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Our employees frequently engage in research projects to live up to the high standard. They analyze the latest topics, methods and tools in interesting information security areas and prepare them in this context. The results of these activities contribute, for example, to projects, lectures at conferences, market overviews and articles for technical journals as well in advisories and zero-day-vulnerabilities.

Blog article

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Command-and-Control

Beacon Object Files for Mythic – Part 3

December 4, 2025 – This is the third post in a series of blog posts on how we implemented support for Beacon Object Files (BOFs) into our own command and control (C2) beacon using the Mythic framework. In this final post, we will provide insights into the development of our BOF loader as implemented in our Mythic beacon. We will demonstrate how we used the experimental Mythic Forge to circumvent the dependency on Aggressor Script – a challenge that other C2 frameworks were unable to resolve this easily.

Author: Leon Schmidt

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Command-and-Control

Beacon Object Files for Mythic – Part 2

November 27, 2025 – This is the second post in a series of blog posts on how we implemented support for Beacon Object Files (BOFs) into our own command and control (C2) beacon using the Mythic framework. In this second post, we will present some concrete BOF implementations to show how they are used in the wild and how powerful they can be.

Author: Leon Schmidt

Learn more »
Forensic

A collection of Shai-Hulud 2.0 IoCs

November 26, 2025 – Regarding the Node Package Manager (npm) supply chain attack that started November 21, 2025, and affected thousands of packages, we have collected and identified corresponding hashes to make them publicly available in one single place for easier access.

Author: Niklas Vömel, Felix Friedberger

Learn more »
Command-and-Control

Beacon Object Files for Mythic – Part 1

November 19, 2025 – This is the first post in a series of blog posts on how we implemented support for Beacon Object Files into our own command and control (C2) beacon using the Mythic framework. In this first post, we will take a look at what Beacon Object Files are, how they work and why they are valuable to us.

Author: Leon Schmidt

Learn more »
Forensic

IOCs of the npm crypto stealer supply chain incident

September 25, 2025 – Regarding the Node Package Manager (npm) supply chain attack that started September 8, 2025, and affected 27 packages, we have collected and identified corresponding hashes to make them publicly available in one single place for easier access.

Author: Niklas Vömel

Learn more »
Command-and-Control

Beacon Object Files for Mythic – Part 3

December 4, 2025 – This is the third post in a series of blog posts on how we implemented support for Beacon Object Files (BOFs) into our own command and control (C2) beacon using the Mythic framework. In this final post, we will provide insights into the development of our BOF loader as implemented in our Mythic beacon. We will demonstrate how we used the experimental Mythic Forge to circumvent the dependency on Aggressor Script – a challenge that other C2 frameworks were unable to resolve this easily.

Author: Leon Schmidt

Read more »
Command-and-Control

Beacon Object Files for Mythic – Part 2

November 27, 2025 – This is the second post in a series of blog posts on how we implemented support for Beacon Object Files (BOFs) into our own command and control (C2) beacon using the Mythic framework. In this second post, we will present some concrete BOF implementations to show how they are used in the wild and how powerful they can be.

Author: Leon Schmidt

Read more »
Forensic

A collection of Shai-Hulud 2.0 IoCs

November 26, 2025 – Regarding the Node Package Manager (npm) supply chain attack that started November 21, 2025, and affected thousands of packages, we have collected and identified corresponding hashes to make them publicly available in one single place for easier access.

Author: Niklas Vömel, Felix Friedberger

Read more »
Command-and-Control

Beacon Object Files for Mythic – Part 1

November 19, 2025 – This is the first post in a series of blog posts on how we implemented support for Beacon Object Files into our own command and control (C2) beacon using the Mythic framework. In this first post, we will take a look at what Beacon Object Files are, how they work and why they are valuable to us.

Author: Leon Schmidt

Read more »
Forensic

IOCs of the npm crypto stealer supply chain incident

September 25, 2025 – Regarding the Node Package Manager (npm) supply chain attack that started September 8, 2025, and affected 27 packages, we have collected and identified corresponding hashes to make them publicly available in one single place for easier access.

Author: Niklas Vömel

Read more »
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Research
Command-and-Control

Beacon Object Files for Mythic – Part 3

December 4, 2025 – This is the third post in a series of blog posts on how we implemented support for Beacon Object Files (BOFs) into our own command and control (C2) beacon using the Mythic framework. In this final post, we will provide insights into the development of our BOF loader as implemented in our Mythic beacon. We will demonstrate how we used the experimental Mythic Forge to circumvent the dependency on Aggressor Script – a challenge that other C2 frameworks were unable to resolve this easily.

Author: Leon Schmidt

Read more »
Command-and-Control

Beacon Object Files for Mythic – Part 2

November 27, 2025 – This is the second post in a series of blog posts on how we implemented support for Beacon Object Files (BOFs) into our own command and control (C2) beacon using the Mythic framework. In this second post, we will present some concrete BOF implementations to show how they are used in the wild and how powerful they can be.

Author: Leon Schmidt

Read more »
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Advisories

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Vulnerabilities

cirosec follows this responsible disclosure policy when dealing with zero-day vulnerabilities found during research or customer projects. The goal is to balance the need of giving the vendor or open-source project enough time to develop and distribute a fix for the vulnerability with the need of the public to know about the security vulnerability. The policy is in accordance with industry-standard responsible disclosure practices. Our Responsible Disclosure Policy could be found here.

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