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August 11, 2021
In July, the number of user requests to decrypt files affected by encoders increased by 35.2% compared with June. Trojan.Encoder.26996 was the most active, accounting for almost half of all incidents.
The most common threats in July:
User requests to decrypt files affected by encoders increased by almost 35.2% compared to June.
In July 2021, Doctor Web analysts’ attention was drawn to increased incidents of distribution threatening SMS. In our latest virus review, we wrote about user offers to buy fake certificates or QR codes, but the criminals have taken things further - for 50,000 rubles, they now offer users the opportunity to cover up any traces of their having bought the fake products.
The screenshot shows an example of a threatening SMS that contains a proposition to send money to the cybercriminals card. However, there is no information about the possible consequences should the recipient of the chain letter not follow the attacker’s instruction.
In July, Doctor Web analysts discovered a new family of banking trojans for the Android OS, named Coper. These malicious applications have a modular architecture and a number of defense mechanisms. The trojans are able to intercept and send SMS, control notifications, display phishing windows over launched programs, track information entered on the keyboard, and perform other malicious actions.
There was also the emergence of new malware in the Google Play catalog. Among the malware were trojans from the Android.Joker,family, which subscribe victims to paid services, and a malicious program from the Android.FakeApp family. You remember this program as the application that downloaded fraudulent sites where potential victims were asked to receive "payments" from the state.
Among the recorded threats, the most active were again adware trojans and trojans that execute arbitrary code and download other software.
The following July events related to mobile malware were the most noteworthy:
Find out more about malicious and unwanted programs for mobile devices in our special overview.
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