Behavior Analysis

The Behavior Analysis component allows you to configure Dr.Web reaction on third-party application actions that are not trusted and may result in infecting your computer, e.g., attempts to modify the HOSTS file or to change the critically important system registry keys. When the Behavior Analysis component is enabled, Dr.Web blocks automatic changing of system objects, if such modification explicitly signifies a malicious attempt to harm the operating system. Behavior analysis protects the system against previously unknown malicious programs that can avoid detection by traditional signature-based and heuristic analyses.

To enable or disable Behavior Analysis

1.Open Dr.Web menu , then select Security Center.

2.In the open window, click Preventive Protection tile.

3.Enable or disable the Behavior Analysis component by using the switcher .

Figure 61. Enabling/Disabling the Behavior Analysis component

In this section:

•Component operation modes

•Creating and editing necessary application rules

•Protected object description

Behavior Analysis parameters

The default settings are optimal for most cases. Do not change them unnecessarily.

To open Behavior Analysis parameters

1.Make sure Dr.Web operates in administrator mode (the lock at the bottom of the program window is open ). Otherwise, click the lock .

2.Click the Behavior Analysis tile. A component parameters window opens.

Figure 62. Behavior Analysis parameters

You can configure a separate protection level for particular objects and processes or set a general level which settings will be applied to all other processes. To set a general protection level, select it from the drop-down list on the Protection level tab.

Protection levels

User mode

All changes are saved in the User mode. In this window, you can also create a new protection level for saving necessary settings. The protected objects will be available for reading at all component settings.

You can choose one of the Dr.Web reactions to application attempts to modify the protected objects:

•Allow—the access to a protected object will be allowed for all the applications.

•Ask—if an application attempts to modify a protected object the notification will be displayed:

Figure 63. Notification example with an access to a protected object request

•Block—if an application attempts to modify a protected object the access will be blocked. Herewith, the notification will be displayed:

Figure 64. Notification example with a blocked access to a protected object

To create a new protection level

1.Look through default settings and, if necessary, edit them.

2.Click the  button.

3.In the open window, enter a name for the new profile.

4.Click OK.

To delete a protection level

1.In the drop-down menu, select a protection level created earlier that you want to delete.

2.Click the  button. Predefined profiles cannot be deleted.

3.To confirm the deletion, click OK.

Receiving notifications

If necessary, you can configure desktop notifications on Behavior Analysis actions.

See also:

•Notifications

Application access

To add custom access parameters for certain applications, go to the Application access tab. On this tab, you can add a new application rule, edit or delete an existing one.

Figure 65. Application access parameters

The following management elements are available to work with objects in the table:

•The  button—adding a rule set for the application.

•The button—editing existing rule sets.

•The  button—deleting a rule set.

In the (Rule type) column you can see three rule types:

•—the Allow all rule is set for all protected objects.

•—different rules are set for protected objects.

•—the Block all is set for all protected objects.

To add an application rule

1.Click .

2.In the open window, click Browse and specify the path to the application executable file.

Figure 66. Adding a rule set for an application

3.Look through default settings and, if necessary, edit them.

4.Click OK.

Protected objects

Other options allow protection of the following registry branches from modification (in the system profile as well as in all the users' profiles).