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Android.Anzhu

Added to the Dr.Web virus database: 2012-02-28

Virus description added:

A Trojan for Android mobile devices. It is distributed through popular Chinese sites offering free software for Android. The malicious code is incorporated into a legitimate application called “Screen Off And Lock”.

screen screen screen

Once the infected program is launched, the backdoor establishes a connection to the remote server and awaits further commands. The Trojan can stealthily download and install different applications specified by cybercriminals. Using CHMOD and the “pm install –r” command, Android.Anzhu can change an application’s system privileges and covertly install it (only if root access is available).

Moreover, the Trojan can add bookmarks in several most popular browsers for Android. The backdoor does not simply add bookmarks specified by cybercriminals. It changes their attributes marking them as “visited” to make the user believe they have already visited those resources.

Android.Anzhu is able to read data from the Android system log monitoring events related to the launch and opening windows of other applications. The Trojan can also gather various device-related information (for example, the list of installed applications, IMEI, mobile phone number, and other) and send it to cybercriminals.

Curing recommendations


Android

  1. If the mobile device is operating normally, download and install Dr.Web for Android Light. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web для Android Light onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android