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Android.BackDoor.44

Added to the Dr.Web virus database: 2015-08-25

Virus description added:

SHA1: 36cb23ad887d1abd81bb34ad74c3806c1dbb7241

Android.BackDoor.44 is an executable UNIX file designed to run on Android mobile devices. It is incorporated into Android.Backdoor.260.origin as an additional module.

Once launched, the Trojan activates the libsleep4.so library (Android.BackDoor.46) and the libstay2.so library (Android.BackDoor.43) that are also embedded into Android.Backdoor.260.origin.

It can execute the following commands:

  • DOW—download a file form the server
  • UPL—upload a file to the server
  • PLI, PDL, SDA—update malicious modules and settings
  • DIR—get the list of files residing in the specified folder
  • DTK—write the contents of the specified folder into a file
  • OSC, STK—run a search for the specified file of folder
  • OSF—abort the search of the specified file
  • DEL—delete the specified file
  • SCP—take a screenshot
  • BGS—activate the microphone and start recording
  • GPRS—start tracking GPS coordinates

While some commands are executed by Android.BackDoor.44 on its own, other commands are carried out with the help of other malicious libraries incorporated into Android.Backdoor.260.origin. The libraries communicate with each other through UNIX sockets.

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