Auscert Workshop 2022

At Auscert 2022, The Velociraptor team gave a 4 hour workshop and a Presentation. Below you will find the slides.

Talk: I can see you! - Improving detection efficiency on the endpoint…

With the rise of cybercrime and reduced dwell time before compromise, the importance of fast and effective incident response and detection has never been more evident. Much of current detection technology relies on collecting selected events from the endpoint, forwarding them to a central SIEM, where data mining techniques are applied on large volumes of data to detect compromises. This approach is limited in both scalability and in the limited types of forwarded events available to the SIEM for detection.

In this talk we explore some less common event sources, in particular, the Event Tracing for Windows (ETW) providers that go further than typical process/registry modifications logs. To illustrate, we describe some case studies, such as process parent spoofing, which is difficult to detect using traditional methods.

Tapping into ETW providers increases the total volume of forwarded. To address this problem, the industry is moving towards on-host detection. Inspecting the events on the endpoint itself reduces the need to forward all events, whilst increasing the detection efficiency.

Finally, we cover some of the limitations of ETW as a detection technology. Like all technologies, ETW can also be used to advantage the adversaries. We discuss some of the countermeasures to malicious ETW use and how to detect such use in practice.

For this talk, we look at the Velociraptor open-source endpoint visibility platform as an illustrative example.

The takeaway for attendees:

  1. Industry trend is to move more of the detection and filtering to the endpoint instead of simply forwarding large volumes of logs to a central SIEM

  2. There are many more useful event sources than the traditional process/registry modification events available through ETW

  3. ETW is not a magic bullet - it has some practical limitations but it is useful to understand and apply for modern detection.

Workshop: Digging Deeper with Velociraptor (Half Day)

With an increasingly mobile and remote workforce the old manual approach to incident response does not scale. The dwell time of ransomware operators is now measured in days and weeks, making the need for fast effective response critical.

Welcome to the age of Velociraptor - the new open source DFIR visibility tool everyone has been talking about! Velociraptor is powered by a flexible and powerful query language, allowing you to rapidly go from an advisory or a new hunting idea to getting actionable data in minutes. Then you can leverage the power of Velociraptor’s remediation and detection capabilities to ensure the compromise is cleaned up and never happens again!

This workshop is an introduction to hunting and incident response with Velociraptor for information security professionals. You will download and install Velociraptor, then deploy a new deployment and become familiar with the GUI. Experience the power of scaling a hunt across a large network (over 1,000 endpoints). We then continue to post process the data to quickly identify anomalies.

We cover some case studies in modern DFIR techniques exposing artifacts such as hunting memory for Cobalt Strike beacons, detecting lateral movement through forensic artifacts, and leveraging ETW to gain deeper visibility of endpoint activity.

This workshop will be hands on and include examples you should run on your own windows VM. All you need to participate is a Windows VM (e.g. a cloud instance or local VM).

Participants will learn:

  1. How to install Velociraptor locally
  2. The basics of the Velociraptor Query Language (VQL)
  3. How to apply community queries from the Artifact Exchange
  4. Hunting large number of machines for compromise in minutes
  5. Create offline collectors for responding to networks without installing the Velociraptor agent

This talk was given at the Annual Auscert conference as a long form (4h) workshop https://conference.auscert.org.au/program/

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