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Added to the Dr.Web virus database: 2015-09-02

Virus description added:

SHA1 42f1bd3653cb134685307eb9a83766f05efb4442

A Trojan designed to install affiliate software on the system and employed by some developers of free applications to generate income. The program is written in Delphi and is not packed. Trojan.RoboInstall.1 is built using RAD Studio XE3, contains two libraries for interaction with OpenSSL, and is distributed though file-sharing resources created by cybercriminals.

Once launched, the Trojan checks integrity of configuration data stored in the overlay. If the file with configuration data is damaged or missing, the Trojan terminates its work displaying an appropriate message:


If the Trojan is launched successfully, it sends the command and control server, whose address is retrieved from the configuration file, POST requests without specifying their types. All information forwarded to the server is compressed with ZLIB and consists of two following parts: signature and data in JSON format (JavaScript Object Notation) implemented as a serialized Delphi object.

The reply that comes from the server is also compressed with ZLIB and contains data in JSON format. The data includes information about downloadable executables and settings on display of installation check boxes. In some cases, such check boxes are missing, and files downloaded by the Trojan get installed without any additional conditions.

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. 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 for Android 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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