Remote desktop protocol (RDP) is designed by Microsoft for remote management of Windows-based virtual desktops. It provides users a graphical interface to connect over the network to a remote computer. Having a remote access feature leaves the door open for attackers.
I’ll use this post to summarise some of the information and commands that I use when investigating an RDP incident.
Note that RDP connections are usually done via tcp/3389.
Investigating RDP goes best in … Read more.
I published an article on IBM Security Intelligence on What Are the Different Types of Cyberthreat Intelligence?.
The article covers analysing the The Different Types of Threat Intelligence and the prerequisites to Start With a Cyberthreat Intelligence Program.
Cisco Talos published an analysis on the new VPNFilter malware that targets at least 500K networking devices worldwide. The post describes how the stage 1 of the malware extracts IP coordinates from the GPS latitude and longitude fields in the EXIF information of images.
A post by Kaspersky further analysed the VPNFilter EXIF to C2 mechanism. Unfortunately all the photobucket.com galleries that were used by the malware as storage for the images have been deleted. … Read more.
I use an Apple MacBook as my primary work laptop. One of the nice features that are automatically included in OSX is Time Machine, allowing you to do automatic backups.
You can do the backups to an external disk (via USB) or to a network connected disk. I also have a Synology NAS with a volume (encrypted of course) configured for the backups. I have set a quota for this volume to prevent the backups … Read more.
I published an article on IBM Security Intelligence on Analyzing PDF and Office Documents Delivered Via Malspam .
The article covers analysing the static properties of malspam and further in depth analysis of malspam via for example the tools from Didier Stevens.
I published an article on IBM Security Intelligence on How to Choose the Right Malware Classification Scheme to Improve Incident Response.
The article covers malware classification in an ideal world, some of the existing classification schemes and how machine-parsable malware classification can help make incident response processes more fluent.
Twitter is a great source for conducting open source intelligence. One of my favorite tools is Tweetsniff from Xavier Mertens. It will grab a Twitter user timeline for further processing, for example in Elasticsearch.
Another tool that I recently discovered is Tinfoleak. Tinfoleak is build for Twitter intelligence analysis and provides you with an HTML file output.
I wanted to use Tinfoleak to build profiles of users to tune targeted phishing campaigns (spear phishing) for … Read more.
I published an article on IBM Security Intelligence on Reducing Dwell Time With Automated Incident Response. The article covers collecting event information, sharing intelligence data and then moving towards automated incident response together with automated digital forensic acquisition (with MIG & GRR).
The incident response orchestration process covers TheHive, MISP, LogicHub and VMRay to extend further on automation.
The Drupal team released a security advisory for all Drupal sites recommending all these sites to upgrade to the latest Drupal version.
The discovered vulnerability could lead to remote code execution in Drupal 7.x and 8.x.
I have a mindmap on this vulnerability
Further information from Drupal can be found at
Drupal core – Highly critical – Remote Code Execution – SA-CORE-2018-002 The FAQ on SA-CORE-2018-002
According to bojanz this vulnerability … Read more.
Another day, another phish. This day it concerns a phishing e-mail for a Belgian bank. The phishing e-mail looked like this The link is only viewable if you enable HTML content in the e-mail client.
The link points to the URL shortening service Bitly and then follows a couple of redirects (including another URL shortening service).
bitly.com, via HTTPS, received 301 Moved Permanently; go2l.ink, via HTTP, received 302 FOUND; A PHP page … Read more.