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User Guide
COPYRIGHT
Copyright © 2004 Networks Associates Technology, Inc. All Rights Reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means without the written permission of Networks Associates Technology, Inc., or its suppliers or affiliate companies. To obtain this permission, write to the attention of the McAfee legal department at: 5000 Headquarters Drive, Plano, Texas 75024, or call +1-972-963-8000.
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ORCHESTRATOR, FIRST AID, FORCEFIELD, GMT, GROUPSHIELD, GROUPSHIELD (AND IN KATAKANA), GUARD DOG, HOMEGUARD, HUNTER,
INTRUSHIELD, INTRUSION PREVENTION THROUGH INNOVATION, M AND DESIGN, MCAFEE, MCAFEE (AND IN KATAKANA), MCAFEE AND DESIGN,
MCAFEE.COM, MCAFEE VIRUSSCAN, NA NETWORK ASSOCIATES, NET TOOLS, NET TOOLS (AND IN KATAKANA), NETCRYPTO, NETOCTOPUS,
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NETWORK, YOUR E-BUSINESS DEFENDER, YOUR NETWORK. OUR BUSINESS. are registered trademarks or trademarks of McAfee, Inc. and/or its affiliates in the US and/or other countries. Red in connection with security is distinctive of McAfee brand products. All other registered and unregistered trademarks herein are the sole property of their respective owners.
LICENSE INFORMATION
License Agreement
NOTICE TO ALL USERS: CAREFULLY READ THE APPROPRIATE LEGAL AGREEMENT CORRESPONDING TO THE LICENSE YOU PURCHASED, WHICH
SETS FORTH THE GENERAL TERMS AND CONDITIONS FOR THE USE OF THE LICENSED SOFTWARE. IF YOU DO NOT KNOW WHICH TYPE OF LICENSE
YOU HAVE ACQUIRED, PLEASE CONSULT THE SALES AND OTHER RELATED LICENSE GRANT OR PURCHASE ORDER DOCUMENTS THAT
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Attributions
This product includes or may include:
Software developed by the OpenSSL Project for use in the OpenSSL Toolkit ( http://www.openssl.org/ ).
Cryptographic software written by Eric A. Young and software written by Tim J. Hudson.
Some software programs that are licensed (or sublicensed) to the user under the GNU General Public License (GPL) or other similar Free Software licenses which, among other rights, permit the user to copy, modify and redistribute certain programs, or portions thereof, and have access to the source code. The GPL requires that for any software covered under the GPL which is distributed to someone in an executable binary format, that the source code also be made available to those users. For any such software covered under the GPL, the source code is made available on this CD. If any Free Software licenses require that McAfee, Inc. provide rights to use, copy or modify a software program that are broader than the rights granted in this agreement, then such rights shall take precedence over the rights and restrictions herein.
Software originally written by Henry Spencer, Copyright 1992, 1993, 1994, 1997 Henry Spencer.
Software originally written by Robert Nordier, Copyright © 1996-7 Robert Nordier.
Software written by Douglas W. Sauder.
Software developed by the
Apache Software Foundation ( http://www.apache.org/ ). A copy of the license agreement for this software can be found at www.apache.org/licenses/LICENSE-
2.0.txt
.
International Components for Unicode (“ICU”) Copyright © 1995-2002 International Business Machines Corporation and others.
by CrystalClear Software, Inc., Copyright © 2000 CrystalClear Software, Inc.
Outside In
®
FEAD
Viewer Technology © 1992-2001 Stellent Chicago, Inc. and/or Outside In
®
®
Optimizer
®
technology, Copyright Netopsystems AG, Berlin, Germany.
HTML Export, © 2001 Stellent Chicago, Inc.
Software developed
Software copyrighted by
Thai Open Source Software Center Ltd. and Clark Cooper, © 1998, 1999, 2000.
Software copyrighted by Expat maintainers.
Software copyrighted by The
Software copyrighted by Sun Microsystems
®
, Inc.© 2003.
Software Regents of the University of California, © 1989. copyrighted by Gisle Aas. © 1995-2003.
Software copyrighted by Gunnar Ritter.
Software copyrighted by Michael A. Chase, © 1999-2000.
Software copyrighted by Neil Winton, © 1995-1996.
Software copyrighted by RSA Data Security, Inc., © 1990-1992.
Software copyrighted by Sean M. Burke, © 1999, 2000.
Software copyrighted by Martijn
Koster, © 1995.
Software copyrighted by Brad Appleton, © 1996-1999. Software copyrighted by Michael G. Schwern, © 2001.
