We recently talked about recent improvements to the CTB-Locker ransomware. To recap, the malware now offers a “free decryption” service, extended deadline to decrypt the files, and an option to change the language of the ransom message. We are seeing another wave of CTB-Locker ransomware making their way into the wild. What’s highly notable about…Read More
Last July we came across a crypto-ransomware variant known as Critroni or Curve-Tor-Bitcoin (CTB) Locker. We observed recent improvements to the CTB malware, which now offer a “free decryption” service, extended deadline to decrypt the files, and an option to change the language of the ransom message. These new variants also demand payment of 3 BTC…Read More
For $50, one could purportedly get a lifetime license to upgradeable variants of WannaCry. We saw this advertisement in an Arabic-speaking underground forum on May 14, two days after WannaCry’s outbreak. Indeed, a threat that left a trail of significant damage in its wake was objectified into a commodity, and even a starting point for others to launch their own cybercriminal businesses.
WannaCry’s relatively low price also reflects another unique aspect of the Middle Eastern and North African underground: a sense of brotherhood. Unlike marketplaces in Russia and North America, for instance, where its players aim to make a profit, the Middle East and North Africa’s underground scene is an ironic juncture where culture, ideology, and cybercrime meet.Read More
Apart from understanding the ransomware tactics and techniques beyond encryption, it is equally important to understand how they arrive in the environment. Our recent analysis reveals that majority of ransomware families can be stopped at the exposure layer—web and email. In fact, Trend Micro has blocked more than 66 million ransomware-related spam, malicious URLs, and threats from January to May 2016.Read More
Good customer service is part of running a successful business. It shouldn’t be a surprise that even crypto-ransomware purveyors are now thinking of ways to make the process of paying for crypto-ransomware easier. The innovation brought forth by some new JIGSAW variants? Instead of using dark web sites, it communicates to the user via… live chat.Read More