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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