Here's the info from CBL:
IP Address 198.91.81.2
is listed in the CBL. It shows signs of being infected with a spam sending trojan, malicious link or some other form of botnet.
It was last detected at 2015-06-18 17:00 GMT (+/- 30 minutes), approximately 3 hours, 30 minutes ago.
The host at this IP address is infected with the
CryptPHP PHP malware.
CryptoPHP is a threat that uses backdoored Joomla, WordPress andn Drupal themes and plug-ins to compromise webservers on a large scale. More information about this threat can be found on the referenced link below.
This infection almost certainly means that the infected web site has used pirated plugins from the nulledstylez.com, dailynulled.com sites or some other site that specializes in providing "nulled" (pirated) software. Fox-IT's research has shown that every pirated theme or plug-in on these two sites has been infested with the cryptophp malware.
This was detected by a TCP connection from 198.91.81.2 on port 55226 going to IP address 192.42.116.41 (the sinkhole) on port 80.
The botnet command and control domain for this connection was "foltimaks.biz".
Behind a NAT, you should be able to find the infected machine by looking for attempted connections to IP address 192.42.116.41 or host name foltimaks.biz on any port with a network sniffer such as wireshark or by configuring the router to block and log such connections. Equivalently, you can examine your DNS server or proxy server logs to references to 192.42.116.41 or foltimaks.biz. See
Advanced Techniques for more detail on how to use wireshark - ignore the references to port 25/SMTP traffic - the identifying activity is NOT on port 25.
This detection corresponds to a connection at 2015-06-18 16:39:47 (GMT - this timestamp is believed accurate to within one second).
Fox-IT has published
a new blog item on this infection. Fox-IT has written two Python scripts that should be very good at finding these infections: check_url.py and check_filesystems.py. The first script scans a web site to find the infection, the second is used for scanning the web site's filesystem to find the infection. Please go to the above Fox-IT link to obtain these scripts and further instructions.
Fox-IT recommends that you should
NOT try to "repair" the infection. The infected account should be reinstalled from scratch.
I shall repeat the previous paragraph: removing the "social.png" file DOES NOT remove the infection. "social.png" is only just one small piece of it. The infected account should be reinstalled from scratch.
