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Added to the Dr.Web virus database: 2017-04-21

Virus description added:


  • 16b84004778505afbcc1032d1325c9bed8679b79

An encryption Trojan for Windows. Launches an application %SYSTEM%\svchost.exe on the attacked computer and infiltrates its process, then starts a separate thread to remove its own copy. Contains an encrypted library in its body and uses it to access onion sites in the TOR network. The Trojan loads the network to the memory on its own.

It also contains an encrypted public part of master key. The encryption ransomware generates an RSA pair and saves it to a file with a name created by the template *-Bravo NEW-*.key. The file is saved to the folder %COMMON_APPDATA% and encrypted, the resulting file has the following name: *-Bravo NEW-*.key.aes_ni_0day. Files are encrypted with the AES algorithm, a key for AES is encrypted with the public key of the generated RSA pair and written in the end of the file. In the end of files the following information is saved:

0x000x08Marker (453728192A384756)
0x080x21PCID and terminating null
0x29varOriginal file name
0x2330x100The encrypted AES key of the file, RSA encryption (with the public key of the generated pair)

In the end of May 2017, private part of the Trojan’s master key was made public, so decryption of corrupted files is now possible.

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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Download by serial number

  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