sha256,
CONCAT (file.path, ',', mode, ',', size, ',', sha256) AS exception_key
FROM
file
LEFT JOIN hash on file.path = hash.path
LEFT JOIN magic ON file.path = magic.path
WHERE
(
file.path IN ('/etc/ld.so.conf', '/etc/ld.so.preload')
OR file.path LIKE "/etc/ld.so.conf.d/%"
OR file.path LIKE "/etc/ld.so.conf.d/.%"
)
AND file.filename NOT IN ('.', '..')
AND exception_key NOT IN (
'/etc/ld.so.conf,0644,117,dad04a370e488aa85fb0a813a5c83cf6fd981ce01883fc59685447b092de84b5',
'/etc/ld.so.conf,0644,28,239c865e4c0746a01f82b03d38d620853bab2a2ba8e81d6f5606c503e0ea379f',
'/etc/ld.so.conf,0644,34,d4b198c463418b493208485def26a6f4c57279467b9dfa491b70433cedb602e8',
'/etc/ld.so.conf.d/cuda.conf,0644,66,a65f7d96e2447eb40b1be9586b90eb0bd776a8938c93d21f9606d2880b548b28',
'/etc/ld.so.conf.d/dyninst-x86_64.conf,0644,19,a4c740c1f59176d816ba18d429ba823317d3db416accf6d79a9cb0ac845d9d50',
'/etc/ld.so.conf.d/fakeroot-x86_64-linux-gnu.conf,0644,38,af7edc777dd224bade078ba540538444db69856533c02e18a7f9fbbdd23bd181',
'/etc/ld.so.conf.d/fakeroot.conf,0644,21,564c4c4d369d005702d825d34edc5e5568cb1ab6ee1b19fa03d0d672fb8b3aee',
'/etc/ld.so.conf.d/i386-linux-gnu.conf,0644,168,023231b8d6d21a7f4b1a59b875576604395041c814c0fd640d4a1d3d29455e6a',
'/etc/ld.so.conf.d/lib32-glibc.conf,0644,11,c27424154a6096ae32c0824b785e05de6acef33d9224fd6147d1936be9b4962b',
'/etc/ld.so.conf.d/libc.conf,0644,44,90d4c7e43e7661cd116010eb9f50ad5817e43162df344bd1ad10898851b15d41',
'/etc/ld.so.conf.d/libiscsi-x86_64.conf,0644,17,fa3839c3cb893d3a589a020a0a9a010de1332b8385ee8139660e2da8bcc932a3',
'/etc/ld.so.conf.d/llvm13-x86_64.conf,0644,22,4da62e9ec76b030c527e2ea87ccfab1baeff7d0f9092f980231e49961bb97de0',
'/etc/ld.so.conf.d/opencollada.conf,0644,21,2fc9656a2b881ca4528416daa91fc525adaa97d73e96a18b41aa7856270eba1f',
'/etc/ld.so.conf.d/pipewire-jack-x86_64.conf,0644,30,cf4cb69feaa8ec8b99558c4e1123518831b3c56488981cbc34a662fe218ef221',
'/etc/ld.so.conf.d/tix-x86_64.conf,0644,18,b2ef4843990ded5fd96e417fc08027a785fac59bd70eca6a26dd7b057542273a',
'/etc/ld.so.conf.d/x86_64-linux-gnu.conf,0644,100,f03e4740e6922b4f4a1181cd696b52f62f9f10d003740a8940f7121795c59c98'
)