Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'UserInit' = '<SYSTEM32>\userinit.exe,%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MicroUpdate' = '%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\ubesk.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\winlogon.exe' = '<SYSTEM32>\winlogon.exe:*:enabled:@shell32.dll,-1'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\Explorer.EXE' = '%WINDIR%\Explorer.EXE:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\RarSFX1\command.exe' = '%TEMP%\RarSFX1\command.exe:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Creates and executes the following:
- '%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
- '%TEMP%\RarSFX1\command.exe'
- '%TEMP%\RarSFX0\command.sfx.exe' -p1qa -d%HOMEPATH%\Local Settings\Temp
Executes the following:
- '<SYSTEM32>\attrib.exe' "%TEMP%\RarSFX1" +s +h
- '<SYSTEM32>\notepad.exe'
- '<SYSTEM32>\cmd.exe' /c ""%TEMP%\RarSFX0\Latest.bat" "
- '<SYSTEM32>\attrib.exe' "%TEMP%\RarSFX1\command.exe" +s +h
Injects code into
the following system processes:
- <SYSTEM32>\attrib.exe
a large number of user processes.
Modifies file system :
Creates the following files:
- %TEMP%\winvhpm.exe
- <DRIVERS>\hodml.sys
- %TEMP%\00026C7B_Rar\msdcsc.exe
- C:\qsfoso.exe
- C:\autorun.inf
- %TEMP%\jidf.exe
- %TEMP%\00026BFE_Rar\msdcsc.exe
- %TEMP%\RarSFX1\command.exe
- %TEMP%\RarSFX0\command.sfx.exe
- %TEMP%\RarSFX0\Latest.bat
- %HOMEPATH%\My Documents\MSDCSC\msdcsc.exe
- %TEMP%\000233C8_Rar\command.exe
Sets the 'hidden' attribute to the following files:
- C:\qsfoso.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\ubesk.exe
- %HOMEPATH%\My Documents\MSDCSC\msdcsc.exe
- %TEMP%\RarSFX1\command.exe
- C:\autorun.inf
Deletes the following files:
- <DRIVERS>\hodml.sys
- %TEMP%\winvhpm.exe
- %TEMP%\jidf.exe
- %TEMP%\00026C7B_Rar\msdcsc.exe
- %TEMP%\RarSFX1\command.exe
- %TEMP%\000233C8_Rar\command.exe
- %TEMP%\00026BFE_Rar\msdcsc.exe
Modifies the HOSTS file.
Network activity:
Connects to:
- 'bu####g.ddns.net':300
- 'il#.#renz.pl':80
UDP:
- DNS ASK bu####g.ddns.net
- DNS ASK il#.#renz.pl
Miscellaneous:
Searches for the following windows:
- ClassName: 'SysListView32' WindowName: ''
- ClassName: '#32770' WindowName: ''
- ClassName: '#32770' WindowName: '<Auxiliary name>'
- ClassName: '#32770' WindowName: '<SYSTEM32>\cmd.exe'
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'EDIT' WindowName: ''
- ClassName: '#32770' WindowName: 'WinRAR self-extracting archive'
- ClassName: 'Indicator' WindowName: ''
