In September 2016, we noticed that operators of the updated CRYSIS ransomware family (detected as RANSOM_CRYSIS) were targeting Australia and New Zealand businesses via remote desktop (RDP) brute force attacks. Since then, brute force RDP attacks are still ongoing, with both SMEs and large enterprises across the globe affected. In fact, the volume of these attacks doubled in January 2017 from a comparable period in late 2016. While a wide variety of sectors have been affected, the most consistent target has been the healthcare sector in the United States.Read More
Fileless infections are exactly what their namesake says: they’re infections that don’t involve malicious files being downloaded or written to the system’s disk. While fileless infections are not necessarily new or rare, it presents a serious threat to enterprises and end users given its capability to gain privileges and persist in the system of interest to an attacker—all while staying under the radar. For instance, fileless infections have been incorporated in a targeted bot delivery, leveraged to deliver ransomware, infect point-of-sale (PoS) systems, and perpetrate click fraud. The key point of the fileless infection for the attacker is to be able to evaluate each compromised system and make a decision whether the infection process should continue or vanish without a trace.
The cybercriminal group Lurk was one of the first to effectively employ fileless infection techniques in large-scale attacks—techniques that arguably became staples for other malefactors.Read More
In the past weeks, information-stealing malware EyePyramid made headlines after it was used to steal 87GB of sensitive data from government offices, private companies and public organizations. More than 100 email domains and 18,000 email accounts were targeted, including those of high-profile victims in Italy, the U.S., Japan and Europe.Read More
On January 13, college student Zachary Shames pleaded guilty to a federal district court in Virginia, US, for authoring Limitless Logger, the malicious keylogger that was used to steal thousands of sensitive user information like passwords and banking credentials. In November 2014, Trend Micro’s Forward Looking Threat Research team (FTR) published a research paper that covered Limitless and how it was used to steal information from thousands of victims. Prior to that, we passed on details that correctly identified Shames as the creator to the FBI. This blog details how we made that link, which we left out of the published research paper.Read More
Two Italians referred to as the “Occhionero brothers” have been arrested and accused of using malware and a carefully-prepared spear-phishing scheme to spy on high-profile politicians and businessmen. This case has been called “EyePyramid”, which we first discussed last week. (Conspiracy theories aside, the name came from a domain name and directory path that was found as part of the research.)Read More