Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'nvsvc32' = '%WINDIR%\nvsvc32.exe'
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'Run' = '%WINDIR%\nvsvc32.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\nvsvc32.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- %WINDIR%\ad1563.exe
- %WINDIR%\nvsvc32.exe
- %WINDIR%\ad1563.exe (downloaded from the Internet)
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\ad1563[1].exe
- %WINDIR%\ad1563.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\np.814e[1]
- C:\sys32
- %WINDIR%\nvsvc32.exe
- %WINDIR%\regedit.com
- <SYSTEM32>\cmd.com
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\nvsvc32.exe
- <Drive name for removable media>:\autorun.inf
- C:\sys32
- %WINDIR%\nvsvc32.exe
- %WINDIR%\regedit.com
- <SYSTEM32>\cmd.com
Network activity:
Connects to:
- 'localhost':1039
- 'np.#14e.com':80
- 'localhost':1036
- 'im###s.sohu.net':80
TCP:
HTTP GET requests:
- np.#14e.com/
- im###s.sohu.net/softwareunion/1/ad1563.exe
UDP:
- DNS ASK np.#14e.com
- DNS ASK im###s.sohu.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: '' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
