I use a MISP instance to store malware samples that I came across during an investigation or incident. I also worked for example on an integration via a MISP module with the VMRay malware sandbox. The setup with MISP works very well but I needed an easier solution to make these samples available to other users (and tools), without the need of access to this MISP instance.
Enter Malware Repository MWDB, formerly known as … Read more.
I published an article on the IBM Security Intelligence blog : How Attackers Exploit the Remote Desktop Protocol.
This article covers the Remote Desktop Protocol (RDP) and how attackers attempt to exploit it. I provide a short introduction on what is RDP and who uses it and highlight some of its vulnerabilities, such as BlueKeep and DejaBlue. The article also includes a number of countermeasures that you can use to protect your RDP servers and … Read more.
The Unified Audit Log contains crucial elements when you want to investigate an incident in O365. You can do this live (with PowerShell, for example via Hawk). Sometimes however you receive the log file offline, with no live access to the environment.
I could not find a tool that gives me a quick overview of what was in the log. So I decided to write my own simple Python script to parse the exported O365 … Read more.
I published an article on the IBM Security Intelligence blog : When Is an Attack not an Attack? The Story of Red Team Versus Blue Team. This article is a high level overview of a red team vs blue team engagement. It starts with the reconnaissance of the victim, the red team scenario building, attack delivery and also how the blue team can discover the activities from the read team.
Read more at https://securityintelligence.com/articles/red-team-versus-blue-team-attack/.
The Pegasus spyware made by the Israel-based company NSO Group has been used in targeted surveillance attacks against activists, journalists and businesspeople. Its details, and methods to detect it, were revealed by CitizenLab (hacks from the Bahraini government on activists) with a forensic methodology report made available by Amnesty International.
Because both the tools and the indicators of compromise are made available it’s fairly easy to do these checks yourself.
Setup a Python virtual environment … Read more.
For a new assignment I wanted to use JARM to group servers with a similar configuration. Why JARM? Because it’s an easy way to quickly identify and group servers based on their configuration.
JARM is an active fingerprinting of TLS servers made available by Salesforce Engineering. It sends 10 TLS Client Hello packets to a server and captures specific attributes of the responses. These responses are then aggregated and hashed. A JARM fingerprint consists of … Read more.
Cobalt Strike (S0154) is a commercial penetration testing platform which is used by many red teams and, unfortunately, also by many criminal threat actors. In this post I summarise the findings from a SANS Digital Forensics and Incident Response keynote by Chad Tilbury : Cobalt Strike Threat Hunting. The YouTube video provides much more details but below you can find those findings that were relevant for me during an IR case.
This post includes references … Read more.
For a recent assignment, I had to summarise some of the legislation and cooperation frameworks that exist between CSIRTs and law enforcement agencies. This list is certainly not complete but already gives you an overview of what’s available. I first list the frameworks and then provide an overview of some of the existing cooperation mechanisms.
2001 – International
This convention, also known as the Budapest Convention is the first international treaty to address … Read more.
I published an article on the IBM Security Intelligence blog : Health Care Ransomware Strains Have Hospitals in the Crosshairs. This article covers ways on how hospitals and other facilities can against health care ransomware attacks. Two strains stand out in recent health care ransomware attacks: Ryuk and REvil. Although they are distinct when it comes to details, they also have some common elements.
Read more Health Care Ransomware Strains Have Hospitals in the Crosshairs
I published an article on the IBM Security Intelligence blog : Combating Sleeper Threats With MTTD. The article covers mean time to detect (MTTD) and mean time to response (MTTR).
I cover some of the options available to reduce the MTTD, what elements can be used to define baselines and how to improve security monitoring and maturity by improving the MTTD.
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