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Added to the Dr.Web virus database: 2011-10-21

Virus description added:

A Trojan designed to steal passwords from online banking services.

During the installation, it deletes the key of the system registry SOFTWARE\Microsoft\Timer.
Installs the Trojan.Hosts.5006(sys) rootkit to the %WINDOWS%\xkkop.sys file.

Then into the %systemroot% folder it places the host5 file containing the following data:

188. XXX.YYY.21
188. XXX.YYY.21
188. XXX.YYY.21
188. XXX.YYY.21
188. XXX.YYY.21
188. XXX.YYY 30
188. XXX.YYY.30
188. XXX.YYY.30
188. XXX.YYY.30

The Trojan searches for the avp.exe process among the running processes. If avp.exe cannot be found, the malware registers the driver with the name mkdrv %WINDOWS%\xkkop.sys, runs it, and deletes the original launch file. If the avp.exe process is found, the Trojan extracts the ldr.dll library from its body and enters the value SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce rundll32.exe ldr.dll,Prkt to the system registry sub-tree responsible for auto run. After the system is restarted, ldr.dll is run. It deletes SOFTWARE\Microsoft\Windows\CurrentVersion\Run rundll32.exe=ldr.dll,Prkt, registers the driver with the name mkdrv %WINDOWS%\xkkop.sys, and launches it. Original launch file is deleted using a special BAT file.

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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