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Trojan.MulDrop.1471.origin

Added to the Dr.Web virus database: 2022-04-07

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'system' = '<SYSTEM32>\system.exe'
Sets the following service settings
  • [<HKLM>\System\CurrentControlSet\Services\Driver] 'ImagePath' = 'C:\Driver.sys'
Creates the following services
  • 'Driver' C:\Driver.sys
Modifies file system
Creates the following files
  • C:\driver.sys
  • C:\pci.sys
  • %WINDIR%\syswow64\klg.dll
  • %WINDIR%\temp\udd4e3e.tmp
  • %WINDIR%\syswow64\ipi.dll
  • %TEMP%\1281189.tmp
Deletes the following files
  • %WINDIR%\temp\udd4e3e.tmp
  • C:\pci.sys
  • C:\driver.sys
Moves itself
  • from <Full path to file> to %WINDIR%\syswow64\system.exe
Miscellaneous
Creates and executes the following
  • '%WINDIR%\syswow64\sc.exe' stop 360rp' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete McSysmon' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete mcmscsvc' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop McSysmon' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop mcmscsvc' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete McODS' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete McShield' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop McODS' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop McShield' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete McProxy' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop McProxy' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop MpfService' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete MpfService' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete McNASvc' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop McNASvc' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete RsRavMon' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop RsRavMon' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete 360rp' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' stop ekrn' (with hidden window)
  • '%WINDIR%\syswow64\sc.exe' delete ekrn' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\rundll32.exe' <SYSTEM32>\klg.dll Execute
  • '%WINDIR%\syswow64\sc.exe' stop ekrn
  • '%WINDIR%\syswow64\sc.exe' delete McSysmon
  • '%WINDIR%\syswow64\sc.exe' delete mcmscsvc
  • '%WINDIR%\syswow64\sc.exe' stop McSysmon
  • '%WINDIR%\syswow64\sc.exe' stop mcmscsvc
  • '%WINDIR%\syswow64\sc.exe' delete McODS
  • '%WINDIR%\syswow64\sc.exe' delete McShield
  • '%WINDIR%\syswow64\sc.exe' stop McODS
  • '%WINDIR%\syswow64\sc.exe' stop McShield
  • '%WINDIR%\syswow64\sc.exe' delete McProxy
  • '%WINDIR%\syswow64\sc.exe' stop McProxy
  • '%WINDIR%\syswow64\sc.exe' stop MpfService
  • '%WINDIR%\syswow64\sc.exe' delete MpfService
  • '%WINDIR%\syswow64\sc.exe' delete McNASvc
  • '%WINDIR%\syswow64\sc.exe' stop McNASvc
  • '%WINDIR%\syswow64\sc.exe' delete RsRavMon
  • '%WINDIR%\syswow64\sc.exe' stop RsRavMon
  • '%WINDIR%\syswow64\sc.exe' delete 360rp
  • '%WINDIR%\syswow64\sc.exe' stop 360rp
  • '%WINDIR%\syswow64\sc.exe' delete ekrn
  • '%WINDIR%\syswow64\rundll32.exe' <SYSTEM32>\ipi.dll Execute

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.

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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

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