Software copyrighted by
Graham Barr, © 1998.
Software copyrighted by Larry Wall and Clark Cooper, © 1998-2000.
Software copyrighted by Frodo Looijaard, © 1997.
Software copyrighted by the Python Software Foundation, Copyright © 2001, 2002, 2003. A copy of the license agreement for this software can be found at www.python.org
.
Software copyrighted by Beman Dawes, © 1994-1999, 2002.
Software written by Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek © 1997-2000 University of
Notre Dame.
Software copyrighted by Simone Bordet & Marco Cravero, © 2002.
Software copyrighted by Stephen Purcell, © 2001.
Software developed by the Indiana University Extreme! Lab ( http://www.extreme.indiana.edu/ ).
Software copyrighted by International Business Machines Corporation and others,
Software developed by the University of California, Berkeley and its contributors.
© 1995-2003.
Software developed by Ralf S. Engelschall
<[email protected]> for use in the mod_ssl project ( http://www.modssl.org/ ).
Software copyrighted by Kevlin Henney, © 2000-2002.
Software copyrighted by Peter Dimov and Multi Media Ltd. © 2001, 2002.
Software copyrighted by David Abrahams, © 2001, 2002. See http://www.boost.org/libs/bind/ bind.html
for documentation.
Software copyrighted by Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock, © 2000.
Software copyrighted by Nicolai M. Josuttis, © 1999.
Software copyrighted by Jeremy Siek, © 1999-2001.
Software copyrighted by
Boost.org, © 1999-2002.
Software copyrighted by Daryle Walker, © 2001.
Software copyrighted by Chuck Allison and Jeremy Siek, © 2001, 2002.
Software copyrighted by Samuel Krempp, © 2001. See http://www.boost.org
for updates, documentation, and revision history.
Software copyrighted by Doug Gregor ([email protected]), © 2001, 2002.
Software copyrighted by Cadenza New Zealand Ltd., © 2000.
([email protected]), © 1999, 2000.
Software copyrighted by Jens Maurer, © 2000, 2001.
Software copyrighted by Ronald Garcia, © 2002.
Software copyrighted by Jaakko Järvi
Software copyrighted by David Abrahams, Jeremy Siek, and Daryle
Walker, © 1999-2001.
Software copyrighted by Stephen Cleary ([email protected]), © 2000.
Software copyrighted by Housemarque Oy < http:// www.housemarque.com
>, © 2001.
Software copyrighted by Paul Moore, © 1999.
Software copyrighted by Dr. John Maddock, © 1998-2002.
Software copyrighted by Greg Colvin and Beman Dawes, © 1998, 1999.
Software copyrighted by Peter Dimov, © 2001, 2002.
Software copyrighted by Jeremy Siek and
John R. Bandela, © 2001.
Software copyrighted by Joerg Walter and Mathias Koch, © 2000-2002.
Issued July 2004 / McAfee
®
VirusScan
®
Home Edition software
Quick Start Card
If you are installing your product from a CD or the web site, print this convenient reference page.
Are you installing your product from a CD?
Are you installing your product from a web site?
Yes
No
1. Insert your product CD into your
CD-ROM drive. If the installation does not start automatically, click Start on your Windows desktop, then click Run .
Yes
2. In the Run dialog box, type
D:\SETUP.EXE (where D is the letter of your CD-ROM drive).
3. Click OK .
1. Go to the McAfee web site, and click
My Account .
2. If prompted, enter your subscribing e-mail address and password, then click Log In to open your Account Info page.
3. Locate your product in the list, and click the download icon.
McAfee reserves the right to change Upgrade & Support Plans and policies at any time without notice. McAfee and
VirusScan are registered trademarks of McAfee, Inc. and/or its affiliates in the US and/or other countries.
© 2004 Networks Associates Technology, Inc. All rights reserved.
User Guide iii
Quick Start Card
For more information
To view the User Guides on the product CD, make sure you have Acrobat Reader installed; if not, install it now from the McAfee product CD.
1
2
3
Insert your product CD into your CD-ROM drive.
Open Windows Explorer: Click Start on your Windows desktop, and click Search .
Locate the Manuals folder, and double-click the User Guide .
PDF you want to open.
Registration benefits
We recommend that you follow the easy steps within your product to transmit your registration directly to us. Registration ensures that you receive timely and knowledgeable technical assistance, plus the following benefits:
FREE electronic support
Virus definition (.
DAT ) file updates for one year after installation when you purchase
VirusScan software
Go to http://www.mcafee.com/ for pricing of an additional year of virus signatures.
