Technical Information
To ensure autorun and distribution:
Creates the following files on removable media:
- <Drive name for removable media>:\ihvmv.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] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\WeekEnd.exe' = '%TEMP%\WeekEnd.exe:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '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:
- %TEMP%\RarSFX0\maincit.exe
- %TEMP%\asd.exe
- %TEMP%\WeekEnd.exe
Injects code into
the following system processes:
- <SYSTEM32>\cscript.exe
a large number of user processes.
Modifies file system :
Creates the following files:
- %TEMP%\dw.log
- %TEMP%\RarSFX0\www.talk-take.com.dll
- %TEMP%\19A56.dmp
- C:\dqpjp.exe
- C:\autorun.inf
- %TEMP%\oyolft.exe
- %TEMP%\0001894F_Rar\WeekEnd.exe
- %TEMP%\asd.exe
- %TEMP%\WeekEnd.exe
- %TEMP%\winnqysd.exe
- %TEMP%\RarSFX0\maincit.exe
- %TEMP%\00019073_Rar\WeekEnd.exe
- %TEMP%\00018DC4_Rar\WeekEnd.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\ihvmv.pif
- C:\autorun.inf
- C:\dqpjp.exe
Deletes the following files:
- %TEMP%\oyolft.exe
- %TEMP%\winnqysd.exe
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: 'HSUpdate'
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'EDIT' WindowName: ''
