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Android.Slicer.1.origin

Added to the Dr.Web virus database: 2016-08-05

Virus description added:

SHA1:

  • 4d465e4f36f82fa2489d2f582ee3a20cb2c17e32

A Trojan for Android that is implemented as a service utility performing a set of simple functions. For example, it monitors the RAM consumption and terminates running processes if necessary. It also allows to control wireless connections, configure the screen brightness, and so on. Nevertheless, it is mainly designed to display advertisements.

Android.Slicer.1.origin is installed on the system by other software programs. This Trojan does not create a shortcut on the screen so that the user cannot launch the application by themselves.

screen #drweb screen #drweb

Once Android.Slicer.1.origin is launched, or once the home screen is turned on or off, or the Wi-Fi module is disabled, the Trojan sends information regarding

  • MEI identifier of the infected device
  • MAC address of the Wi-Fi adapter
  • Name of the device manufacturer
  • OS version

The command and control (C&C) server, in its turn, replies with the following instructions:

  • Add a shortcut to the home screen
  • Display an advertisement
  • Open advertising webpages in the browser or in a Google Play application

screen #drweb screen #drweb

In addition, Android.Slicer.1.origin automatically installs free Google Play applications and buys paid-for ones. This function can be executed if the /system/bin catalog contains a file named .run-us, which is a Trojan—Android.Rootkit.40—similar to the SU utility.)

For that, Android.Slicer.1.origin opens a section in one of the specified applications and runs a standard uiautomator utility, designed to test GUI, with root privileges using Android.Rootkit.40. Then, with the help of this utility and the “uiautomator dump file_name” command, the Trojan creates an XML file that contains information about all the windows and interface elements displayed on the screen at the moment.

Then the Trojan searches for the following indentifiers:

  • com.android.vending:id/buy_button (“Buy” and “Install” buttons);
  • com.android.vending:id/continue_button (“Continue”).

After that, the Trojan uses the “input tap X Y” command (where X and Y are the coordinates of the middle of the button) and starts tapping the button until it disappears from the screen. Thus, the malware program can install any software program on Google Play. However, it can work only on mobile devices running Android 4.3, because Android 4.3 and later have the identifiers of the necessary buttons, and Android.Rootkit.40 cannot operate on devices with SELinux (Android 4.4 and later.)

News about the Trojan

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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