Banker.EEM is a Trojan, which although seemingly inoffensive, can actually carry out attacks and intrusions. It captures certain information entered or saved by the user, with the corresponding threat to privacy:
keystrokes, in order to obtain information for accessing online banking services, passwords and other confidential information. It sends the gathered information to a remote user by any available means: email, FTP, etc. - In the local network:
it generates a large amount of network activity and consumes bandwidth.
It reduces the security level of the computer:
it notifies the attacker that the computer has been compromised and is ready to be used maliciously. Banker.EEM redirects attempts to access web pages of certain banks to spoofed pages, with the aim of logging information entered by the user in these pages. It uses stealth techniques to avoid being detected by the user: - It uses techniques included in its code to hide itself while it is active.
- It modifies system permissions in order to hide itself.
Banker.EEM uses the following propagation or distribution methods: - Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
- Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.
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