Blogs

Microsoft Defender for Identity Encrypted Password

After installing a Microsoft Defender for Identity sensor, the SensorConfiguration.json contains information about the sensor, including an encrypted password when using an authenticated proxy server. I wanted to see if I could decrypt the password and if I could set a proxy without the need to reinstall the Microsoft Defender for Identity sensor. I found […]

Microsoft Defender for Identity Recent Bypasses Comments

Recently I have seen some videos and read some blog posts about bypassing Microsoft Defender for Identity. I agree that there are possibilities to bypass Microsoft Defender for Identity, but in this blog post, I would like to add some notes about these bypasses. Comments Conclusion Like every security product, there are bypasses for Microsoft […]

Microsoft Defender for Identity Auditing

Microsoft Defender for Identity monitors your domain controllers by capturing and parsing network traffic and leveraging Windows events directly from your domain controllers. Auditing needs to be enabled for the Windows events to appear in the event viewer. Unfortunately, auditing is not on by default. Microsoft created a great docs page on configuring Windows event […]

Microsoft Workload Identities Leaked Credentials

Microsoft announced four new detections in Azure Active Directory Identity Protection last month. One of the four detections is “Workload Identities Leaked Credentials.” During a Microsoft webinar where I demonstrated this new feature in Microsoft Identity Protection, multiple people requested the tool I created, so I decided to release it. This blog post will briefly […]

Microsoft Defender for Office 365 Safe Links Bypass

In my previous blog post, I mentioned you need a URL shortener instead of the Azure Function URL to send to a mailbox to identify Microsoft Defender for Office 365 Safe Links. The reason to use a shortener is that using the direct Function App URL bypasses Microsoft Defender for Office 365 Safe Links active […]

Microsoft Defender for Office 365 Identification

A few months ago, I wrote a script that checks if a company uses Microsoft Defender for Identity. I then wondered if there is a way to identify if a company uses Microsoft Defender for Office 365. Safe Links, a Microsoft Defender for Office 365 feature, actively scans incoming URLs. So checking if Microsoft Defender […]

Microsoft Azure Subscription Hijacking

Suppose you have a pay-as-you-go subscription in Azure. In that case, you might need to review who owns the Global Administrator role or who has owner permissions on that subscription in your tenant as a malicious user or attacker can hijack the subscription and make high costs at your expense. Since all activity logs are […]

Microsoft Windows Antimalware Scan Interface Bypasses

Antimalware Scan Interface, or AMSI in short, is an interface standard for Windows components like User Account Control, PowerShell, Windows Script Host, Macro’s, Javascript, and VBScript to scan for malicious content. AMSI sits in the middle of an application and an AMSI provider, like Microsoft Defender, to identify malicious content. In this blog post, I […]

Microsoft Windows Print Spooler Elevation of Privilege vulnerability (CVE-2021-1675) explained

I guess most of you heard about the Windows Print Spooler Elevation of Privilege vulnerability (CVE-2021-1675) in the last couple of weeks. It is a vulnerability that gives an attacker high privileges when they own a regular user account on all print spooler service-enabled devices. Unfortunately, it runs on all Windows Operating Systems by default. […]

Microsoft JSON Web Token Extractor

When connecting to Azure using, for example, the PowerShell Az module, a JSON Web Token is created and sometimes stored in plain text on disk and memory. I will show where to find the JSON Web Tokens on disk in this blog post, including a tool I wrote to get JSON Web Tokens from memory […]

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