Category Archives: ForFunAndWumbos

Jun 02 2021
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ForFunAndWumbos, Incident Response, Logging, Threat Hunting, Tools

Part 3: Intro to threat hunting – Hunting the imposter among us with the Elastic stack and Sysmon

This blog post series is for anyone who has ever had an interest in threat hunting but did not have the knowledge of how or where to start, what tools they need, or what to hunt for. In this blog post, I will introduce an informal threat hunting process by hunting the APT-style attack performed during the red team exercise in the previous blog post. The theme of this blog post is to demonstrate how to hunt and detect malicious activity at each stage of the Mandiant Attack Lifecycle to create a fundamental framework for hunting adversaries. This blog post is a written adaptation of my DefCon 2020 Blue Team village workshop. It will utilize the same ideas and techniques used for that workshop reiterating specifics and points for the greater InfoSec community to use.

In this blog series, we have a fictitious advanced persistent threat (APT) code-named Goofball. They have been known to steal intellectual property and the Hackinglab corporation just released a press statement about a new widget that will revolutionize the world. This blog post is going to embark on a quest to hunt for the existence of Goofball in the Hackinglab corporation network. Additionally, this quest will introduce you to an informal threat hunting process to demonstrate the tools and techniques using Sysmon and the Elastic stack. The hope is that this informal process demonstrates how to apply a threat hunting mindset to search for malicious activity in your environment but also understand your findings to investigate further. 

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Dec 25 2019
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ForFunAndWumbos, How to red team, PoC, Red Teaming, Tools

PoC: Exfiltrating data on macOS with Folder Actions

This blog post is going to demonstrate a proof of concept (PoC) to exfiltrate data from macOS with a built-in functionality called Folder Actions. The Folder Actions functionality triggers Applescripts to execute code when certain conditions (creating files, deleting files, etc.) occur by interactions with Finder. This functionality provides a method to exfiltrate data without the need for a shell to execute the actions. The Applescript provided below will utilize this functionality to monitor for new files in the user’s Download folder and, upon detection of a new file, exfiltrate a copy of the file to a remote server.

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Feb 07 2019
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ForFunAndWumbos, PoC, Red Teaming, Tools

PoC: Using Cloudflare as an HTTP C2 with Powershell Empire

For a red teamer, one of the biggest challenges is utilizing a command-and-control(C2) server without being discovered and blocked. This is because the detected traffic is not coming from a trusted source. One way around this is to use CloudFlare’s free HTTP reverse proxy service as your C2. By pivoting all HTTP traffic through these proxies, it becomes much harder for a network defender to detect malicious intent.

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Dec 07 2018
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ForFunAndWumbos, Honeypot, Malware Analysis, Network Security, Threat Intelligence, Tools

Part 1: Running TOR exit node – Install/Setup exit node

In this blog post series, I will be covering how to setup a Tor exit node for security research. The educational goals of this series is to learn more about network security monitoring, logging, and enrichment to create a threat intelligence pipeline. My exit node will collect data that will be ingested and returned to the community as intelligence.

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Jan 13 2018
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ForFunAndWumbos, Incident Response, Red Teaming, Threat Hunting, Tools

Install/Setup MITRE Caldera the automated cyber adversary emulation system

In this blog post I will be covering how to setup and utilize MITRE’s new tool called Caldera. Caldera is a cyber adversary emulation system that operates on a server/agent model. On the server you can create adversary campaigns that are deployed to your agents. Your agents will periodically call back with their results and progress. Let’s begin!

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Oct 15 2017
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ForFunAndWumbos, Red Teaming, Tools

Part 3: How to Red Team – Setting up a red team infrastructure

In this post I thought I would demonstrate how to setup an environment for a red teamer. PLEASE take this environment with a gain of salt because everyone will have a different setup!!! This guide is to show the basics and hopefully a template based on the Armitage/Cobalt Strike architecture. If your interested in the pinnacle of red team setups take a look at Alex Levinson’s post about the CCDC Red team or the blog Room 362 by Rob Fuller.

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Jul 01 2017
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ForFunAndWumbos

Creating macOS VM on VMware Fusion

I had no idea that Mac OSX users had the ability to create Mac OSX VMs with VMware Fusion. Say that last part five times fast lol. I am going to walk you through the process of creating a macOS(Sierra) VM on my laptop. I would like to give original credit to VMware but I want to share this with my readers. The ability to create Mac OSX VMs allows me to analyze Mac OSX malware in a safe environment, whoop whoop.

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May 30 2017
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ForFunAndWumbos, Red Teaming, Tools

Part 2: How to red team – Metasploit framework

In this post I am going to briefly cover the exploitation process with the  Metasploit framework. A framework is defined as a real or conceptual structure intended to serve as a support or guide for the building of something that expands the structure into something useful. The Metasploit framework allows red teamers to configure an exploit, choose a payload, an encoding technique to obfuscate the payload, and post-exploitation modules after access is gained. The next couple of sections are going to walk through the process of exploitation. I believe the Metasploit approach is a template to know because other frameworks and tools follow the same flow. Continue reading →

May 29 2017
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ForFunAndWumbos, Red Teaming

Part 1: How to Red Team – Scanning and Enumeration

I have to be honest that my red team skills could use some improvement. I firmly believe that red teaming is a skill and a mindset that people have. I believe some people are naturally born with this mindset and others develop it, I am a developer :).Currently, I am aspiring to become an incident responder because the thrill of the hunt seems like A LOT of fun to me. But to be an effective incident responder I have to understand my adversary and their strategies.

This blog post series will include my approach of learning how to become a red teamer in a competition type of environment. Now my reasoning for this is because I have the ability to compete in multiple competitions as red teamer as a college student. Additionally, I hope to periodically return to these posts and update them with new tactics and tools that I find and use.

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Jan 24 2017
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ForFunAndWumbos, Incident Response, System Administration, Tools

Intro to the ELK Stack on CentOS 7

This is a two part series on setting up an ELK stack to receive syslog and in the next post Bro logs. The ELK stack is an awesome collection of software but a complicated MumboJumboCombo of components. I wanted to help break that barrier for beginners and to help explain how each component works. So stick with me on this two part series! I would like to give credit to this DigitalOcean post writer for the ELK stack write-up which I’ll be referencing. Additionally my Github contains a script to setup the ELK stack for CentOS 7 64-bit based on the guide below.

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Nov 22 2016
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ForFunAndWumbos, System Administration, Tools, Uncategorized

RC3 Fall 2016 CTF Infrastructure

 

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In this blog post I will be walking you through how I setup my club’s CTF infrastructure on AWS. I take great pride as the RC3 CTF infrastructure captain (with a bit of an inflated ego 🙂 ) that my infrastructure as a whole never had any downtime! Additionally, our CTF attracted a 1,000 users over the course of a weekend, which was a great stress test for my infrastructure.

This post consists of the following AWS services which are EC2, S3, VPCs, Route 53, RDS, and IAM. Our infrastructure utilized software and services such as CentOS, Ubuntu, HAProxy, Let’s Encrypt, CTFd, Bro, and Nginx/uwsgi. Please keep in mind this guide is a sys admin guide and not a security guide. Some of the security measures implemented in the infrastructure have been left out of this guide to thwart individuals from taking advantage of this build in the future. Without further ado, here we go on the wild ride of creating a CTF cloud computing infrastructure in Amazon’s Web Services (AWS) :).

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