Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'WinButler' = '%APPDATA%\WinButler\WinButler.exe'
Malicious functions:
Creates and executes the following:
- '%APPDATA%\WinButler\WinButler.exe' /install
- '%APPDATA%\Microsoft\Windows\aeutof.exe'
- '%APPDATA%\WinButler\WinButler.exe' (downloaded from the Internet)
- '%APPDATA%\Microsoft\Windows\aeutof.exe' (downloaded from the Internet)
Modifies file system :
Creates the following files:
- %APPDATA%\WinButler\WinButler.exe
- %TEMP%\WinButler.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\upd[1].php
- %APPDATA%\Microsoft\Windows\aeutof.exe
- %TEMP%\aeutof.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\upd[1].php
- %APPDATA%\WinButler\config.cfg
- %TEMP%\config.cfg
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\upd[1].php
- %APPDATA%\WinButler\WinBuninstaller.exe
- %TEMP%\WinBuninstaller.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\upd[1].php
Deletes the following files:
- %TEMP%\WinButler.exe
- %TEMP%\aeutof.exe
- %TEMP%\config.cfg
- %TEMP%\WinBuninstaller.exe
Network activity:
Connects to:
- 'www.wi###tler.com':80
TCP:
HTTP GET requests:
- www.wi###tler.com/upd.php?wt####################################################################################################
- www.wi###tler.com/upd.php?wt####################################
UDP:
- DNS ASK www.wi###tler.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
