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Added to the Dr.Web virus database: 2018-10-19

Virus description added:


  • 15962a1dd8f9b52891f9b62461e42541d7c182fe

A Downloader Trojan for Android devices. It was first detected on Google Play, where it was distributed as the Turbo VPN application - Unlimited Free VPN & Proxy, designed for VPN. Android.DownLoader.818.origin is based on the open-source OpenVPN for Android project.

When launched, the Trojan prompts the user to grant it access to the SD card of the device with the following message:

Android.DownLoader.818.origin #drweb

When the access is granted, Android.DownLoader.818.origin requests administrative privileges.


After the Trojan is assigned the device administrator, it hides its icon from the app list on the main screen. For that, it restricts the access to the activity that launches it.

Then Android.DownLoader.818.origin uses its own to download the Addon.apk file from the server https://cdn.*****vpn and writes it to the external repository (an SD card or the available memory on the mobile device). The file is the adware Trojan Android.HiddenAds.710, but other files can be downloaded too, depending on server configuration.

After the download, Android.DownLoader.818.origin prompts the user to install it every 20 seconds with a standard system dialog:

Android.DownLoader.818.origin #drweb

The dialog keeps showing until the owner of the affected device agrees to install the application.

Android.DownLoader.818.origin also registers the broadcast receiver that launches the Trojan service upon the following system events:

  •—Internet connection or disconnection.
  •—WiFi module power on or off.
  • android.intent.action.BOOT_COMPLETED—operating system loading.

News about the Trojan

Curing recommendations


  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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Doctor Web es el desarrollador de los medios antivirus de protección de la información bajo la marca Dr.Web. Los productos Dr.Web se desarrollan a partir del año 1992.