Trojan.StartPage.36997

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Internet Explorer\Extensions\{6096E38F-5AC1-4391-8EC4-75DFA92FB32F}] 'Exec' = 'http://greatwall.com.cn'

Creates the following files on removable media:

<Drive name for removable media>:\╕Ў╚╦╓╪╥к╬─╡╡\═°╓╖╩╒▓╪\│д│╟═°╓╖┤є╚л.url
<Drive name for removable media>:\╕Ў╚╦╓╪╥к╬─╡╡\═°╓╖╩╒▓╪\│д│╟╝╞╦у╗·╝п═┼╣л╦╛.url

Malicious functions:

Executes the following:

<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main" /v "Local Page" /t REG_SZ /d "http://gr####all.com.cn" /f
<SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /t REG_SZ /d "http://www.pc##6.com" /f
<SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Local Page" /t REG_SZ /d "http://gr####all.com.cn" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main" /v "Start Page" /t REG_SZ /d "http://www.pc##6.com" /f
<SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\WorkgroupCrawler\NameSpace\{2559A1F6-21D7-11D4-BDAF-00C04F60B9F0}" /ve /f
<SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\ControlPanel\NameSpace\{2559A1F6-21D7-11D4-BDAF-00C04F60B9F0}" /ve /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main" /v "Default_Page_URL" /t REG_SZ /d "http://www.pc##6.com" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main" /v "Window Title" /t REG_SZ /d "│д│╟╡ч─╘╖■╬ё╚╚╧▀:800-8100285" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{6096E38F-5AC1-4391-8EC4-75DFA92FB32F}" /v "Exec" /t REG_SZ /d "http://gr####all.com.cn" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{6096E38F-5AC1-4391-8EC4-75DFA92FB32F}" /v "HotIcon" /t REG_SZ /d "<SYSTEM32>\greatwall.ico" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{6096E38F-5AC1-4391-8EC4-75DFA92FB32F}" /v "Icon" /t REG_SZ /d "<SYSTEM32>\greatwall.ico" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{6096E38F-5AC1-4391-8EC4-75DFA92FB32F}" /v "ButtonText" /t REG_SZ /d "│д│╟" /f
<SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Window Title" /t REG_SZ /d "│д│╟╡ч─╘╖■╬ё╚╚╧▀:800-8100285" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{6096E38F-5AC1-4391-8EC4-75DFA92FB32F}" /v "CLSID" /t REG_SZ /d "{1FBA04EE-3024-11D2-8F1F-0000F87ABD16}" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{6096E38F-5AC1-4391-8EC4-75DFA92FB32F}" /v "Default Visible" /t REG_SZ /d "Yes" /f
<SYSTEM32>\reg.exe add "HKEY_CLASSES_ROOT\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\oemset" /v "" /t REG_SZ /d "╗╢╙н╩╣╙├│д│╟╡ч─╘" /f
<SYSTEM32>\reg.exe add "HKEY_CLASSES_ROOT\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\oemset\command" /v "" /t REG_SZ /d greatwall.com.cn /f
<SYSTEM32>\reg.exe add "HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}" /v "" /t REG_SZ /d "╗╢╙н╩╣╙├│д│╟╡ч─╘" /f
<SYSTEM32>\reg.exe ADD HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters /v "NV Hostname" /t REG_SZ /d greatwall-PC-72 /f
<SYSTEM32>\reg.exe ADD HKLM\SYSTEM\CurrentControlSet\Control\ComputerName\ActiveComputerName /v "ComputerName" /t REG_SZ /d greatwall-PC-72 /f
<SYSTEM32>\reg.exe ADD HKLM\SYSTEM\CurrentControlSet\Control\ComputerName\ComputerName /v "ComputerName" /t REG_SZ /d greatwall-PC-72 /f
<SYSTEM32>\reg.exe ADD HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters /v "Hostname" /t REG_SZ /d greatwall-PC-72 /f
<SYSTEM32>\reg.exe add "HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\DefaultIcon" /v "" /t REG_SZ /d greatwall.ico /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion" /v "RegisteredOwner" /t REG_SZ /d "│д│╟╡ч─╘" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion" /v "RegisteredOrganization" /t REG_SZ /d "│д│╟╝╞╦у╗·╝п═┼╣л╦╛" /f
<SYSTEM32>\reg.exe add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace\{2559A1F6-21D7-11D4-BDAF-00C04F60B9F0}" /ve /f
<SYSTEM32>\reg.exe add "HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\Instance\InitPropertyBag" /v "Param1" /t REG_SZ /d "http://gr####all.com.cn" /f
<SYSTEM32>\reg.exe add "HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}" /v "InfoTip" /t REG_SZ /d "│д│╟╡ч─╘╓з│╓╨┼╧в" /f
<SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\StartMenu\StartPanel\ShowOEMLink" /v "NoOEMLinkInstalled" /t REG_DWORD /d 0 /f
<SYSTEM32>\reg.exe add "HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\Instance\InitPropertyBag" /v "Command" /t REG_SZ /d "│д│╟╡ч─╘╓з│╓╨┼╧в" /f

Modifies settings of Windows Internet Explorer:

[<HKCU>\Software\Microsoft\Internet Explorer\Main] 'Window Title' = '│д│╟╡ч─╘╖■╬ё╚╚╧▀:800-8100285'
[<HKLM>\SOFTWARE\Microsoft\Internet Explorer\Main] 'Window Title' = '│д│╟╡ч─╘╖■╬ё╚╚╧▀:800-8100285'

Sets a new unauthorized home page for Windows Internet Explorer.

Modifies file system :

Creates the following files:

<SYSTEM32>\greatwall.ico
<SYSTEM32>\oemlogo.bmp
%ALLUSERSPROFILE%\Favorites\│д│╟═°╓╖┤є╚л.url
%ALLUSERSPROFILE%\Favorites\│д│╟╝╞╦у╗·╝п═┼╣л╦╛.url
<SYSTEM32>\oeminfo.ini
<LS_APPDATA>\oeminfo.ini
<LS_APPDATA>\greatwall.ico
%TEMP%\bt4307.bat
<LS_APPDATA>\oemlogo.bmp

Sets the 'hidden' attribute to the following files:

%TEMP%\bt4307.bat

Deletes the following files:

<LS_APPDATA>\oeminfo.ini
<LS_APPDATA>\oemlogo.bmp
%TEMP%\bt4307.bat
<LS_APPDATA>\greatwall.ico

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