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Android.DownLoader.828.origin

Added to the Dr.Web virus database: 2018-10-30

Virus description added:

SHA1:

  • 1f719b9e02771958c8b5628f7fcbefd5bf5e2d2c
  • aec59af9f92a59db93daa1b9bbd62cf21522677c

A Downloader Trojan that runs on Android devices. It is a modification of the Trojan Android.DownLoader.818.origin. It was first detected on Google Play, distributed by the C8 Mobile developer as games.

#drweb

When launched, the Trojan requests access rights to the SD card of the mobile device as well as administrator privileges. After being granted the privileges, Android.DownLoader.828.origin hides its icon from the apps list on the main screen. For that, it restricts the access to the activity that launches it.

Then the Trojan uses its own service to download the Addon.apk file from the server https://cdn.***rr.us and writes it to the external repository (an SD card or memory available on the mobile device). The file is the adware Trojan Android.HiddenAds.752, but other files can be downloaded too, depending on server setup.

After the download, Android.DownLoader.828.origin prompts the user to install it every 20 seconds with a standard system dialog. The dialog keeps showing until the owner of the affected device agrees to install the application.

Android.DownLoader.828.origin also registers a broadcast receiver that launches a Trojan service upon the following system events:

  • android.net.conn.CONNECTIVITY_CHANGE — Internet connection or disconnection.
  • android.intent.action.BOOT_COMPLETED — operating system loading.

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