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Lu0bot – An unknown NodeJS malware using UDP
Lu0bot – An unknown NodeJS malware using UDP

In February/March 2021, A curious lightweight payload has been observed from a well-known load seller platform. At the opposite of classic info-stealers being pushed at an industrial level, this one is widely different in the current landscape/trends. Feeling being in front of a grey box is somewhat a stressful problem, where you have no idea... » read more

Anatomy of a simple and popular packer
Anatomy of a simple and popular packer

It’s been a while that I haven’t release some stuff here and indeed, it’s mostly caused by how fucked up 2020 was. I would have been pleased if this global pandemic hasn’t wrecked me so much but i was served as well. Nowadays, with everything closed, corona haircut is new trend and finding a graphic... » read more

Let’s play (again) with Predator the thief
Let’s play (again) with Predator the thief

Whenever I reverse a sample, I am mostly interested in how it was developed, even if in the end the techniques employed are generally the same, I am always curious about what was the way to achieve a task, or just simply understand the code philosophy of a piece of code. It is a very... » read more

Haruko Malware Tracker – 1 Year Anniversary Update
Haruko Malware Tracker – 1 Year Anniversary Update

Hi folks, It’s been one year that the tracker (https://tracker.fumik0.com) is now active and over this past months, I understood that maintaining this solo project was definitely not an easy task. But, right now, Haruko is step by step a growing place that provides a start for OSINT stuff, learning Reverse malware analysis or helping... » read more

Overview of Proton Bot, another loader in the wild!
Overview of Proton Bot, another loader in the wild!

Loaders nowadays are part of the malware landscape and it is common to see on sandbox logs results with “loader” tagged on. Specialized loader malware like Smoke or Hancitor/Chanitor are facing more and more with new alternatives like Godzilla loader, stealers, miners and plenty other kinds of malware with this developed feature as an option.... » read more