FOR CUSTOMERS

Close

Library
My library

+ Add to library

Search
Search

Contact us
24/7 Tech support | Rules regarding submitting

Send a message

A query form

Call us

+7 (495) 789-45-86

Forum

Your tickets

New ticket

Call us

+7 (495) 789-45-86

Profile

EN

RU CN DE EN ES FR IT JP KZ UZ PL BY
Close
Support services
Scanners
Dr.Web vxCube
Trial
VCI investigations
Virus library
Knowledge base

Technologies

Terminology

Training and education

Myths

News

Trojan.MulDrop5.276

Added to the Dr.Web virus database: 2013-10-11

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Classes\cclaunch\shell\open\command] '' = '"%PROGRAM_FILES%\CCleaner\ccleaner.exe" /%1'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'GrpConv' = 'grpconv -o'
  • [<HKLM>\SOFTWARE\Classes\MSProgramGroup\Shell\Open\Command] '' = '<SYSTEM32>\grpconv.exe %1'
Malicious functions:
Creates and executes the following:
  • '%TEMP%\RarSFX0\WinborgXP-App-Installer.exe'
Executes the following:
  • '<SYSTEM32>\rundll32.exe' syssetup,SetupInfObjectInstallAction DefaultInstall 128 %TEMP%\RarSFX0\ccleaner.inf
  • '<SYSTEM32>\runonce.exe' -r
  • '<SYSTEM32>\grpconv.exe' -o
Modifies file system :
Creates the following files:
  • %TEMP%\RarSFX0\i386\winapp2.ini
  • %PROGRAM_FILES%\CCleaner\Lang\SET1C.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET1B.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET1A.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET19.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET18.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET17.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET16.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET15.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET14.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET13.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET12.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET11.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET10.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SETF.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SETE.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SETD.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SETC.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SETB.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SETA.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET9.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET8.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET7.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET6.tmp
  • %PROGRAM_FILES%\CCleaner\SET4.tmp
  • %PROGRAM_FILES%\CCleaner\SET5.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET1D.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET1E.tmp
  • %HOMEPATH%\Start Menu\Programs\CCleaner\CCleaner.lnk
  • %PROGRAM_FILES%\CCleaner\ccleaner.ini
  • %PROGRAM_FILES%\CCleaner\SET34.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET33.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET32.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET31.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET30.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET2F.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET2E.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET2D.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET2C.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET2A.tmp
  • %TEMP%\RarSFX0\i386\lang-1066.dll
  • %PROGRAM_FILES%\CCleaner\Lang\SET29.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET28.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET27.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET26.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET25.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET24.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET23.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET22.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET21.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET20.tmp
  • %PROGRAM_FILES%\CCleaner\Lang\SET1F.tmp
  • %PROGRAM_FILES%\CCleaner\SET3.tmp
  • %TEMP%\RarSFX0\icon.ico
  • %TEMP%\RarSFX0\WinborgXP-App-Installer.au3
  • %TEMP%\RarSFX0\i386\lang-1043.dll
  • %TEMP%\RarSFX0\i386\lang-1042.dll
  • %TEMP%\RarSFX0\i386\lang-1041.dll
  • %TEMP%\RarSFX0\i386\lang-1040.dll
  • %TEMP%\RarSFX0\i386\lang-1038.dll
  • %TEMP%\RarSFX0\i386\lang-1037.dll
  • %TEMP%\RarSFX0\i386\lang-1036.dll
  • %TEMP%\RarSFX0\i386\lang-1035.dll
  • %TEMP%\RarSFX0\i386\lang-1034.dll
  • %TEMP%\RarSFX0\i386\lang-1032.dll
  • %TEMP%\RarSFX0\i386\lang-1031.dll
  • %TEMP%\RarSFX0\i386\lang-1030.dll
  • %TEMP%\RarSFX0\i386\lang-1029.dll
  • %TEMP%\RarSFX0\i386\lang-1028.dll
  • %TEMP%\RarSFX0\i386\lang-1027.dll
  • %TEMP%\RarSFX0\i386\lang-1026.dll
  • %TEMP%\RarSFX0\i386\lang-1025.dll
