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Added to the Dr.Web virus database: 2016-11-27

Virus description added:


  • dfb411d8c6afbf755ed38c98c27efd8716955412

A Trojan that downloads and installs malicious and unwanted applications. The Trojan is installed by the malware program Win32.HLLW.Autoruner2.26762.

If launched with the key –tst, the Trojan creates a mutex that coincides with a file name of its process and goes to infinite sleep mode.

If launched with the key –n79g, the environment is not scanned.

If launched without additional parameters, the Trojan scans the virtual environment and debugging tools. Names of the running processes are checked for the presence of the following matches:


The Windows system registry keys are checked:

HKCU\Software\eEye Digital Security
HKCU\Software\Win Sniffer
HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu2\Programs\APIS32
HKCU\Software\Syser Soft
hklm\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Oracle VM VirtualBox Guest Additions

If more than three matches are found, the detection is considered successful.

The Trojan checks the system registry branch HKLM\Software\Microsoft\Windows NT\CurrentVersion for ProductID matching the following values:


Meanwhile, the malware program checks the content of the folder %PROGRAMFILES% that does not have more than ten nested folders.

The computer name and a user name are also checked: the name of the computer must not coincide with the value “Sandbox”, and the user name—with the value “CurrentUser”.

Using the function GetModuleFileName, the Trojan checks a full path to a file containing a module which belongs to the current process. The obtained value must not coincide with “C:\file.exe”, “c:\self.exe”, “c:\t.exe”, and “c:\myapp.exe”.

The Trojan checks the presence of the running processes perl.exe or python.exe, and a name of the BIOS manufacturer:

"vmware", "virtual", "vmbox", "oracle"

The Trojan checks the presence of virtualization tools using the instructions SIDT, SGDT, SLDT, SMSW, CPUID and tries to find the window named “OLLYDBG”.

If the detection is successful, the Trojan runs the Explore by using the function ShellExecuteW and terminates itself.

If the Trojan does not find anything suspicious, it saves the file on the disk.

News about the Trojan

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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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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