Android.BackDoor.40 is an executable UNIX file designed to run on Android mobile devices. It is incorporated into Android.Backdoor.260.origin as an additional module.

Unlike Android.BackDoor.42, to which Android.BackDoor.40 is similar in many ways, this Trojan does not get installed into a system folder, but resides locally in the folder of Android.Backdoor.260.origin. Moreover, it communicates with other malicious components through UNIX sockets by calling a Java code to get contact list data, monitor SMS messages, and track GPS coordinates of the infected device.

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.

Technologies

Terminology

Training and education

Myths

Android.BackDoor.40

Curing recommendations

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