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Pulse VPN patched their vulnerability, but businesses are trailing behind

In April 2019, Pulse Secure published an advisory about a vulnerability in their software. In August, cybercriminals were massively scanning for systems that were running a vulnerable version. Now it’s October, and still many organizations have not applied the patches that are available for this vulnerability. This is a trend we’ve seen repeated with dozens of other publicly-known … [Read more...]

Five years later, Heartbleed vulnerability still unpatched

The Heartbleed vulnerability was introduced into the OpenSSL crypto library in 2012. It was discovered and fixed in 2014, yet today—five years later—there are still unpatched systems.  This article will provide IT teams with the necessary information to decide whether or not to apply the Heartbleed vulnerability fix. However, we caution: The latter could leave your users’ data exposed to future … [Read more...]

The Hidden Bee infection chain, part 1: the stegano pack

About a year ago, we described the Hidden Bee miner delivered by the Underminer Exploit Kit. Hidden Bee has a complex and multi-layered internal structure that is unusual among cybercrime toolkits, making it an interesting phenomenon on the threat landscape. That’s why we’re dedicating a series of posts to exploring particular elements and updates made during one year of its … [Read more...]

A week in security (July 29 – August 4)

Last week on Malwarebytes Labs we discussed the security and privacy changes in Android Q, how to get your Equifax money and stay safe doing it, and we looked at the strategy of getting a board of directors to invest in government cybersecurity. We also reviewed how a Capital One breach exposed over 100 million credit card applications, analyzed the exploit kit activity in the summer of 2019, and … [Read more...]

Exploit kits: summer 2019 review

In the months since our last spring review, there has been some interesting activity from several exploit kits. While the playing field remains essentially the same with Internet Explorer and Flash Player as the most-commonly-exploited, it is undeniable that there has been a marked effort from exploit kit authors to add some rather cool tricks to their arsenal. For example, several exploit kits … [Read more...]

Hidden Bee: Let’s go down the rabbit hole

Some time ago, we discussed the interesting malware, Hidden Bee. It is a Chinese miner, composed of userland components, as well as of a bootkit part. One of its unique features is a custom format used for some of the high-level elements (this format was featured in my recent presentation at SAS). Recently, we stumbled upon a new sample of Hidden Bee. As it turns out, its authors decided to … [Read more...]

Exploit kits: spring 2019 review

Exploit kit activity remains fairly unchanged since our last winter review in terms of active distribution campaigns. But this spring edition will feature a new exploit kit and another atypical EK, in that it specifically goes after routers. The main driver behind these drive-by download attacks are various malvertising chains with strong geolocation filtering. This explains why some exploit … [Read more...]

Vital infrastructure: Threats target financial institutions, fintech, and cryptocurrencies

With news of a malware attack on accounting firm Wolters Kluwer causing a “quiet panic” in the accounting world this week, our assertion that financial institutions—from banks to brokers—are part of the vital infrastructure of society has been solidified. According to its website, Wolters Kluwer provides software and services to all of the top 100 accounting firms in the United … [Read more...]

A week in security (February 11 – 17)

Last week on Malwarebytes Labs we discussed the return of the Sextortion Bitcoin scams, we gave you an early overview of the exploit kits in the winter of 2019, we talked about the destruction of VFEmail service, for consumers we discussed whether you should remove yourself from social media, for businesses we discussed the implementation of an anti-phishing plan, and the concept of whole team … [Read more...]

Exploit kits: winter 2019 review

Active malvertising campaigns in December and the new year have kept exploit kit activity from hibernating in winter 2019. We mostly observed Fallout and RIG with the occasional, limited GrandSoft appearance for wider geo-targeting. In addition, narrowly-focused exploit kits such as Magnitude, Underminer, and GreenFlash Sundown stayed on the same track: delivering ransomware to mostly Asian … [Read more...]