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automation

Not All IOC Scanning Is the Same

In the recent months I had several talks with friends and coworkers about IOC scanning and how to integrate IOCs from threat intel feeds into our scanners or other products that our customers already use. People often tell me that EDR or client management product X already does IOC scanning and that we don’t need […]

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How to Fall Victim to Advanced Persistent Threats

During the last four years, I was engaged on incident response teams for several large advanced persistent threat (APT) cases involving different German corporations. In this time, we have developed methods and tools to detect compromised systems, while also planning and performing remediation. During the course of these investigations, I noticed that certain circumstances supported […]

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Endpoint Attacker Detection

Synergetic Effects of Network and Host Based APT Detection

People often ask me if they still need our host based scanner THOR now that they have bought a network appliance that already checks all content that goes into and leaves their network. I normally answer that it is not a question of one solution versus another, but a combination of solutions to achieve the […]

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Detect System File Manipulations with SysInternals Sysmon

SysInternals Sysmon is a powerful tool especially when it comes to anomaly detection. I recently developed a method to detect system file manipulations, which I would like to share with you. We know how to track processes with the standard Windows audit policy option „Audit process tracking“, but Sysmon messages contain much more information to […]

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APT Detection is About Metadata

People often ask me, why we changed the name of our scanner from „IOC“ to „APT“ scanner and if we did that only for marketing reasons. But don’t worry, this blog post is just as little a sales pitch as it is an attempt to create a new product class. I’ll show you why APT […]

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Yara Anomaly Scanner

How to Scan for System File Manipulations with Yara (Part 2/2)

As a follow up on my first article about inverse matching yara rules I would like to add a tutorial on how to scan for system file manipulations using Yara and Powershell. The idea of inverse matching is that we do not scan for something malicious that we already know but for anomalies within the […]

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