I improve security for enterprises around the world working for TrustedSec & I am @PyroTek3 on Twitter. Read the About page (top left) for information about me. :) https://adsecurity.org/?page_id=8
Sean Metcalf
Author's posts
May 01 2017
BSides Charm (2017) Talk Slides Posted – Detecting the Elusive: Active Directory Threat Hunting
I recently presented my talk “Detecting the Elusive: Active Directory Threat Hunting” at BSides Charm in Baltimore, MD. Slides are now posted in the Presentations section. I cover some of the information I’ve posted here before: PowerShell Security Detecting Kerberoasting: Part 1 and Part 2 On Sunday, April 30th, 2017, I spoke at BSides Charm in …
May 01 2017
Sp4rkCon (2017) Talk Slides Posted – Active Directory Security: The Good, the Bad, & the UGLY
I recently presented my talk “Active Directory Security: The Good, the Bad, & the UGLY” at Sp4rkCon in Bentonville, AR in April 2017. Slides are now posted in the Presentations section. I cover some of the information I’ve posted here before: PowerShell Security Detecting Kerberoasting: Part 1 and Part 2 Here’s the talk description: Active Directory Security:The Good, the …
Feb 08 2017
Detecting Kerberoasting Activity Part 2 – Creating a Kerberoast Service Account Honeypot
In my previous post, “Detecting Kerberoasting Activity” I explain how Kerberoasting works and describe how to detect potential Kerberoasting activity. The trick to this is understanding what activity is normal in order to filter out the noise and increase the fidelity of the alert. This post describes how to filter from millions of events to …
Feb 05 2017
Detecting Kerberoasting Activity
Introduction Kerberoasting can be an effective method for extracting service account credentials from Active Directory as a regular user without sending any packets to the target system. This attack is effective since people tend to create poor passwords. The reason why this attack is successful is that most service account passwords are the same length …
Jan 29 2017
Sneaky Persistence Active Directory Trick #18: Dropping SPNs on Admin Accounts for Later Kerberoasting
The content in this post describes a method through which an attacker could persist administrative access to Active Directory after having Domain Admin level rights for about 5 minutes. Complete list of Sneaky Active Directory Persistence Tricks posts This post explores how an attacker could leverage existing admin rights and/or over-permissive delegation to gain persistence …
Nov 03 2016
Securing Domain Controllers to Improve Active Directory Security
Active Directory security effectively begins with ensuring Domain Controllers (DCs) are configured securely. At BlackHat USA this past Summer, I spoke about AD for the security professional and provided tips on how to best secure Active Directory. This post focuses on Domain Controller security with some cross-over into Active Directory security. The blog is called …
Oct 21 2016
Securing Windows Workstations: Developing a Secure Baseline
Securing workstations against modern threats is challenging. It seems like every week there’s some new method attackers are using to compromise a system and user credentials. Post updated on March 8th, 2018 with recommended event IDs to audit. The best way to create a secure Windows workstation is to download the Microsoft Security Compliance Manager …
Oct 18 2016
BSides DC (2016) Talk – PowerShell Security: Defending the Enterprise from the Latest Attack Platform
This Saturday at BSides DC, I am presenting on the current state of PowerShell security in a talk called, “PowerShell Security: Defending the Enterprise from the Latest Attack Platform.” I cover some of the information I’ve posted here before: PowerShell Version 5 Security Enhancements PowerShell Security: PowerShell Attack Tools, Mitigation, & Detection Detecting Offensive PowerShell …
Sep 27 2016
Some Favorite DerbyCon 6 Talks (2016)
This post is a collection of my favorite and interesting talks from DerbyCon 6 (2016). There were a lot of great talks and as I discover them, I’ll add them here. My goal is to collect and provide the talk videos and slides together for a single, easy reference. I’m sure I missed a few. …
Sep 13 2016
DerbyCon 6 (2016) Talk – Attacking EvilCorp: Anatomy of a Corporate Hack
Next week at DerbyCon 6, Will Schroeder (aka Will Harmjoy, @Harmj0y) & I are presenting on enterprise security, “Attacking EvilCorp: Anatomy of a Corporate Hack.” We call this one the “How You Got Hacked” presentation. The company and events are fictional. The techniques are real. On Saturday, September 24th, 2016, Will & I are speaking …
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