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"There are many ways to fight cyber-crime, but what we used to do in Yoroi is Malware analysis and Incident response by using special and proprietary technologies. Often analyses are enough to temporary block cyber-criminals by sharing to everybody IOC allowing National and International players (ISP, AV vendors, CERTs and so on) to block connections […]
Read more "Free Tool: LooCipher Decryptor"During the past few weeks I received several emails asking how to dissect Office Payloads. While I was thinking on how to answer to such a questions I received a MalSpam with a Microsoft Office document attached by sheer coincidence, so I decided to write little bit on it. This is not going to be […]
Read more "Step By Step Office Dropper Dissection"When an unknown sender suggests me to click on a super wired url, dropping a ZIP file straight in my box, by saying it’s getting the next targeted attack on a huge company, well I kinda looking forward to it ! So I clicked on the link (see IOC section) and I’ve downloaded a “pik.zip” […]
Read more "Ransomware, Trojan and Miner together against “PIK-Group”"A .CSV file could be a malware carrier and if interpreted by Microsoft Excel it could become a malware executor ! When I personally saw this technique back in 2017 (please take a look to here, here and here ) I was fascinated. A simple and sweet textual file forcing the behaviour of powerful and […]
Read more "Spreading CSV Malware over Google Sheets"On January 19th we downloaded Collectoin #1 to make statistics on its content (you might find more information here). During these days we finished the two main activities to be able to answer some more questions about it data: (i) ELK import and (ii) building of simple views to visualise desired informations. The following image shows […]
Read more "“Collection #I” Data Breach Analysis – Part 2"Few weeks ago I wrote about “How Data Breaches Happen“, where I shared some public available “pasties” within apparently (not tested) SQLi vulnerable websites. One of the most famous data breach in the past few years is happening in these days. I am not saying that the two events are linked, but I have fun […]
Read more "“Collection #I” Data Breach Analysis – Part 1"Data breaches happen. Today, as never before, data plays a fundamental role in our real life. Everybody is both: dataproducer and dataconsumer. We are data producer by simply moving from one building to another one, having a smartphone in our pocket or surfing the web or just by tapping on smartphone applications. We are data consumer […]
Read more "How to data breaches happen"Nowadays Microsoft office documents are often used to propagate Malware acting like dynamic droppers. Microsoft Excel within macros or Microsoft Word with user actions (like links or external OLE objects) are the main player in this “Office Dropping Arena”. When I figured out that a Microsoft Powerpoint was used to drop and to execute a […]
Read more "Microsoft Powerpoint as Malware Dropper"Today I’d like to share an interesting analysis of a Targeted Attack found and dissected by Yoroi (technical details are available here). The victim was one of the most important leader in the field of security and defensive military grade Naval ecosystem in Italy. Everything started from a well crafted email targeting the right office […]
Read more "MartyMcFly Malware: Targeting Naval Industry"