We recently discovered a new campaign that we dubbed “Operation Overtrap” for the numerous ways it can infect or trap victims with its payload. The campaign mainly targets online users of various Japanese banks by stealing their banking credentials using a three-pronged attack. Based on our telemetry, Operation Overtrap has been active since April 2019 and has been solely targeting online banking users located in Japan.
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We have been tracking Trickbot banking trojan activity and recently discovered a variant of the malware (detected by Trend Micro as TrojanSpy.Win32.TRICKBOT.TIGOCDC) from distributed spam emails that contain a Microsoft Word document with enabled macro. Once the document is clicked, it drops a heavily obfuscated JS file (JavaScript) that downloads Trickbot as its payload. This malware also checks for the number of running processes in the affected machine; if it detects that it’s in an environment with limited processes, the malware will not proceed with its routine as it assumes that it is running in a virtual environment.
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65 million: the number of times we’ve blocked mobile threats in 2016. By December 2016, the total number of unique samples of malicious Android apps we’ve collected and analyzed hit the 19.2 million mark—a huge leap from the 10.7 million samples collected in 2015.
Indeed, the ubiquity of mobile devices among individual users and organizations, along with advances in technologies that power them, reflect the exponential proliferation, increasing complexity and expanding capabilities of mobile threats.
While the routines and infection chain of mobile threats are familiar territory, 2016 brought threats with increased diversity, scale, and scope to the mobile landscape. More enterprises felt the brunt of mobile malware as BYOD and company-owned devices become more commonplace, while ransomware became rampant as the mobile user base continued to become a viable target for cybercriminals. More vulnerabilities were also discovered and disclosed, enabling bad guys to broaden their attack vectors, fine-tune their malware, increase their distribution methods, and in particular, invade iOS’s walled garden.
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An old banking Trojan has been operating in Europe on a low level has spiked in activity after migrating to Japan. Cybercriminals are using local brand names such as local ISP providers and legitimate looking addresses to fool users into downloading malware that can steal information by monitoring browsers, file transfer protocol (FTP) clients, and mail clients. Its targets? Mostly rural banks.
BEBLOH is a banking Trojan that has been around since as early as 2009. It has outlived several competitors including Zeus, and SpyEye. It is designed to steal money from unsuspecting victims right off their bank accounts without them even noticing. BEBLOH always came up with new defensive measures to avoid AV products, and this time is no different. BEBLOH is also known for hiding in memory and creating a temporary new executable file upon shutdown, and deleting said file after re-infecting the system.
Read MoreWe recently found a new banking Trojan which targeted several banks in South Korea. This isn’t the first, though: in June last year, we saw that several online banking threats widened their range and targeted South Korean banks using various techniques. Throughout the course of monitoring similar threats, we noticed a new wave of banking Trojans targeting South Korean banks…
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