Two related ad fraud malware programs, recently discovered in 34 trojanized Android applications, have already been downloaded roughly 102 million times from the Google Play store, researchers reported.

Dubbed Android.Click.312.origin and Android.Click.313.origin, the malicious clicker trojans appear to be designed primarily to sign users up for paid premium services without their consent, according to a blog post published last week researchers at Russian antivirus company Dr.Web.

The malware has been found in a wide variety of otherwise normal-looking and operable apps, including maps, QR code readers, dictionaries, fitness trackers, route finders, text editors, Muslim-centric apps and more. The blog post has republished a series of app user complaints, which are written in Cyrillic, suggesting the attackers appear to be targeting Russian-speaking users.

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