60-day warranty that guarantees replacement of your software CD if it is defective or damaged
SpamKiller filter updates for one year after installation when you purchase SpamKiller software
Go to http://www.mcafee.com/ for pricing of an additional year of filter updates.
McAfee Internet Security Suite updates for one year after installation when you purchase MIS software
Go to http://www.mcafee.com/ for pricing of an additional year of content updates.
Technical Support
For technical support, please visit
http://www.mcafeehelp.com/.
Our support site offers 24-hour access to the easy-to-use Answer Wizard for solutions to the most common support questions.
Knowledgeable users can also try our advanced options, which include a Keyword Search and our
Help Tree. If a solution cannot be found, you can also access our FREE Chat Now! and E-mail
Express! options. Chat and e-mail help you to quickly reach our qualified support engineers through the Internet, at no cost. Otherwise, you can get phone support information at
http://www.mcafeehelp.com/.
iv McAfee
®
VirusScan
®
Home Edition software
Contents
Quick Start Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Using McAfee VirusScan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Manually scanning for viruses and potentially unwanted programs . . . . . . . . . . . . . . 25
Automatically scanning for viruses and potentially unwanted programs . . . . . . . . . . 28
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
User Guide v
Contents vi McAfee
®
VirusScan
®
Home Edition software
Getting Started
1
Welcome to McAfee VirusScan.
McAfee VirusScan is an anti-virus subscription service offering comprehensive, reliable, and up-to-date virus protection. Powered by award-winning McAfee scanning technology, VirusScan protects against viruses, worms, Trojan horses, malicious scripts, and hybrid attacks.
With it, you get the following features:
ActiveShield — Scan files when they are accessed by either you or your computer.
Scan — Search for viruses and potentially unwanted programs in hard drives, floppy disks, and individual files and folders.
Quarantine — Encrypt and temporarily isolate infected and suspicious files in the quarantine folder until an appropriate action can be taken.
Hostile activity detection — Monitor your computer for virus-like activity caused by malicious scripts and worm-like activity.
New features
This version of VirusScan provides the following new features:
Scanning for potentially unwanted programs
VirusScan can scan for potentially unwanted programs (including spyware, adware, and dialers) during manual scanning, outbound e-mail scanning, instant messaging (IM), via the Windows Explorer shortcut menu, and via the
Microsoft Outlook toolbar icon.
Scanning of large outbound attachments
To address increased use of broad-band Internet connections and service providers increasing e-mail storage and transmission sizes, VirusScan is now optimized to scan large e-mail attachments without interfering with e-mail program timeout values.
E-mail scanning
VirusScan automatically scans inbound (POP3) and outbound (SMTP) e-mail and e-mail attachments for most popular e-mail clients, including Microsoft
Outlook, Netscape Mail, Eudora, and Pegasus.
User Guide 7
Getting Started
Instant messenger scanning
VirusScan automatically scans inbound file transfers for most popular instant messaging clients, including Yahoo Messenger, AOL Instant Messenger, and
MSN Messenger.
Hostile activity detection
VirusScan provides ScriptStopper
TM
and WormStopper
TM
to detect, alert, and block virus-like activity caused by malicious scripts and worm-like activity.
Automatic file infection cleaning
VirusScan automatically attempts to clean infected or suspicious files as soon as they are detected.
Scheduled scanning
You can now schedule automatic scanning at specified intervals to thoroughly check your computer for viruses.
File quarantine
You can use the Quarantine feature to encrypt and temporarily isolate infected and suspicious files in the quarantine folder until an appropriate action can be taken. Once cleaned, a quarantined file can then be restored to its original location.
Submit files to AVERT
VirusScan now includes the ability to submit suspicious files directly from the
Quarantine feature to the McAfee AntiVirus Emergency Response Team
(AVERT
TM
) for research.
Virus Map reporting
You can now anonymously send virus tracking information for inclusion in our World Virus Map. You can automatically register for this free, secure feature and view the latest worldwide infection rates via the McAfee
SecurityCenter.
System requirements
Microsoft
®
Windows 98, Windows Me, Windows 2000, or Windows XP
Personal computer with Pentium 133 MHz or higher processor
32 MB of RAM
35 MB of free hard disk space (for installation)
Microsoft
®
Internet Explorer 5.5 or later
NOTE
To upgrade to the latest version of Internet Explorer, visit the
Microsoft web site at http://www.microsoft.com/ .
8 McAfee
®
VirusScan
®
Home Edition software
Testing VirusScan
Testing VirusScan
Before initial use of VirusScan, it’s a good idea to test your installation. Use the following steps to separately test the ActiveShield and Scan features.
