Windows XP/2000/NT/ME/98/95

Codebase.BL is a hacking tool. These are programs designed to enable malicious users to cause or facilitate action detrimental to the target computer.

However, under certain circumstances (for example with network administrators), they could be used to check the security status, possible attack channels (in order to minimize risks), etc.

These tools, even though they are not by nature viruses, are considered as dangerous to victims of attacks.

It reduces the security level of the computer: it changes the security settings of Internet Explorer, decreasing its security level.

Codebase.BL 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.