Please secure and patch your PHP scripts, especially the one that uses xml-rpc protocol. The Linux/Lupper.worm (a variant of BSD/Scalper) might infect your system.
This worm spreads by exploiting specific PHP/CGI script vulnerabilities that could be hosted on the following URLs:
….
# http://[website]/stats/
# http://[website]/xmlrpc.php
# http://[website]/xmlrpc/xmlrpc.php
# http://[website]/xmlsrv/xmlrpc.php
# http://[website]/blog/xmlrpc.php
# http://[website]/drupal/xmlrpc.php
# http://[website]/community/xmlrpc.php
# http://[website]/blogs/xmlrpc.php
# http://[website]/blogs/xmlsrv/xmlrpc.php
# http://[website]/blog/xmlsrv/xmlrpc.php
# http://[website]/blogtest/xmlsrv/xmlrpc.php
# http://[website]/b2/xmlsrv/xmlrpc.php
# http://[website]/b2evo/xmlsrv/xmlrpc.php
# http://[website]/wordpress/xmlrpc.php
# http://[website]/phpgroupware/xmlrpc.php
…
Source : McAfee virus information library



