Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'svchost' = '<SYSTEM32>\SVSH0ST.EXE'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\niu.exe
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:
- '<SYSTEM32>\temp2.exe'
- '<SYSTEM32>\temp3.exe'
- '<SYSTEM32>\SVSH0ST.EXE'
- '<SYSTEM32>\temp1.exe'
- '<SYSTEM32>\temp3.exe' (downloaded from the Internet)
- '<SYSTEM32>\temp1.exe' (downloaded from the Internet)
- '<SYSTEM32>\temp2.exe' (downloaded from the Internet)
Executes the following:
- '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL /v CheckedValue /t REG_SZ /d 3 /f
- '<SYSTEM32>\reg.exe' add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\WindowsUpdate /v DisableWindowsUpdateAccess /t REG_dword /d 00000001 /f
- '%PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE' http://www.sh##kyc.cn/tj.asp
- '<SYSTEM32>\wbem\wmiadap.exe' /R /T
- '<SYSTEM32>\net1.exe' start shellHWDetection
- '<SYSTEM32>\reg.exe' add "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /t REG_EXPAND_SZ /d /f
- '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V svchost /T REG_SZ /D <SYSTEM32>\SVSH0ST.EXE /F
- '<SYSTEM32>\reg.exe' add "HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel" /v "HomePage" /t REG_DWORD /d 00000001 /f
- '<SYSTEM32>\cmd.exe' /c ""<Current directory>\<Virus name>.bat""
- '<SYSTEM32>\cmd.exe' /c <Current directory>\<Virus name>.bat
Modifies file system :
Creates the following files:
- <SYSTEM32>\temp2.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\cs2[1].exe
- <SYSTEM32>\temp1.exe
- <SYSTEM32>\temp3.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\cs3[1].exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\tj[1].asp
- <SYSTEM32>\Autorun.inf
- <Current directory>\<Virus name>.bat
- <SYSTEM32>\SVSH0ST.EXE
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\cs1[1].exe
- C:\autorun.inf
- C:\niu.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\niu.exe
- <Drive name for removable media>:\autorun.inf
- C:\niu.exe
- C:\autorun.inf
Deletes itself.
Network activity:
Connects to:
- 'www.ke##ng8.com':80
- 'www.sh##kyc.cn':80
- 'localhost':1037
- 'localhost':1039
TCP:
HTTP GET requests:
- www.ke##ng8.com/cs3.exe
- www.ke##ng8.com/cs4.exe
- www.sh##kyc.cn/tj.asp
- www.ke##ng8.com/cs1.exe
- www.ke##ng8.com/cs2.exe
UDP:
- DNS ASK www.sh##kyc.cn
- DNS ASK www.ke##ng8.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: '' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''