Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '363' = 'C:\svchosto.exe'
- [<HKLM>\SOFTWARE\Classes\CLSID\{e17d4f88-5564-41d1-83f2-00a0c90dc003}\shell\Open\Command] '' = '%PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE http://www.hao123.com/?tn=97405087_hao_pg '
- [<HKLM>\SOFTWARE\Classes\CLSID\{e17d4f88-5564-41d1-83f2-00a0c90dc002}\shell\Open\Command] '' = '%PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE http://shop1399222689674.1688.com/ '
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '362' = 'h:\svchosto.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '36555' = '<SYSTEM32>\svchosto.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '360' = 'f:\svchosto.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '361' = 'g:\svchosto.exe'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\IMWMRTYD] 'ImagePath' = '<DRIVERS>\IMWMRTYD.sys'
Creates the following files on removable media:
- <Drive name for removable media>:\svchosto.exe
- <Drive name for removable media>:\AutoRun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
Creates and executes the following:
- '<SYSTEM32>\svchdsossss.exe'
- '%WINDIR%\shevvootst.exe'
- '<SYSTEM32>\Setup\servero.exe'
- '<SYSTEM32>\svchdsort.exe'
Executes the following:
- '<SYSTEM32>\wbem\wmiadap.exe' /R /T
- '<SYSTEM32>\cmd.exe' /c c:\delus.bat
- '<SYSTEM32>\regini.exe' regini.ini
Hooks the following functions in System Service Descriptor Table (SSDT):
- NtWriteVirtualMemory, handler: IMWMRTYD.sys
- NtReadVirtualMemory, handler: IMWMRTYD.sys
- NtOpenProcess, handler: IMWMRTYD.sys
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- C:\delus.bat
- %WINDIR%\shevvootst.exe
- C:\svchosto.exe
- C:\AutoRun.inf
- <SYSTEM32>\Setup\servero.exe
- <DRIVERS>\IMWMRTYD.sys
- <SYSTEM32>\svchdsort.exe
- <SYSTEM32>\regini.ini
- <SYSTEM32>\svchdsossss.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\svchosto.exe
- <Drive name for removable media>:\AutoRun.inf
- C:\svchosto.exe
- C:\AutoRun.inf
Deletes the following files:
- <SYSTEM32>\svchdsossss.exe
- <SYSTEM32>\regini.ini
- <DRIVERS>\IMWMRTYD.sys
Moves the following files:
- from <SYSTEM32>\Setup\servero.exe to %WINDIR%\svchost.exe
Network activity:
Connects to:
- 'localhost':2014
- 'ji#####wnload.2345.cn':80
- 'qw####800.gicp.net':2013
- 'localhost':1037
- 'www.ha##23.com':80
TCP:
HTTP GET requests:
- ji#####wnload.2345.cn/jifen_2345/p3_k61539783_jg5WdGMIHVpWud2V9HTY2_v14.12.1.exe
- www.ha##23.com/?tn################
UDP:
- DNS ASK ji#####wnload.2345.cn
- DNS ASK qw####800.gicp.net
- DNS ASK www.ha##23.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''