If I type sleep 300 20, I’m telling Beacon I want it to sleep up to 300s with a 20% jitter factor. There’s also an opportunity for variation. If I type sleep 30, Beacon will check in every thirty seconds. Use the sleep command to change Beacon’s checkin interval.
BEACON DESIGNER TUTORIAL DOWNLOAD
When Beacon checks in next, it will download these commands, and execute them in turn. Instead, it adds these commands to a queue. It does not immediately execute commands you give it. When you use the shell command–be aware that Beacon is asynchronous. This value will carry over to future commands you execute. Instead, use the cd command in Beacon to change the current directory. This will change the directory in the cmd.exe that gets spawned, without a permanent effect. If you’d like to change the directory, don’t use shell cd. This will spawn a cmd.exe process, execute the command, and relay the output back to you. To execute a command with Beacon and get the output use the shell command. In exercises, I’ve had many situations where Beacon is safe on a host while Meterpreter gets blocked very quickly. Over time, Beacon has become a functional remote administration tool in its own right. The Beacons tab is a quick way to use Beacon, but to get the most out of it, use the Beacon console. You may highlight multiple hosts and task all of them at once. This is a great way to get Poison Ivy or another remote administration tool on to a target system. If you’d like to deliver an executable, choose Task URL to ask Beacon to download and execute a file hosted at some URL. Choose one and Beacon will inject the listener’s stager into memory for you. The right-click menu was made for this use case. In this way, Beacon acts as a life line to get back onto a host. If you lose the Meterpreter session, ask Beacon for another one. Once the initial Beacon comes in, request a Meterpreter session. The idea is this: put together your attack package and use Beacon as the payload.
I originally designed Beacon as the payload to use for a foothold access into a network. The easiest way to interact with Beacon is to right-click on an entry in the Beacons tab and choose one of the options. I place it below Cobalt Strike so I always know which hosts are beaconing back. When I manage beacons during an engagement, I like to press Ctrl+W to open the Beacon tab in its own window. Cobalt Strike will open a tab with a list of all hosts that are beaconing back to you. To interact with your beacons, go to View -> Beacons. Hosts with Beacons do not show as sessions in the Cobalt Strike target area. Since Beacon and Meterpreter use the same stagers, techniques that get Meterpreter past anti-virus will get Beacon past anti-virus too. When you generate an artifact to deliver Beacon, you will need to account for anti-virus. Some artifacts (MS Office Macro attack, Cobalt Strike’s Java Attacks) get past some anti-virus products. It doesn’t matter if this payload is Meterpreter or Beacon. Anti-virus products catch artifacts that try to stage a payload. It’s a common misconception that anti-virus catches the Metasploit Framework’s payloads.
Set LHOST to your IP address, set LPORT to 80, and set PAYLOAD windows/dllinject/reverse_http.
BEACON DESIGNER TUTORIAL UPDATE
Select the Beacon listener and press Choose to update the module options to use Beacon.
Go to Cobalt Strike -> Listeners and press Add. To use Beacon, you must first create a Beacon listener. Reading this post will help you get the most out of Beacon during your operations. This blog post is not a replacement for the documentation, but rather a guide to how I use it. Beacon is a payload in Cobalt Strike that has a lot of communication flexibility.
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