Listeners are the Cobalt Strike component that payloads, such as BEACON, use to connect to a team server. NET, C++, GoLang, or really anything capable of running shellcode. Cobalt Strike does come with default loaders, but operators can also create their own using PowerShell. BEACON is the backdoor itself and is typically executed with some other loader, whether it is the staged or full backdoor. This backdoor runs in memory and can establish a connection to the team server through several methods. The Full backdoor can either be executed through a BEACON stager, by a “loader” malware family, or by directly executing the default DLL export “ReflectiveLoader”.Operators can "stage" their malware by sending an initial small BEACON shellcode payload that only does some basic checks and then queries the configured C2 for the fully featured backdoor. The Stager is an optional BEACON payload.(This is where the malware family got its name.) There are two types of BEACON: Active callback sessions from a target are also called "beacons". Client can be run on Windows, macOS or Linux systems.īEACON is the name for Cobalt Strike’s default malware payload used to create a connection to the team server.Clients can run on the same system as a Team server or connect remotely.
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