Uncovering a ransomware distribution operation – Part 2

In Part 1 we’ve analyzed a vast Crypt0L0cker ransomware distribution operation currently affecting continental Europe and ready to jump to new countries. In this second post we’ll analyze in detail the server side code used to dispatch the victims towards the correct websites, up to the ransomware itself. We’ll also analyze the ransomware behaviour and how […]

Nemucod meets 7-Zip to launch ransomware attacks

Nemucod is a Javascript downloader used to perform all kind of nasty stuff, recently a “ransomware” routine has been found in some samples, even if a simple one: a XOR with a predefined 255 bytes key. In other instances we have observed the download of a malicious executable responsible for the encryption process. What we will analyze this […]

Uncovering a ransomware distribution operation – Part 1

Recently we uncovered a ransomware distribution operation targeting European users and carried out via phishing scams. In this post we will show how we have conducted the research: from the initial infection stage back to the person that is orchestrating the whole operation. These campaigns are targeting Italy, Denmark and Spain, although we have detected two new campaigns about to be started […]