Detection is a key point in threat hunting. During the past few weeks, stright in the middle of the winter “holidays” (well, maybe if you live in a place where no COVID-19 lockdown was involved), many people re/started a studying program on cybersecurity. Some of them wrote to me asking if there is a way […]Read more "C2 Traffic Patterns: Personal Notes"
Nowadays malware authors use a lot of techniques to hide malicious payloads in order to bypass security products and to make malware analyst life harder and fun. There are many tools that you can use to extract content from malware and there is not a standard process, you can use different tools, different techniques and […]Read more "How To Unpack Malware: Personal Notes"
According to the Yoroi annual cyber security report (available HERE), to Cyber Threat Trends (available HERE) and to many additional resources, Microsoft Office files (Word documents and Excel spreadsheet) are one of the most used malware loaders in the current era. Attackers lure victims, by seducing them to open a specially crafted Office document, which […]Read more "How to Reverse Office Droppers: Personal Notes"
This is the fifth week my company (Yoroi) and I are working from home (covid-19). While every company process is running smooth and fast, personal quarantine is getting quite long and heavy especially if you are accustom to travel a lot for working purposes. Under these circumstances home office setup becomes very important as you […]Read more "Working From Home: Building Your Own Setup"
Nowadays Iran’s Cybersecurity capabilities are under microscope, many news sites, gov. agencies and security experts warn about a possible cybersecurity infiltration from Iranian government and alert to increase cybersecurity defensive levels. Today I want to share a quick and short study based on cross correlation between MITRE ATT&CK and Malpedia about some of the main […]Read more "Iranian Threat Actors: Preliminary Analysis"
Nowadays one of the most frequent cybersecurity threat comes from Malicious (office) document shipped over eMail or Instant Messaging. Some analyzed threats examples include: Step By Step Office Dropper Dissection, Spreading CVS Malware over Google, Microsoft Powerpoint as Malware Dropper, MalHIDE, Info Stealing: a New Operation in the Wild, Advanced All in Memory CryptoWorm, etc. […]Read more "Frequent VBA Macros used in Office Malware"
From time to time we might observe special Malware storing themselves into a MBR and run during the booting process. Attackers could use this neat technique to infect and to mess-up your disk and eventually asking for a ransom before restoring original disk-configurations (Petya was just one of the most infamous boot-ransomware). But this is […]Read more "Writing Your First Bootloader for Better Analyses"
Today I’d like to share a simple and personal thought about teaching models on cybersecurity. Quite often students ask me how to improve their technical skills and the most common question is: “would it be better an university course a professional certification or getting directly on the field working in a Cybersecurity company ?”. The […]Read more "University, Professional Certification or Direct Experience ?"
I started my Blog back in October 2007 (yep, 12 years ago !) with the simple intent of describing some of my experiences in Cyber Security. At that time it was not so common like today to write about vulnerabilities, “hacking tools” and “information security researches”, but since it was what I was studying during […]Read more "TOP 100 Cyber Security Blog"
Scraping the “TOR hidden world” is a quite complex topic. First of all you need an exceptional computational power (RAM mostly) for letting multiple runners grab web-pages, extracting new links and re-run the scraping-code against the just extracted links. Plus a queue manager system to manage scrapers conflicts and a database to store scraped data […]Read more "Scraping the TOR for rare contents"