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Avast Scan Instructions


Step 1. Click to activate the following screen:

Figure 1: The SUMMARY tab displaying the Current Status SECURED pane

The following list briefly describes the functions of the four tabs as follows:

SUMMARY: This tab features the Current Status and Statistics sub-tabs. The Current Status sub-tab displays the working status of key avast! components used to defend your computer from malware and virus attacks. The STATISTICS pane displays the operational behaviour of each avast! component over the period of a week, a month or a year.

SCAN COMPUTER: This tab features the Scan Now, Boot-time Scan and Scan Logs sub-tabs. The SCAN NOW pane lists different options for performing manual scans. The BOOT-TIME SCAN pane lets you perform a boot-time scan the next time your computer starts up, and the SCAN LOGS display a record of the different manual scans performed in table format.

REAL-TIME SHIELDS: This tab features all the monitors or 'shields' protecting different aspects of computer functions, beginning with the FILE SYSTEM SHIELD. It provides access to the real-time shield settings, including stopping and starting them.

MAINTENANCE: This tab features the Update, Registration, Virus Chest and About avast! sub-tabs. The UPDATE pane lets you manually update the program and virus definitions and the REGISTRATION pane lets you register your copy of avast!. The VIRUS CHEST lets you view the different malware or viruses that avast! detected during a scan, and lets you deal with them in different ways, including deleting them, scanning them further or submitting them to a virus laboratory. The ABOUT AVAST! pane displays information about the latest version of avast! on your computer.

Note: The SCAN COMPUTER and MAINTENANCE panes are particularly useful when dealing with malware and viruses.

4.3 How to Scan for Malware and Viruses

In this section, you will learn about the available scan options, and how to use them. You will also learn how to perform a full system scan and a folder scan, as well as a boot-time scan.

The SCAN COMPUTER > SCAN NOW pane displays the four scan options available in avast!; to view them, perform this step:

Step 1. Click to activate the following screen:

Figure 2: The SCAN COMPUTER tab displaying the SCAN NOW pane

The following brief descriptions will help you to choose the appropriate scan option:

Quick scan: This option is recommended for users with a limited amount of time in which to scan for a potential or suspected threat.

Full system scan: This option is recommended when users have sufficient time to schedule a thorough scan of your system. It is also recommended if this is the first time you are using an anti-virus software on your computer. The duration of this scan depends on the number of documents, files, folders and hard drives on your computer, and the computer speed. Please refer to section 4.4 How to Perform a Full system scan.

Removable media scan: This option is recommended for scanning external hard drives, USB flash drives, and other media, particularly those which are not your own. It will scan any removable device for malicious programs that automatically run whenever the device is connected.

Select folder to scan: This option is recommended for scanning either a specific folder or multiple folders, especially if you know or suspect, that a particular file or folder might be infected. Please refer to section 4.5 How to Perform a Folder scan.

Tip: Each scan option lets you see the details of your scan, for instance, the areas being scanned. Click to review them. If you are knowledgeable or possess advanced or expert level computer skills, click to refine your virus scan parameters for each scan option.

4.4 How to Perform a Full System scan

To perform a full system scan, follow these steps:

Step 1. Click on the Full system scan option to activate the following screen:

Figure 3: The SCAN NOW pane displaying Full system scan/scan running...

After the full system scan has been completed, and if a threat to your computer has been found, the Full system scan pane may resemble the following screen:

Figure 4: The Scan complete item displaying the THREAT DETECTED! warning

The full system scan has revealed a couple of threats; to learn what to do with them, please refer to section 4.7 How to Deal with Viruses.

The avast! Virus Chest is simply a folder established during the avast! installation process, an electronic 'dead zone' or 'quarantine' where malware or viruses are prevented from interacting with or running on any of your computer processes.

4.5 How to Perform a Folder Scan

To scan your folders, perform the following steps:

Step 1. Click in the Select folder to scan option to activate the following screen:

Figure 5: The Select the areas dialog box

The Select the areas dialog box lets you specify the folder you would like to scan. You can select more than one folder for scanning purposes. As you check the boxes besides each folder, the folder path is displayed in the Selected paths: text field.

Step 2. Click to begin scanning your folders, and activate the following screen:

Figure 6: The Folder scan in progress.

