Part 1 - Remote Access Trojan Generation with MSFVenom

In the past there was msfpayload and msfencode that served the purpose of creating a malicious payload under the metasploit framework.

However, like all good things, they needed an upgrade and ended up being combined into msfvenom (feisty sounding name). So basically msfvenom allows pentesters to create a payload and then encode it with their selected encoder without having to port the generated msfpayload to msfencode. This makes for a more compact framework with the integration of these modules.

The video below shows a demonstration of how to create a remote access trojan (RAT) that is attached to a functional calculator.exe program. In most cases, when we do not have our own executable to attach the malicious code to, we end up using the metasploit templates which are known to most antiviruses.

It's quite simple to download the calculator.exe program from the internet (or any specific executable file the pentester wishes to use.

Please note that this tutorial and its imparted knowledge are strictly for educational purposes only.

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So a few weeks back after a class I'd taken with them, a number of my students told me of a particular malware that was affecting students' computers, in particular, computers running Windows OS. According to them, if you tried to open a folder that was residing on the USB stick with the malware, the malware would delete some of your files and convert folders into executable files. Granted, the likelihood of a random folder miraculously transforming into a single executable file was kinda "out there" but I figured I'd check it out and use that as a teaching moment for those interested in venturing into malware analysis. So I tasked them to bring me a sample of the malware so I could take a look at it and maybe figure it out. I advised one of them to download DumpIt and then extract the memory dump from an infected computer using a clean flash disk and then bring it to me. How do you do this exactly? here's how: Download DumpIt . It's a portable...

Robsec

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