Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\svchost.exe
Creates the following files on removable media:
- <Drive name for removable media>:\cnevtf.pif
- <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'
- <Auxiliary element>
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\doc vol meyo yde.exe' = '%TEMP%\doc vol meyo yde.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 execution of the following system utilities:
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Creates and executes the following:
- '%TEMP%\svchost.exe'
- '%TEMP%\doc vol meyo yde.exe'
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\vbc1.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\fon6vdq9.cmdline"
Injects code into
the following system processes:
- <SYSTEM32>\cmd.exe
- <SYSTEM32>\cscript.exe
- <SYSTEM32>\ctfmon.exe
- <SYSTEM32>\winlogon.exe
- %WINDIR%\Explorer.EXE
a large number of user processes.
Restores hooked functions in System Service Descriptor Table (SSDT).
Modifies file system :
Creates the following files:
- %TEMP%\vbc1.tmp
- %TEMP%\RES2.tmp
- C:\autorun.inf
- C:\fais.pif
- %TEMP%\winocgt.exe
- %TEMP%\winbqax.exe
- %TEMP%\fon6vdq9.exe
- <DRIVERS>\frsuq.sys
- %TEMP%\fon6vdq9.out
- %TEMP%\svchost.exe
- %TEMP%\r7xfdr4z.resources
- %TEMP%\H.resources
- %TEMP%\doc vol meyo yde.exe
- %TEMP%\fon6vdq9.0.vb
- %TEMP%\fon6vdq9.cmdline
- %TEMP%\MSNPSharp.dll
- %TEMP%\dmdu.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\cnevtf.pif
- C:\autorun.inf
- C:\fais.pif
Deletes the following files:
- %TEMP%\fon6vdq9.exe
- %TEMP%\fon6vdq9.out
- %TEMP%\fon6vdq9.0.vb
- %TEMP%\winbqax.exe
- %TEMP%\winocgt.exe
- <DRIVERS>\frsuq.sys
- %TEMP%\dmdu.exe
- %TEMP%\svchost.exe
- %TEMP%\doc vol meyo yde.exe
- %TEMP%\fon6vdq9.cmdline
- %TEMP%\vbc1.tmp
- %TEMP%\RES2.tmp
Network activity:
Connects to:
- '17#.#3.169.14':80
- '83.##3.119.197':80
UDP:
- DNS ASK zz##ev.com
- DNS ASK yo##vm.com
- DNS ASK te##sd.com
- DNS ASK fs##oi.com
- DNS ASK il#.#renz.pl
- DNS ASK an#.#renz.pl
- DNS ASK ui##yl.com