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Android.Backdoor.917

Added to the Dr.Web virus database: 2018-03-28

Virus description added: 2018-03-28

Technical information

Malicious functions:

Removes its shortcut from the home screen.

Gains access to the ITelephony private interface.

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) 58.64.1####.196:8080
TCP(HTTP/1.1) loc.map.b####.com:80
TCP(HTTP/1.1) www.go####.com:80
TCP(HTTP/1.1) cdn.disp####.spcd####.com:80
TCP(TLS/1.0) ssl.gst####.com:443
TCP(TLS/1.0) www.go####.nl:443
TCP(TLS/1.0) www.go####.com:443
TCP(TLS/1.0) www.gst####.com:443

DNS requests:

1####.i####.com
loc.map.b####.com
ssl.gst####.com
www.go####.com
www.go####.nl
www.gst####.com

HTTP GET requests:

cdn.disp####.spcd####.com/ic.asp
www.go####.com/complete/search?hl=en&client=android&q=1https://www.googl...

HTTP POST requests:

loc.map.b####.com/sdk.php

Modified file system:

Creates the following files:

/data/anr/traces.txt
/data/data/####/al_20171116122545_0
/data/data/####/app_20171116122545_0
/data/data/####/cl_20171116122545_0
/data/data/####/config.txt
/data/data/####/firll.dat
/data/data/####/gps_20171116122545_0
/data/data/####/msg_20171116122545_0
/data/data/####/rt
/data/media/####/ls.db
/data/media/####/ls.db-journal
/data/media/####/yoh.dat
/data/media/####/yol.dat
/data/media/####/yom.dat

Miscellaneous:

Executes next shell scripts:

/system/bin/su
/system/bin/su -c chmod 777 <Package Folder>/files/remoteTasks
/system/bin/su -c chmod 777 <Package Folder>/files/remoteTasks/rt
/system/bin/su -c mount -o remount,rw /
mount -o remount,rw /
sh
sh -c chmod 777 <Package Folder>/files/remoteTasks
sh -c chmod 777 <Package Folder>/files/remoteTasks/rt

Loads the following dynamic libraries:

locSDK5

Uses elevated priveleges.

Contains functionality to send SMS messages automatically.

Gains access to geolocation.

Gains access to network information.

Gains access to telephone information (number, imei, etc.).

Gains access to information about installed applications.

Displays its own windows over windows of other applications.

Gains access to information about incoming/outgoing calls.

Gains access to information about sent/received SMS messages.

Curing recommendations

Android

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.
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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