packs: Update reverse shell query pack to check for a valid remote_port#7567
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mike-myers-tob merged 1 commit intoosquery:masterfrom Apr 29, 2022
raj3shp:refine_pack_osx_attacks
Merged
packs: Update reverse shell query pack to check for a valid remote_port#7567mike-myers-tob merged 1 commit intoosquery:masterfrom raj3shp:refine_pack_osx_attacks
mike-myers-tob merged 1 commit intoosquery:masterfrom
raj3shp:refine_pack_osx_attacks
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Apr 29, 2022
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Hi,
I would like to make a minor improvement to avoid false positives for
Behavioral_Reverse_Shellquery in osx-attacks pack. Certain build processes are spawned by IDEs such as Xcode which do not have any open files, but have an open socket that is not a network socket which results in remote_port being 0 and remote_address empty.In this PR, I basically add a check for
process_open_sockets.remote_port > 0to avoid all possible false positives which do not indicate a reverse shell. We can confirm it's safe considering port0is reserved and cannot be used for network sockets.