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Trend Micro recently unearthed Xavier, an ad library that was discovered by the company’s Reputation Service.

The AdGholas malvertising threat group conducted a new campaign in May and June 2017 using the Astrum exploit kit to infect victims with Mole ransomware – an unusual change-up for these adversaries, who historically have favored banking trojans, according to researchers from Trend Micro and Proofpoint.

To defend against ransomware, Trend Micro’s threat defense experts recommend backing up your files regularly and staying on top of your security updates.
A newly discovered ransomware family incorporates a combination of fileless attack and code-injection, Trend Micro security researchers warn.
According to Trend Micro, a Trojan dubbed Xavier, which is embedded in more than 800 applications on Android’s app store, clandestinely steals and leaks personal data.