Rootkit:W32/Agent.EA is a kernel-mode rootkit program that is capable of hiding its presence and activity from the user. While active, the rootkit uses the infected computer to sends spam messages.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
Agent.EA arrives as a dropper that installs the main driver of the trojan and deletes itself. Upon execution, it creates the following file:
It installs the driver file as service by creating the following registry key:
The dropper deletes itself with the following batch file:
When the driver file is activated, it might connect to one of the following remote sites in an attempt to retrieve spam messages:
The driver also hides itself, its registry keys, and network traffic using rootkit techniques. The spamming routine is also implemented entirely in the kernel-mode component (windbg48.sys).