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Win32.HLLW.Autoruner2.13022
Added to the Dr.Web virus database:
2014-04-26
Virus description added:
2014-04-27
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows-Network Component' = '"<SYSTEM32>\WUDHost.exe"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'firefox' = '"%APPDATA%\firefox.exe"'
Creates the following files on removable media:
<Drive name for removable media>:\document.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:
Creates and executes the following:
'%APPDATA%\audiohd.exe'
'<SYSTEM32>\WUDHost.exe'
'%APPDATA%\firefox.exe'
Executes the following:
'<SYSTEM32>\wscript.exe' "<Current directory>\s4.vbs"
'<SYSTEM32>\regsvr32.exe' /s \MSNMessengerAPI.dll"
'<SYSTEM32>\cmd.exe' /c ""<Current directory>\nt.bat" "
'<SYSTEM32>\cmd.exe' /c ""%APPDATA%nt.bat" "
'<SYSTEM32>\wscript.exe' "%APPDATA%s4.vbs"
Modifies file system :
Creates the following files:
%TEMP%\Temporary Internet Files\Content.IE5\8XKZ4525\desktop.ini
%TEMP%\Temporary Internet Files\Content.IE5\46TU4AKW\desktop.ini
%TEMP%\Temporary Internet Files\Content.IE5\desktop.ini
%TEMP%\History\History.IE5\desktop.ini
%TEMP%\Temporary Internet Files\Content.IE5\4U5MH4H3\desktop.ini
%TEMP%\Temporary Internet Files\Content.IE5\8PQVWH6J\desktop.ini
%APPDATA%\audiohd.exe
<Current directory>\nt.bat
%APPDATA%s4.vbs
%APPDATA%nt.bat
<SYSTEM32>\WUDHost.exe
%APPDATA%\firefox.exe
<Current directory>\s4.vbs
Sets the 'hidden' attribute to the following files:
%TEMP%\Temporary Internet Files\Content.IE5\8XKZ4525\desktop.ini
%TEMP%\Temporary Internet Files\Content.IE5\46TU4AKW\desktop.ini
%TEMP%\Temporary Internet Files\Content.IE5\4U5MH4H3\desktop.ini
%TEMP%\Temporary Internet Files\Content.IE5\8PQVWH6J\desktop.ini
%TEMP%\Temporary Internet Files\Content.IE5\desktop.ini
%APPDATA%\firefox.exe
<Drive name for removable media>:\autorun.inf
%APPDATA%\audiohd.exe
<SYSTEM32>\WUDHost.exe
Network activity:
Connects to:
'rm#.##ainat.ac.th':80
'wp#d':80
TCP:
HTTP GET requests:
HTTP POST requests:
rm#.##ainat.ac.th/rms/pms2007/files//bts/Webpanel//gate.php
UDP:
DNS ASK rm#.##ainat.ac.th
DNS ASK wp#d
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
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