Microsoft Defender ATP Advanced Hunting – Who’s logging on with local admin rights?

Note: I have updated the kql queries below, but the screenshots itself still refer to the previous (old) schema names If you’re among those administrators that use Microsoft Defender Advanced Threat Protection, here’s a handy tip how to find out who’s logging on with local administrators’ rights. But first when would you want to run this? Well here are some scenarios I can think of: You want to find users that have local administrator rights Read More …

Windows Defender, More than just Antivirus – Part 1

Due to my professional activity as a Cyber Security Consultant, I regularly speak with customers about Windows Defender and find that many are not fully aware of all the features and capabilities that Windows Defender offers. Also, when reviewing existing implementations, I’ve noticed a pattern of some common issues. I guess the blog post title ‘Windows Defender, more than just Antivirus’ says it all. The objective of today’s blog post is to provide you with Read More …

How to accelerate your Microsoft Defender ATP Evaluation

As with almost any solution, one of the time consuming activities is to get the prerequisites in place until you get things up and running, this is no different with Microsoft Defender Advanced Threat Protection. Although the solution itself is entirely hosted in the cloud, there are a few prerequisites on the client side that must be put in place before you can get your hands on MDATP. Getting these prerequisites in place is no Read More …

Testing Windows Defender MAPS Connectivity with PowerShell

Whenever I work with customers on Windows Defender or Microsoft Defender Advanced Threat Protection, one of the first things I usually review are the current Windows Defender settings. Having Windows Defender properly configured is key, because otherwise you might not be able to make use of all the capabilities Defender and Defender ATP provides. One of them is MAPS (Microsoft Active Protection Service) or also known as Windows Defender Antivirus cloud-delivered protection service. Quite often Read More …

Microsoft Defender ATP – Live Response

Back in May the Microsoft Defender Advanced Threat Protection team announced the availability of the Live response feature in MDATP. Today I took a closer look at this and thought I’d share my experiences and findings. What’s that live response thing again? “Live response is a capability that gives you instantaneous access to a machine using a remote shell connection. This gives you the power to do in-depth investigative work and take immediate response actions Read More …

Managing Role Based Access (RBAC) for Microsoft Defender Advanced Threat Protection

I spend quite some time during the week travelling to and from customers, to make the best use of travel time, I usually read blogs and tweets or take online trainings to keep myself up to date about whatever interests me. Yesterday I noticed a tweet from someone regarding MDATP Portal access “Security Administrator can’t be assigned to staff in my org. It’s too powerful.” Maybe not everyone is aware of the RBAC capabilities in Read More …

Retrieving Windows Defender Exploit Guard Windows Event logs with PowerShell

Most of the features included in Windows Defender Exploit Guard can be enabled in audit or block mode. The impact can then be analyzed either by looking at the corresponding Windows Event log entries or through advanced hunting queries in Windows Defender ATP. Today, I’ll share a script I recently wrote to quickly pull Windows Defender Exploit Guard related events from the Windows Event log. Anytime soon I will share some Kusto queries for the Read More …

How to Configure Splunk to pull Windows Defender ATP alerts

Windows Defender ATP provides SIEM integration, allowing you to pull alerts from Windows Defender ATP Security Center into Splunk. The SIEM integration uses the Windows Defender ATP Alerts Rest API. Since I have an actual customer demand for such an integration, I thought it’s about time to get a feel for how this works. Prerequisites An active Windows Defender ATP subscription with portal admin access Windows Defender ATP SIEM integration enabled within the portal. A Read More …

How to customize Windows Defender ATP Alert Email Notifications

During a recent customer engagement, I was asked whether the it would be possible to add additional information to the Alert email that is send out by Windows Defender ATP when a new alert occurs. @RagoReady from Microsoft gave me a good hint to look into Microsoft Flow and the Windows Defender ATP connector. When you enable Alert Notifications within the Windows Defender ATP portal, subscribed users get an alert email that looks as shown Read More …

Check Windows Defender ATP Client Status with PowerShell

Here’s a little utility to check the status of Windows Defender ATP on a local or remote client. I basically took some code from the WDATP connectivity verification tool, removed the network connectivity testing part (I might add that later as well) and transformed the code so it can be used to check whether the client is properly onboarded and if all required services are running.