For those that often enjoy reverse engineering shellcode, or obfuscated malware in general, you may have come across an interesting “malware” family named GuLoader – malware in quotations as it has in the past been linked to a company selling a software packer named CloudEyE (see: Checkpoint Research), though it does appear most of it’s […]
YARA is an important tool for any aspiring threat intel analyst or reverse engineer, whether for detecting code reuse among different families, identifying samples utilising a certain technique, or even tracking the development of recently discovered malware. While using simple string patterns for rules can be an efficient method for quickly building detections, it is […]
Qakbot is one of the most notorious malware families currently operating, and dates back to around 2007. It is primarily focused around stealing banking information and user credentials, however with the huge jump in ransomware popularity among threat actors, Qakbot has been seen to drop Egregor and the ProLock ransomware. As it is primarily operated […]
It’s sure been a while since the last post! We’ve gone through several iterations of website design over the past few months (plus fixing all the malformed images due to the theme transfer), but should be back for good now! For this commemorative post, we’ll be diving into a recently discovered malware sample known as […]
So recently I’ve been reverse engineering the newest version of IcedID (the version hiding encrypted payloads and other data inside PNGs), and I came across a post by Malware-Traffic-Analysis about IcedID being downloaded by malspam typically responsible for downloading ISFB. This particular infection chain was interesting, as the Word Document drops a script file to […]
This post is a continuation from my last one, where we reverse engineered the second stage of the shellcode, and replicated the API hashing routine. If you haven’t checked out that post, you can check it out here, and the one before that here! In this post we’re going to be writing an emulator for […]