Kiwm is a type of malware that is part of the Djvu ransomware family. We came across Kiwm during our analysis of malware samples submitted to VirusTotal. It works by encrypting files, adding the ".kiwm" extension to their names, and leaving a ransom note (the "_readme.txt" text file). An example
Kifr belongs to the Djvu family of ransomware and follows the pattern of encrypting files and appending the ".kifr" extension to their names. The ransomware also creates a "_readme.txt" file with instructions on how to pay the ransom. Our researchers discovered Kifr while analyzing malware samples
During our investigation of SkipAds for Youtube, we discovered that it presents intrusive advertisements, which led us to classify this browser extension as adware. Ironically, its name suggests that it blocks ads. It is important to note that users often unintentionally download and install adwar
Proton is ransomware that our team discovered on VirusTotal while checking the page for recently submitted malware samples. We found that Proton encrypts files, appends the kigatsu@tutanota.com email address, victim's ID, and, depending on the variant, ".Proton" or ".kigatsu" extension to filename
Rorschach (also known as BabLock) is ransomware that encrypts files. The attackers aim at small and medium-sized businesses as well as industrial companies. Along with encrypting data, Rorschach also adds a random string of characters and a two-digit number (ranging from 00 to 98) to the end of fi
While examining the Sports Engine browser extension, we found that it hijacks a web browser by changing its settings. The purpose of this browser-hijacking app is to promote a fake search engine (sportengine.info). Additionally, Sports Engine can read certain data. Once added, the Sports E
Upon scrutinizing this email, we have ascertained that it is a fraudulent extortion letter. This phishing campaign comprises of at least two versions of the letter, with the perpetrators employing the names of well-known cybercriminals to intimidate and lend credibility to their threats. T
After reviewing this email, we determined that it is a phishing letter masquerading as a notification from an email service regarding mail delivery status. There are at least two variants of this letter in the phishing campaign. Scammers use both of them to lure unsuspecting recipients into provid
Self-extracting (SFX) archive files have traditionally been used to share compressed data with individuals who do not have the software to unpack and view the contents of a standard archive file. Nevertheless, these files can harbor covert malicious functionality that is not readily apparent to us
Predator is the name of spyware (malicious software) targeting Android users. Between August and October 2021, the attackers utilized zero-day exploits that targeted Chrome and the Android OS to install Predator spyware implants on Android devices, even those that were fully up-to-date. It