Trojan.Click2.55480

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Default Action' = '%CommonProgramFiles%\LABEL.lnk'

Malicious functions:

Executes the following:

'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\DefaultIcon" /ve /t REG_EXPAND_SZ /d "shdoclc.dll,0" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\DefaultIcon"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}" /v "LocalizedString" /t REG_SZ /d "@shdoclc.dll,-880" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\InProcServer32"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\InProcServer32" /v "ThreadingModel" /t REG_SZ /d "Apartment" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\InProcServer32" /ve /t REG_SZ /d "%systemRoot%\system32\shdocvw.dll" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}" /v "InfoTip" /t REG_SZ /d "@shdoclc.dll,-880" /f
'<SYSTEM32>\attrib.exe' +r -h -s ".\Internet Expl0rer.lnk" "%HOMEPATH%\╫└├ц\Internet Expl0rer.lnk"
'<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v "NoInternetIcon" /t REG_DWORD /d 1 /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\ShellFolder" /v "WantsParsDisplayName" /t REG_SZ /d "" /f
'<SYSTEM32>\attrib.exe' -r "%APPDATA%\Microsoft\Internet Explorer\Quick Launch\Internet Explorer.lnk"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}"
'<SYSTEM32>\reg.exe' ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace\{00000108-0000-0010-8000-00AA006DCCCC}"
'<SYSTEM32>\attrib.exe' +r -h -s "%APPDATA%\Microsoft\Internet Explorer\Quick Launch\Internet Expl0rer.lnk"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell" /ve /t REG_SZ /d "┤Є┐к╓ў╥│(&H)" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\ShellFolder" /v "HideOnDesktopPerUser" /t REG_SZ /d "" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\ShellFolder" /v "HideFolderVerbs" /t REG_SZ /d "" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\ShellFolder" /v "Attributes" /t REG_DWORD /d 0 /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\ShellFolder" /v "WantsParsDisplayName" /t REG_SZ /d "" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Default_Page_URL" /t REG_SZ /d "http://www.92##.net/?ne#" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /t REG_SZ /d "http://www.92##.net/?ne#" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Default Action" /t reg_sz /d "%CommonProgramFiles%\LABEL.lnk" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\ShellFolder"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell\┤Є┐к╓ў╥│(&H)\Command"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell\┤Є┐к╓ў╥│(&H)" /v "MUIVerb" /t REG_SZ /d "@shdoclc.dll,-10241" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell\┤Є┐к╓ў╥│(&H)"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell\┤Є┐к╓ў╥│(&H)\Command" /ve /t REG_SZ /d "%PROGRAM_FILES%\Internet Explorer\iexplore.exe http://www.92##.net/?sy## /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell\╩Ї╨╘(&R)\Command" /ve /t REG_SZ /d "rundll32.exe shell32.dll,Control_RunDLL inetcpl.cpl,,0" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell\╩Ї╨╘(&R)\Command"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DCCCC}\shell\╩Ї╨╘(&R)"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}"
'<SYSTEM32>\attrib.exe' -r "%HOMEPATH%\╫└├ц\Internet.lnk"
'<SYSTEM32>\attrib.exe' -r "%HOMEPATH%\╫└├ц\Internet Explorer.lnk"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}" /v "InfoTip" /t REG_SZ /d "@shdoclc.dll,-880" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\DefaultIcon" /ve /t REG_EXPAND_SZ /d "shdoclc.dll,0" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\DefaultIcon"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}" /v "LocalizedString" /t REG_SZ /d "@shdoclc.dll,-880" /f
'<SYSTEM32>\attrib.exe' -r "%APPDATA%\Microsoft\Internet Explorer\Quick Launch\╞Ї╢п Internet Explorer фп└└╞ў.lnk"
'<SYSTEM32>\attrib.exe' +r +h +s ".\system.cmd"
'%PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE' http://da##34.com/index2.html?51###
'<SYSTEM32>\wscript.exe' "%CommonProgramFiles%\do.vbs"
'<SYSTEM32>\attrib.exe' +r +h +s ".\doit.vbs"
'<SYSTEM32>\attrib.exe' +r "%ALLUSERSPROFILE%\б╕┐к╩╝б╣▓╦╡е\│╠╨Є\╞Ї╢п\LABEL.lnk"
'<SYSTEM32>\attrib.exe' +r "%HOMEPATH%\б╕┐к╩╝б╣▓╦╡е\│╠╨Є\╞Ї╢п\LABEL.lnk"
'<SYSTEM32>\attrib.exe' +r +h +s ".\start.vbs"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\InProcServer32"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell\╩Ї╨╘(&R)\Command" /ve /t REG_SZ /d "rundll32.exe shell32.dll,Control_RunDLL inetcpl.cpl,,0" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell\╩Ї╨╘(&R)\Command"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell\╩Ї╨╘(&R)"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\ShellFolder"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\ShellFolder" /v "HideOnDesktopPerUser" /t REG_SZ /d "" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\ShellFolder" /v "HideFolderVerbs" /t REG_SZ /d "" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\ShellFolder" /v "Attributes" /t REG_DWORD /d 0 /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell\┤Є┐к╓ў╥│(&H)\Command" /ve /t REG_SZ /d "%PROGRAM_FILES%\Internet Explorer\iexplore.exe http://www.92##.net/?sy## /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\InProcServer32" /v "ThreadingModel" /t REG_SZ /d "Apartment" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\InProcServer32" /ve /t REG_SZ /d "%systemRoot%\system32\shdocvw.dll" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell" /ve /t REG_SZ /d "┤Є┐к╓ў╥│(&H)" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell\┤Є┐к╓ў╥│(&H)\Command"
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell\┤Є┐к╓ў╥│(&H)" /v "MUIVerb" /t REG_SZ /d "@shdoclc.dll,-10241" /f
'<SYSTEM32>\reg.exe' ADD "HKEY_CLASSES_ROOT\CLSID\{00000108-0000-0010-8000-00AA006DFFFF}\shell\┤Є┐к╓ў╥│(&H)"

Modifies settings of Windows Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoInternetIcon' = '00000001'

Sets a new unauthorized home page for Windows Internet Explorer.

Modifies file system :

Creates the following files:

%CommonProgramFiles%\LABEL.lnk
%CommonProgramFiles%\system.cmd
%APPDATA%\Microsoft\Internet Explorer\Quick Launch\Internet Expl0rer.lnk
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\index2[1].html
%CommonProgramFiles%\doit.vbs
%CommonProgramFiles%\do.vbs
%CommonProgramFiles%\start.vbs
%CommonProgramFiles%\Internet Expl0rer.lnk

Sets the 'hidden' attribute to the following files:

%CommonProgramFiles%\start.vbs
%CommonProgramFiles%\doit.vbs
%CommonProgramFiles%\system.cmd

Deletes the following files:

%CommonProgramFiles%\do.vbs

Network activity:

Connects to:

'da##34.com':80
'localhost':1037

TCP:

HTTP GET requests:

da##34.com/index2.html?51###

UDP:

DNS ASK da##34.com

Miscellaneous:

Searches for the following windows:

ClassName: 'MS_AutodialMonitor' WindowName: ''
ClassName: 'MS_WebcheckMonitor' WindowName: ''
ClassName: '' WindowName: ''
ClassName: 'EDIT' WindowName: ''
ClassName: 'Shell_TrayWnd' WindowName: ''

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