This 2 nd-stage component of Empyre is the persistent agent, that once installed will complete the infection and affords a remote attacker continuing access to an infected host. However, this file was likely just the second-stage component of Empyre (though yes, the attackers could of course download and executed something else). Unfortunately this file is now inaccessible. Specifically the lib/common/stagers.py file:ĮmPyre is a "pure Python post-exploitation agent built on cryptologically-secure communications and a flexible architecture." Ok, so the attackers are using an open-source multi-stage post-exploitation agent.Īs mentioned above, the goal of the first stage python code is to download and execute a second stage component from. RC4 decrypts this payload (key: fff96aed07cb7ea65e7f031bd714607d)ĭoes python code look familiar? Yes! It's taken, almost verbatim from the open-source EmPyre project.checks to make sure LittleSnitch is not running.The decoded python contained in the auto-run macro, is pretty simple to read. ![]() Use strict use warnings use IO::Socket use IPC::Open2 my$l sub G], fromlist = ).build_opener()
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