Tip: avast! lets you scan individual folders though a standard Windows pop-up menu that appears whenever you right click on a folder. Simply Select which appears next to the name of the folder you would like to begin scanning for viruses.

4.6 How to Perform a Boot-time Scan

The avast! boot-time scan lets you perform a full scan of your hard drive before the Microsoft Windows Operating System starts running. At the moment the boot-time scan is performed, the majority of malware programs and viruses are still dormant, that is, they have not had the opportunity to activate themselves, or interact with other system processes yet. As such, they are usually quite easily exposed and removed.

The boot-time scan also directly accesses the disk, and bypasses the drivers for the Windows file system, a favourite target of most computer threats. This will display even the most persistent 'rootkits' - the name for a particularly malignant form of malware. It is strongly recommended that you run a boot-time scan even if there is only a remote suspicion that your computer system may be compromised or infected.

The Boot-time Scan option is recommended for a complete and thorough scan of your computer system. It may require some time, depending on your computer speed and the amount of data and number of hard drives you may have. The Boot-time Scan is always scheduled for the next time you start your computer.

To scan your system at boot time, perform the following steps:

Step 1. Click to activate the BOOT-TIME SCAN pane.

Step 2. Click to schedule a boot-time scan the next time you start your computer.

Step 3. Click to start the boot-time scan immediately, if you prefer.

Note: A boot-time scan starts before the operating system and interface are loaded; as such, only a blue screen appears, displaying the progress of the scan as follows:

Figure 7: The avast! Boot-time scheduled scan

avast! will prompt you for a response every time a virus is detected, and to Delete, Ignore, Move or Repair any or all identified viruses, but it is recommended that you do not ignore them under any circumstances. A list of these commands only appears if a virus is detected on your system.

4.7 How to Deal with Viruses

During the avast! installation process, the avast! Virus Chest was created on your hard drive. The Virus Chest is simply a folder isolated from the rest of your computer system, and used to store malware and viruses detected during the scan, as well as infected or threatened documents, files or folders.

If you have already updated your program upgrade and virus definitions, you will be familiar with the MAINTENANCE tab - which is also how you access the avast! Virus Chest.

To begin dealing with any malware or viruses detected during a scan, perform the following steps:

Step 1. Click to activate the following screen:

Figure 8: The SCAN RESULTS window displaying THREAT DETECTED! warning

Step 2. Click to display the drop-down list of possible actions to be applied to the detected threats as shown in Figure 8 above.

Note: In this exercise, we are concerned with moving infected files to the Virus Chest. However, the drop-down list displays three other options and they are described below:

Repair: This action will attempt to repair the infected file.

Delete: This action will delete - permanently - the infected file.

Do nothing: This action means exactly what it says, and is definitely not recommended for treating potentially harmful malware or virus threats.

Step 3. Select the Move to Chest item, and then click to activate the following screen:

Figure 9: The viruses have been moved to the Virus Chest successfully

4.8 How to Use the Virus Chest

You are now free to decide how to deal with the virus once it has been safely moved to the avast! Virus Chest.

Step 1. Click and click to activate the following screen:

Figure 10: The Virus Chest displaying two viruses

Step 2: Right click either virus to display the menu of actions that can be applied to a selected virus as follows:

Figure 11: The pop-up menu of actions for viruses in the Virus Chest

Note: Double clicking a virus in the Virus Chest will not activate or run it. It will only display the virus properties, or basically the same information you would obtain by selecting Properties from the pop-up menu.

The following list describes the actions used to deal with viruses in the pop-up menu as follows:

Delete: This item will delete the virus irreversibly.

Restore: This item will restore the virus to its original location.

Extract: This item will copy the file or virus to a folder you have specified.

Scan: This item will resubmit the virus to another scan.

Submit to virus lab...: This item will let you submit a virus for further analysis against a database of known viruses. Selecting this item will activate a virus submission form for you to fill out and submit.

Properties: This item will reveal more details about the virus selected.

Add...: This item lets you browse your system for other files you would like to add to the Virus Chest. This is potentially very useful if you have files you would like to protect during a virus outbreak.

Refresh all files: This item will update your files, so that you will be able to view the latest files.

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Article ID: 8
Category: Knowledgebase
Date added: 14-Jun-2013 9:21pm
Views: 2648
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