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Trojan.MulDrop7.658

Added to the Dr.Web virus database: 2016-11-10

Virus description added:

Technical Information

Malicious functions:
Executes the following:
  • '<LS_APPDATA>\BeepApp.exe' 660 1000
  • '<LS_APPDATA>\BeepApp.exe' 528 1000
  • '<LS_APPDATA>\BeepApp.exe' 594 1000
  • '<LS_APPDATA>\Sleep.exe' 500
  • '<LS_APPDATA>\BeepApp.exe' 1584 250
  • '<LS_APPDATA>\BeepApp.exe' 1320 750
  • '<LS_APPDATA>\BeepApp.exe' 990 500
  • '<LS_APPDATA>\BeepApp.exe' 660 500
  • '<LS_APPDATA>\BeepApp.exe' 880 1000
  • '<LS_APPDATA>\BeepApp.exe' 838 2000
  • '<LS_APPDATA>\BeepApp.exe' 528 500
  • '<LS_APPDATA>\BeepApp.exe' 495 1000
  • '<LS_APPDATA>\BeepApp.exe' 440 1000
  • '<LS_APPDATA>\BeepApp.exe' 419 1000
  • '<LS_APPDATA>\BeepApp.exe' 1760 500
  • '<LS_APPDATA>\BeepApp.exe' 1188 250
  • '<LS_APPDATA>\BeepApp.exe' 1320 125
  • '<LS_APPDATA>\BeepApp.exe' 1188 125
  • '<LS_APPDATA>\BeepApp.exe' 1056 250
  • '<SYSTEM32>\cmd.exe' /c %TEMP%\a99807.bat <Full path to file>
  • '<LS_APPDATA>\BeepApp.exe' 1320 500
  • '<LS_APPDATA>\BeepApp.exe' 990 250
  • '<LS_APPDATA>\BeepApp.exe' 1056 500
  • '<LS_APPDATA>\Sleep.exe' 250
  • '<LS_APPDATA>\BeepApp.exe' 1408 250
  • '<LS_APPDATA>\BeepApp.exe' 1188 500
  • '<LS_APPDATA>\BeepApp.exe' 880 500
  • '<LS_APPDATA>\BeepApp.exe' 880 250
  • '<LS_APPDATA>\BeepApp.exe' 990 750
Terminates or attempts to terminate
a large number of user processes.
Modifies file system:
Creates the following files:
  • %TEMP%\a99807.bat
  • <LS_APPDATA>\Sleep.exe
  • <LS_APPDATA>\BeepApp.exe
Sets the 'hidden' attribute to the following files:
  • %TEMP%\a99807.bat
Deletes the following files:
  • <LS_APPDATA>\Sleep.exe
  • <LS_APPDATA>\BeepApp.exe
  • %TEMP%\a99807.bat

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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Download by serial number

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.

Download Dr.Web

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