Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\MediaCenter] 'Start' = '00000002'
Creates the following files on removable media:
- <Drive name for removable media>:\tvydc.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] '%WINDIR%\Explorer.EXE' = '%WINDIR%\Explorer.EXE:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*: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
Executes the following:
- '<SYSTEM32>\svchost.exe' -k krnlsrvc
Injects code into
the following system processes:
- <SYSTEM32>\cscript.exe
a large number of user processes.
Modifies file system :
Creates the following files:
- %TEMP%\hrixh.exe
- C:\lsxcbf.pif
- C:\autorun.inf
- %TEMP%\winloivaa.exe
- %TEMP%\nnailmq
- %TEMP%\aut1.tmp
- <DRIVERS>\lsmoi.sys
- %TEMP%\268828_res.tmp
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\tvydc.exe
- C:\lsxcbf.pif
- <SYSTEM32>\RemjtqC.dll
- C:\autorun.inf
Deletes the following files:
- %TEMP%\winloivaa.exe
- %TEMP%\hrixh.exe
- <DRIVERS>\lsmoi.sys
- %TEMP%\aut1.tmp
- %TEMP%\nnailmq
Moves the following files:
- from %TEMP%\268828_res.tmp to <SYSTEM32>\RemjtqC.dll
Deletes itself.
Network activity:
Connects to:
- 'in####ea.no-ip.org':5811
UDP:
- DNS ASK in####ea.no-ip.org
