PERL_EXPLOYT.PLK

This is the detection for exploit codes that takes advantage of a vulnerability in the hosting control panel Plesk.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This malware is a zero-day exploit that affects Plesk systems in Linux operating systems.

It attempts to connect to the target computer by sending out an HTTP POST. Allowing it to execute certain parameters lowers the security of the target machine.

NOTES:

This malware uses the following parameters to execute:

%ScriptFile% [Target IP] [http|https] [Local IP] [Local Port]

The variables mentioned above are:

• [Target IP] - the IP address of the remote machine
• [http|https] - enables or disables SSL connection
• [Local IP] - IP address of the affected computer
• [Local Port] - port where the remote machine connects to

This malware attempts to connect to the target computer by sending out an HTTP POST. Allowing it to execute certain parameters lowers the security of the target machine.

It then sends a PHP script that enables remote shell using the data local IP and local port.