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Exploit kits: Spring 2018 review

Since our last report on exploit kits, there have been some new developments with the wider adoption of the February Flash zero-day, as well as the inclusion of a new exploit for Internet Explorer. We have not seen that many changes in the drive-by landscape for a long time, although these are the results of improvements closely tied to malspam campaigns and exploits embedded within Microsoft … [Read more...]

Exploit kits: Winter 2018 review

In the past, we used to do a blog series on exploit kits where we would periodically check in on the main players in the market. In March 2017, we wrote the Winter 2017 review, before exploit kit activity dropped down to a whisper. We’ve since discontinued our blog series, for lack of developments. A year later, however, exploit kits are showing signs of life. An uptick in campaigns and the … [Read more...]

New RIG malvertising campaign uses cryptocurrency theme as decoy

For a couple of weeks, we have been observing a malvertising campaign that uses decoy websites to redirect users to the RIG exploit kit. Those sites, whose theme is about cryptocurrencies, were all registered recently and are swapped after a few days of use. The initial redirection starts off from a malvertising redirect, which loads the decoy page containing a third-party JavaScript. The … [Read more...]

GandCrab ransomware distributed by RIG and GrandSoft exploit kits

This post was authored by Vasilios Hioueras and Jérôme Segura Late last week saw the appearance of a new ransomware called GandCrab. Surprisingly, it is distributed via two exploit kits: RIG EK and GrandSoft EK. Why is this surprising? Other than Magnitude EK, which is known to consistently push the Magniber ransomware, other exploit kits have this year mostly dropped other payloads, such as … [Read more...]

Seamless campaign serves RIG EK via Punycode (updated)

Update (2017-12-05): We noted some malvertising chains using a new domain name (newadultthem[.]info) also hosted on the same IP address as the Punycode one. – – The Seamless campaign is one of the most prolific malvertising chains pushing the RIG exploit kit and almost exclusively delivering the Ramnit Trojan. Identification of Seamless is typically easy, due to its use of static … [Read more...]