First researched by Microsoft Threat Intelligence Center (MSTIC) in collaboration with Citizen Lab, DevilsTongue is a piece of multifunctional malicious software written in C and C++ programming languages. MSTIC's findings suggest that DevilsTongue is associated with cyber criminals developing/se
After examining this email, we learned that it is sent by scammers who pretend to be Unicaja - a Spanish savings bank. The whole letter is written in the Spanish language. It contains a website link. Scammers behind this email attempt to trick recipients into opening that link and providing person
Luca (also known as RSStealer) is a piece of malicious software categorized as a stealer. Malware of this kind operates by extracting a wide range of vulnerable data from infected devices. The Luca stealer is written in the Rust programming language. This program's source code was leaked by its d
Our team discovered the StepWarrior application after downloading and testing a fake Adobe Flash Player installer (that installer was downloaded from an unofficial site). We found that the purpose of StepWarrior is to display intrusive advertisements. Thus, we concluded that StepWarrior operates
While examining malware samples submitted to the VirusTotal website, we discovered Nitro22 ransomware - malware that encrypts files to blackmail victims. Also, Nitro22 changes the desktop wallpaper and creates a ransom note (the "#Decryption#.txt" file), and appends the ".nitro" extension to filen
Our research team discovered the Vvwq ransomware-type program during a routine inspection of new submissions to VirusTotal. This malicious program belongs to the Djvu ransomware family. We executed a sample of Vvwq ransomware on our testing system, and it began encrypting files. The filenames of
CacheOptimization is an advertising-supported application that displays annoying advertisements. It has no useful features or provides other value. Our team discovered CacheOptimization after examining a fake installer downloaded from a shady page. Like most apps of this kind, CacheOptimization
Vveo is ransomware designed to encrypt files, append the ".vveo" extension to filenames, and drop the "_readme.txt" file (a ransom note). We found that Vveo is part of the Djvu ransomware family. Our team discovered this ransomware while analyzing malware samples submitted to the VirusTotal websit
Vvew is ransomware belonging to the Djvu family. Our team discovered it while checking VirusTotal for recently submitted malware samples. We found that Vvew appends the ".vvew" extension to filenames and creates the "_readme.txt" file containing contact and payment information. An example of how
While checking out dubious sites that promote software, our researchers found the Background Colors browser extension. It is presented as a tool capable of changing website background colors. However, after analyzing Background Colors, we learned that instead of working as advertised - this extens