I am a Senior Security Researcher/Team Lead at Fortinet. I am a Lead Trainer responsible for training the junior AV/IPS analysts in malware analysis and reverse engineering.
I have presented in different conferences like BSidesVancouver, BSidesCapeBreton, OAS-First, BSidesOttawa, SecTor, DefCamp, BCAware, AtlSecCon, BSidesCalgary, TakeDownCon, MISABC, InsomniHack, ShowMeCon, CircleCityCon, and HackInParis.
I am a regular contributor to the Fortinet blog and to the Virus Bulletin publication, where I have published 22 articles.
Hijacking the Boot Process – Ransomware Style
Have you ever wondered how a boot process works? How a computer detects which operating system it needs to load? Or what is the impact if that single sector in your harddisk is compromised?
In this presentation, we are going to look into how Petya, a ransomware, can overwrite an MBR (Master Boot Record), both in MBR- and GPT-style disk, with its malicious code. Then, we are going to follow the code in the MBR and show how a simple malicious kernel code can take control of the boot process until you pay the ransom. I will show a demo on how to debug the MBR to see how the actual native code executes without any API.
We are also going to see how we can use a combination of different tools to figure out how a ransomware can infect the very first sector of a harddisk. Tools, such as, Disk Management, DISKPART, WinObj, Process Monitor, and HDHacker. And of course, x64dbg and ollydbg for debugging the ransomware in application-level. And finally, we are going to see how to use Bochs debugger to analyze the malware while it runs its own kernel code.
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Orange Romania is the leader of the local telecom market and part of the Orange Group, one of the largest global telecommunications operators, connecting hundreds of millions of customers worldwide. With over 11 million customers and an annual turnover exceeding 1.5 billion euros, Orange Romania connects 1 in 2 Romanians and offers an extensive range of communication solutions to its customers, both individual users and companies, from basic services up to complete voice services, fixed and mobile data, TV services or smart home services, but also mobile financial services. Orange is also a leader in innovation investing yearly over 200 million euros in network infrastructure and R&D initiatives in Romania. In the past 3 years Orange has launched two 5G Labs in Bucharest and Iasi, that aim to support researchers, startups and companies to test their 5G solutions in advance. In addition, Orange is a long-term supporter of the startup ecosystem through the Orange Fab accelerator program designed to support entrepreneurs in the development of innovative products and their distribution locally and internationally.
Orange Services was created in 2013 and is a 100% owned subsidiary of Orange Group. As a technology services company, our DNA is in IT, but our teams also work in other domains including mobile networks and a number of commercial and business functions. Orange Services is one of the largest technology hubs in the Orange Group, working internationally for both Orange corporate functions and country operations. Through a unique combination of cutting edge know-how and expertise, our teams provide a broad range of services: development and supervision of IT services in domains such as Big Data, Cloud, M2M, IoT, TV, Connected Objects; design and development of IT infrastructure and desktop solutions; testing & planning for mobile networks; implementation of supply chain solutions and also improvement of commercial & business performance including BI, CRM, Analytics, Digital learning and Customer Care. Visit us on LinkedIn.