Researchers are warning that usernames, passwords and other credentials of online banking users in Japan may be compromised thanks to a Trojan that builds off of previous vulnerabilities in Adobe Flash Player and Microsoft’s Internet Explorer (IE).

An alert from ESET, which provides online scanning tools, offered details on Brolux, a Trojan that cybercriminals are using to track online banking activity by monitoring the URLs consumers visit. Brolux works by installing a pair of configuration files that contain both URLs that can be cross-referenced and popular Japanese financial services firms’ window titles. If cybercriminals see an opportunity, potential victims are directed to a page that resembles the country’s Financial Services Agency or the Japanese Public Prosecutor’s Office.

As SecurityWeek pointed out, this is just the latest instance of malware creators targeting Japanese online banking users. Although the degree of organized cybercrime in the country is believed to be in its early stages, according to a study from Trend Micro, similar threats hitting customers of financial institutions include malware such as Neverquest, Tsukuba and Shifu.

One of the interesting aspects of Brolux is its use of previously reported bugs in Flash Player and the so-called Unicorn vulnerability in IE. We Live Security compared the malware’s distribution method through an adult website to Win32/Aibatook, which also focused on Japanese online banking customers. In this case, however, the site luring potential victims is aggregating pornographic images and videos from other sites.

Hopefully, anyone who hasn’t already updated or patched Flash Player and IE will do so as news of Brolux spreads. In the meantime, expect many similar threats to emerge as cybercriminals simply modify or tweak previous vulnerabilities and exploits to distribute malware. Shifu, for example, made use of the widely known Angler exploit kit to go after online banking users in the U.K. Other features in Shifu were also reportedly copied from previous Trojans.

In other words, cybercriminals are making no attempt to be original here; they’re simply being as persistent as possible in the hopes of gaining control of more personal information over time.

More from

Data Privacy: How the Growing Field of Regulations Impacts Businesses

The proposed rules over artificial intelligence (AI) in the European Union (EU) are a harbinger of things to come. Data privacy laws are becoming more complex and growing in number and relevance. So, businesses that seek to become — and stay — compliant must find a solution that can do more than just respond to current challenges. Take a look at upcoming trends when it comes to data privacy regulations and how to follow them. Today's AI Solutions On April…

Why Zero Trust Works When Everything Else Doesn’t

The zero trust security model is proving to be one of the most effective cybersecurity approaches ever conceived. Zero trust — also called zero trust architecture (ZTA), zero trust network architecture (ZTNA) and perimeter-less security — takes a "default deny" security posture. All people and devices must prove explicit permission to use each network resource each time they use that resource. Using microsegmentation and least privileged access principles, zero trust not only prevents breaches but also stymies lateral movement should a breach…

5 Golden Rules of Threat Hunting

When a breach is uncovered, the operational cadence includes threat detection, quarantine and termination. While all stages can occur within the first hour of discovery, in some cases, that's already too late.Security operations center (SOC) teams monitor and hunt new threats continuously. To ward off the most advanced threats, security teams proactively hunt for ones that evade the dashboards of their security solutions.However, advanced threat actors have learned to blend in with their target's environment, remaining unnoticed for prolonged periods. Based…

Third-Party App Stores Could Be a Red Flag for iOS Security

Even Apple can’t escape change forever. The famously restrictive company will allow third-party app stores for iOS devices, along with allowing users to “sideload” software directly. Spurring the move is the European Union’s (EU) Digital Markets Act (DMA), which looks to ensure open markets by reducing the ability of digital “gatekeepers” to restrict content on devices. While this is good news for app creators and end-users, there is a potential red flag: security. Here’s what the compliance-driven change means for…