  • %TEMP%\RarSFX0\WinborgXP-App-Installer.exe
  • %TEMP%\RarSFX0\i386\uninst.exe
  • %TEMP%\RarSFX0\i386\CCleaner.exe
  • %TEMP%\RarSFX0\i386\CCEnhancer.exe
  • %TEMP%\RarSFX0\ccleaner.inf
  • %TEMP%\RarSFX0\i386\lang-1045.dll
  • %TEMP%\RarSFX0\i386\lang-1046.dll
  • %TEMP%\RarSFX0\i386\lang-1044.dll
  • %TEMP%\RarSFX0\i386\lang-1048.dll
  • %TEMP%\RarSFX0\i386\lang-9999.dll
  • %TEMP%\RarSFX0\i386\lang-1049.dll
  • %TEMP%\RarSFX0\i386\lang-5146.dll
  • %TEMP%\RarSFX0\i386\lang-3098.dll
  • %TEMP%\RarSFX0\i386\lang-2074.dll
  • %TEMP%\RarSFX0\i386\lang-2070.dll
  • %TEMP%\RarSFX0\i386\lang-2052.dll
  • %TEMP%\RarSFX0\i386\lang-1110.dll
  • %TEMP%\RarSFX0\i386\lang-1087.dll
  • %TEMP%\RarSFX0\i386\lang-1079.dll
  • %TEMP%\RarSFX0\i386\lang-1071.dll
  • %TEMP%\RarSFX0\i386\lang-1068.dll
  • %PROGRAM_FILES%\CCleaner\Lang\SET2B.tmp
  • %HOMEPATH%\Start Menu\Programs\CCleaner\CCEnhancer.lnk
  • %TEMP%\RarSFX0\i386\lang-1065.dll
  • %TEMP%\RarSFX0\i386\lang-1063.dll
  • %TEMP%\RarSFX0\i386\lang-1061.dll
  • %TEMP%\RarSFX0\i386\lang-1060.dll
  • %TEMP%\RarSFX0\i386\lang-1059.dll
  • %TEMP%\RarSFX0\i386\lang-1058.dll
  • %TEMP%\RarSFX0\i386\lang-1055.dll
  • %TEMP%\RarSFX0\i386\lang-1053.dll
  • %TEMP%\RarSFX0\i386\lang-1052.dll
  • %TEMP%\RarSFX0\i386\lang-1051.dll
  • %TEMP%\RarSFX0\i386\lang-1050.dll
  • %TEMP%\RarSFX0\i386\lang-1067.dll
  • %HOMEPATH%\Start Menu\Programs\CCleaner\Uninstall CCleaner.lnk
Deletes the following files:
  • %TEMP%\RarSFX0\ccleaner.inf
  • %TEMP%\RarSFX0\i386\lang-1052.dll
  • %TEMP%\RarSFX0\i386\lang-1053.dll
  • %TEMP%\RarSFX0\i386\lang-1055.dll
  • %TEMP%\RarSFX0\i386\lang-1058.dll
  • %TEMP%\RarSFX0\i386\lang-1059.dll
  • %TEMP%\RarSFX0\i386\lang-1060.dll
  • %TEMP%\RarSFX0\i386\lang-1061.dll
  • %TEMP%\RarSFX0\i386\lang-1063.dll
  • %TEMP%\RarSFX0\i386\lang-1065.dll
  • %TEMP%\RarSFX0\i386\lang-1066.dll
  • %TEMP%\RarSFX0\i386\lang-1032.dll
  • %TEMP%\RarSFX0\i386\lang-1067.dll
  • %TEMP%\RarSFX0\i386\lang-1071.dll
  • %TEMP%\RarSFX0\i386\lang-1079.dll
  • %TEMP%\RarSFX0\i386\lang-1087.dll
  • %TEMP%\RarSFX0\i386\lang-1110.dll
  • %TEMP%\RarSFX0\i386\lang-2052.dll
  • %TEMP%\RarSFX0\i386\lang-2070.dll
  • %TEMP%\RarSFX0\i386\lang-2074.dll
  • %TEMP%\RarSFX0\i386\lang-3098.dll
  • %TEMP%\RarSFX0\i386\lang-5146.dll
  • %TEMP%\RarSFX0\i386\lang-9999.dll
  • %TEMP%\RarSFX0\i386\lang-1050.dll
  • %TEMP%\RarSFX0\i386\lang-1051.dll
  • %TEMP%\RarSFX0\i386\lang-1049.dll
  • %TEMP%\RarSFX0\i386\lang-1048.dll
  • %TEMP%\RarSFX0\i386\lang-1046.dll
  • %TEMP%\RarSFX0\WinborgXP-App-Installer.au3
  • %TEMP%\RarSFX0\WinborgXP-App-Installer.exe
  • %TEMP%\RarSFX0\i386\CCEnhancer.exe
  • %TEMP%\RarSFX0\i386\CCleaner.exe
  • %TEMP%\RarSFX0\i386\lang-1025.dll
  • %TEMP%\RarSFX0\i386\lang-1026.dll
  • %TEMP%\RarSFX0\i386\lang-1027.dll
  • %TEMP%\RarSFX0\i386\lang-1028.dll
  • %TEMP%\RarSFX0\i386\lang-1029.dll
  • %TEMP%\RarSFX0\i386\lang-1030.dll
  • %TEMP%\RarSFX0\i386\uninst.exe
  • %TEMP%\RarSFX0\i386\lang-1068.dll
  • %TEMP%\RarSFX0\i386\lang-1031.dll
  • %TEMP%\RarSFX0\i386\lang-1035.dll
  • %TEMP%\RarSFX0\i386\lang-1036.dll
  • %TEMP%\RarSFX0\i386\lang-1037.dll
  • %TEMP%\RarSFX0\i386\lang-1038.dll
  • %TEMP%\RarSFX0\i386\lang-1040.dll
  • %TEMP%\RarSFX0\i386\lang-1041.dll
  • %TEMP%\RarSFX0\i386\lang-1042.dll
  • %TEMP%\RarSFX0\i386\lang-1043.dll
  • %TEMP%\RarSFX0\i386\lang-1044.dll
  • %TEMP%\RarSFX0\i386\lang-1045.dll
  • %TEMP%\RarSFX0\icon.ico
  • %TEMP%\RarSFX0\i386\lang-1034.dll
  • %TEMP%\RarSFX0\i386\winapp2.ini
Moves the following files:
  • from %PROGRAM_FILES%\CCleaner\SET3.tmp to %PROGRAM_FILES%\CCleaner\CCleaner.exe
  • from %PROGRAM_FILES%\CCleaner\Lang\SET1F.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1053.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET20.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1055.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET21.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1058.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET22.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1059.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET23.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1060.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET24.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1061.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET25.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1063.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET26.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1065.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET27.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1066.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SETF.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1035.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET28.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1067.