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Android.Backdoor.196.origin

Added to the Dr.Web virus database: 2015-11-19

Virus description added:

SHA1:

45e17cab5ea9d1c2865526d7ee8a692f70eb7456

A malicious program targeting Android devices. It is distributed in originally harmless games and applications modified by cybercriminals. The Trojan is a modification of Android.Backdoor.176.origin.

Once launched for the first time, Android.Backdoor.196.origin gathers information about the infected device and sends it to the command and control server. Then it starts monitoring a number of system events—for example, booting of the OS (BOOT_COMPLETED), unlocking of the screen, and so on.

When the device it turned on for the first time after it got infected, Android.Backdoor.196.origin tries to get root privileges using a modified version of Root Master. Then via a root terminal, the Trojan sets the “immutable” attribute for its own APK file. As a result, even if the user uninstalls the Trojan, once the system is rebooted, the malicious program will be reinstalled, and the mobile device will stay infected.

After that, using DexClassLoader, Android.Backdoor.196.origin launches its second component, detected as Adware.Xinyin.1.origin. Depending on the modification of the Trojan, this second component is either downloaded from a remote server or extracted from the Trojan’s body and then decrypted.

Once Adware.Xinyin.1.origin takes over control, it becomes responsible for performing all malicious activities. In particular, it can download and install various programs, send text messages, monitor incoming and outgoing calls and messages, and display advertisements. Moreover, it periodically checks for its own updates.

To receive commands and send various data to cybercriminals, the Trojan and its malicious module use several command and control servers.

The following servers are used to send data to cybercriminals:

  • http://api.****.net;
  • http://rs.****.net;
  • http://rs.201****.com;
  • http://rs.*****.com;
  • http://rs.*****pk.com.

The following servers are used to receive text message parameters:

  • http://pay.fast*****.com;
  • http://base.fast*****.com.

The following servers are used to receive advertisement parameters:

  • http://msg.aol****.com;
  • http://msg.zol****.com.

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

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