Splunk Attack Range ⚔️

Purpose 🛡

The Attack Range is a detection development platform, which solves three main challenges in detection engineering:

• 1. The user is able to quickly build a small lab infrastructure as close as possible to a production environment.
• 2. The Attack Range performs attack simulation using different engines such as Atomic Red Team or Caldera in order to generate real attack data.
• 3. It integrates seamlessly into any Continuous Integration / Continuous Delivery (CI/CD) pipeline to automate the detection rule testing process.

Demo 📺

A short demo (< 3 min) which shows the basic functions of the attack range. It builds a testing environment using terraform, walks through the data collected by Splunk. Then attacks it using MITRE ATT&CK Technique T1003 and finally showcases how Splunk Security Content searches are used to detect the attack.

Building 👷‍♂️

Attack Range can be built in three different ways:

• cloud with terraform plus AWS or Azure.
• locally with vagrant and virtualbox
• serverless with terraform and AWS services

Installation 🏗

Using Docker

1. docker pull splunk/attack_range
2. docker run -it splunk/attack_range

AWS and Ubuntu 18.04

1. source <(curl -s 'https://raw.githubusercontent.com/splunk/attack_range/develop/scripts/ubuntu_deploy.sh')
2. aws configure
3. python attack_range.py configure

AWS and MacOS

1. /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/splunk/attack_range/develop/scripts/macos_deploy_aws.sh)" && cd attack_range && source venv/bin/activate
2. aws configure
3. python attack_range.py configure

Azure and MacOS

1. /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/splunk/attack_range/develop/scripts/macos_deploy_azure.sh)" && cd attack_range && source venv/bin/activate
2. az login
3. python attack_range.py configure

Architecture 🏯

The virtualized deployment of Attack Range consists of:

• Windows Domain Controller
• Windows Server
• Windows Workstation
• A Kali Machine
• Splunk Server
• Phantom Server
• Zeek Sensor

Which can be added/removed/configured using attack_range.conf. More machines such as Phantom, Linux server, Linux client, MacOS clients are currently under development.

An approximate cost estimate for running attack_range on AWS can be found here.

Logging

The following log sources are collected from the machines:

• Windows Event Logs (index = win)
• Sysmon Logs (index = win)
• Powershell Logs (index = win)
• Network Logs with Splunk Stream (index = main)
• Attack Simulation Logs from Atomic Red Team and Caldera (index = attack)

Running 🏃‍♀️

Attack Range supports different actions:

• Configuring Attack Range
• Build Attack Range
• Perform Attack Simulation
• Test with Attack Range
• Destroy Attack Range
• Stop Attack Range
• Resume Attack Range
• Dump Log Data from Attack Range

Configure Attack Range

python attack_range.py configure

Build Attack Range

python attack_range.py build

Show Attack Range Infrastructure

python attack_range.py show

Perform Attack Simulation

python attack_range.py simulate -st T1003.001 -t ar-win-dc-default-username-33048

Test with Attack Range

python attack_range.py test -tf tests/T1003_001.yml, tests/T1003_002.yml

Destroy Attack Range

python attack_range.py destroy

Stop Attack Range

python attack_range.py stop

Resume Attack Range

python attack_range.py resume

Dump Log Data from Attack Range

python attack_range.py dump -dn data_dump

Replay Dumps into Attack Range Splunk Server

• Replay previously saved dumps from Attack Range

python attack_range.py replay -dn data_dump [--dump NAME_OF_DUMP]

• default will dump all enabled dumps described in attack_data/dumps.yml
• with optional argument --dump you can specify which dump to replay

python attack_range.py replay -dn data_dump --dump windows_sec_events

Features 💍

• Splunk Server

  • Indexing of Microsoft Event Logs, PowerShell Logs, Sysmon Logs, DNS Logs, ...
  • Preconfigured with multiple TAs for field extractions
  • Out of the box Splunk detections with Enterprise Security Content Update (ESCU) App
  • Preinstalled Machine Learning Toolkit (MLTK)
  • pre-indexed BOTS datasets
  • Splunk UI available through port 8000 with user admin
  • ssh connection over configured ssh key

• Splunk Enterprise Security

  • Splunk Enterprise Security is a premium security solution requiring a paid license.
  • Enable or disable Splunk Enterprise Security in attack_range.conf
  • Purchase a license, download it and store it in the apps folder to use it.

• Splunk Phantom

  • Splunk Phantom is a Security Orchestration and Automation platform
  • For a free development license (100 actions per day) register here
  • Enable or disable Splunk Phantom in attack_range.conf

• Windows Domain Controller & Window Server & Windows 10 Client

  • Can be enabled, disabled and configured over attack_range.conf
  • Collecting of Microsoft Event Logs, PowerShell Logs, Sysmon Logs, DNS Logs, ...
  • Sysmon log collection with customizable Sysmon configuration
  • RDP connection over port 3389 with user Administrator

• Atomic Red Team

  • Attack Simulation with Atomic Red Team
  • Will be automatically installed on target during first execution of simulate
  • Atomic Red Team already uses the new Mitre sub-techniques

• Caldera

  • Adversary Emulation with Caldera
  • Installed on the Splunk Server and available over port 8888 with user admin
  • Preinstalled Caldera agents on windows machines

• Kali Linux

  • Preconfigured Kali Linux machine for penetration testing
  • ssh connection over configured ssh key

Support 📞

Please use the GitHub issue tracker to submit bugs or request features.

If you have questions or need support, you can:

• Join the #security-research room in the Splunk Slack channel
• Post a question to Splunk Answers
• If you are a Splunk Enterprise customer with a valid support entitlement contract and have a Splunk-related question, you can also open a support case on the https://www.splunk.com/ support portal

Contributing 🥰

We welcome feedback and contributions from the community! Please see our contribution guidelines for more information on how to get involved.

Author

• Jose Hernandez
• Patrick Bareiß

Contributors

• Bhavin Patel
• Rod Soto
• Russ Nolen
• Phil Royer
• Joseph Zadeh
• Rico Valdez
• Dimitris Lambrou
• Dave Herrald
• Ignacio Bermudez Corrales
• Peter Gael
• Josef Kuepker
• Shannon Davis
• Mauricio Velazco
• Teoderick Contreras
• Lou Stella