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April 6, 2023
The number of user requests to decrypt files affected by encoder trojans decreased by 17.63%, compared to the previous month. Most often victims of these encoder trojans were targeted by Trojan.Encoder.3953, Trojan.Encoder.26996, and Trojan.Encoder.35534.
During February, Doctor Web’s specialists discovered dozens of new malicious apps on Google Play. Among them were many fake apps capable of loading fraudulent and unwanted sites, as well as trojans that subscribed Android device users to paid services.
The most common threats of the month:
In February, the number of requests to decrypt files affected by encoder trojans decreased by 17.63%, compared to January.
In February, Doctor Web’s Internet analysts continued detecting the emergence of fraudulent websites. Among them were other online resources that allegedly allowed visitors to make money through investments. On such sites, users were asked to take a poll, and then to provide their personal data for account registration. This information, if entered, ended up in the scammers' hands and later could be used in various attacks. In addition, malicious actors continued trying to lure potential victims onto websites that offered allegedly free lottery tickets. Every visitor of such a web resource was a “winner”. To receive their non-existent prize, users had to pay a “commission” or pay for the “delivery” of their money.
The screenshots above demonstrate examples of pages of one of these fraudulent websites. A visitor has allegedly won 224.138 rubles in an online lottery draw. In order to “receive” their prize, the victim is asked to provide their bankcard information and pay a “commission” of 1,176 rubles.
According to detection statistics collected by Dr.Web for Android, in February, users once again most often encountered trojans from the Android.HiddenAds family. At the same time, banking trojans, ransomware, and spyware malware posed less of a threat. With that, during the month, Doctor Web’s specialists discovered dozens of new malicious apps on Google Play. Among them were programs from the Android.FakeApp family, which were capable of loading fraudulent and other unwanted websites, and also trojan applications from the Android.Joker and Android.Subscription families, which subscribe users to paid services.
The following February events involving mobile malware are the most noteworthy:
Find out more about malicious and unwanted programs for mobile devices in our special overview.