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET2A.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1071.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET2B.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1079.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET2C.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1087.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET2D.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1110.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET2E.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-2052.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET2F.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-2070.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET30.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-2074.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET31.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-3098.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET32.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-5146.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET1D.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1051.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET1E.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1052.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET1C.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1050.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET1B.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1049.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET1A.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1048.dll
  • from %PROGRAM_FILES%\CCleaner\SET5.tmp to %PROGRAM_FILES%\CCleaner\CCEnhancer.exe
  • from %PROGRAM_FILES%\CCleaner\Lang\SET6.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1025.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET7.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1026.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET8.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1027.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET9.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1028.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SETA.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1029.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SETB.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1030.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SETC.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1031.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SETD.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1032.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET33.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-9999.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET29.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1068.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SETE.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1034.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET11.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1037.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET12.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1038.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET13.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1040.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET14.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1041.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET15.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1042.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET16.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1043.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET17.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1044.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET18.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1045.dll
  • from %PROGRAM_FILES%\CCleaner\Lang\SET19.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1046.dll
  • from %PROGRAM_FILES%\CCleaner\SET4.tmp to %PROGRAM_FILES%\CCleaner\uninst.exe
  • from %PROGRAM_FILES%\CCleaner\Lang\SET10.tmp to %PROGRAM_FILES%\CCleaner\Lang\lang-1036.dll
  • from %PROGRAM_FILES%\CCleaner\SET34.tmp to %PROGRAM_FILES%\CCleaner\winapp2.ini
Miscellaneous:
Searches for the following windows:
  • ClassName: 'EDIT' WindowName: '(null)'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'

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.
Free trial

 

Download Dr.Web

Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

Free trial

 

Download Dr.Web

Download by serial number

Download on App Store

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

Free trial

 

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

Free trial

14 days

Download now
Get it on Google Play