Testing ActiveShield
To test ActiveShield:
1
2
3
4
Go to http://www.eicar.com/ in your web browser.
Click the The AntiVirus testfile eicar.com
link.
Scroll to the bottom of the page. Under Download , you will see four links.
Click eicar.com
.
If ActiveShield is working properly, it detects the eicar.com file immediately after you click the link. You can try to delete or quarantine infected files to see how
ActiveShield handles viruses. See
If ActiveShield finds a virus on page 22 for details.
Testing Scan
Before you can test Scan, you must disable ActiveShield to prevent it from detecting the infected files before Scan does, then download the test files.
To download the test files:
1
2
Disable ActiveShield: Right-click the McAfee icon, point to VirusScan , then click Disable .
Download the EICAR test files from the EICAR web site: a Go to http://www.eicar.com/ .
b c
Click the The AntiVirus testfile eicar.com
link.
Scroll to the bottom of the page. Under Download , you will see these links: eicar.com
contains a line of text that VirusScan will detect as a virus.
eicar.com.txt
(optional) is the same file, but with a different file name, for those users who have difficulty downloading the first link. Simply rename the file “eicar.com” after you download it.
eicar_com.zip
WinZip
™
is a copy of the test virus inside a .
ZIP compressed file (a
file archive).
eicarcom2.zip
is a copy of the test virus inside a .
ZIP compressed file, which itself is inside a .
ZIP compressed file.
User Guide 9
Getting Started
3 d e
Click each link to download its file. For each one, a File Download dialog box appears.
Click Save , click the Create New Folder button, then rename the folder VSO
Scan Folder .
f Double-click VSO Scan Folder , then click Save again in each Save As dialog box.
When you are finished downloading the files, close Internet Explorer.
4
2
Enable ActiveShield: Right-click the McAfee icon, point to VirusScan , then click Enable .
To test Scan:
1 Right-click the McAfee icon, point to VirusScan , then click Scan for Viruses .
Using the directory tree in the left pane of the dialog box, go to the VSO Scan
Folder where you saved the files:
3
4 a b
Click the + sign next to the C drive icon.
Click the VSO Scan Folder to highlight it (do not click the + sign next to it).
This tells Scan to check only that folder for viruses. You can also put the files in random locations on your hard drive for a more convincing demonstration of Scan’s abilities.
In the Scan Options area of the Scan for Viruses dialog box, ensure that all options are selected.
Click Scan on the lower right of the dialog box.
VirusScan scans the VSO Scan Folder . The EICAR test files that you saved to that folder appear in the List of Detected Files . If so, Scan is working properly.
You can try to delete or quarantine infected files to see how Scan handles viruses.
See
If Scan finds a virus or potentially unwanted program on page 30
for details.
10 McAfee
®
VirusScan
®
Home Edition software
Using McAfee SecurityCenter
Using McAfee SecurityCenter
McAfee SecurityCenter is your one-stop security shop, accessible from its icon in your Windows system tray or from your Windows desktop. With it, you can perform these useful tasks:
Get free security analysis for your computer.
Launch, manage, and configure all your McAfee subscriptions from one icon.
See continuously updated virus alerts and the latest product information.
Receive free trial subscriptions to download and install trial versions directly from McAfee using our patented software delivery process.
Get quick links to frequently asked questions and account details at the
McAfee web site.
NOTE
For more information about its features, click Help in the
SecurityCenter dialog box.
While SecurityCenter is running and all of the McAfee features installed on your computer are enabled, a red M icon appears in the Windows system tray. This area is usually in the lower-right corner of the Windows desktop and contains the clock.
If one or more of the McAfee applications installed on your computer are disabled, the McAfee icon changes to black .
To open the McAfee SecurityCenter:
1
2
2
Right-click the McAfee icon .
Click Open SecurityCenter .
To access a VirusScan feature:
1 Right-click the McAfee icon .
Point to VirusScan , then click the feature you want to use.
User Guide 11
Getting Started
12 McAfee
®
VirusScan
®
Home Edition software
Using McAfee VirusScan
2
Using ActiveShield
When ActiveShield is started (loaded into computer memory) and enabled, it is constantly protecting your computer. ActiveShield scans files when they are accessed by either you or your computer. When ActiveShield detects an infected file, it automatically tries to clean the virus. If ActiveShield cannot clean the virus, you can quarantine or delete the file.
Enabling or disabling ActiveShield
ActiveShield is started (loaded into computer memory) and enabled (denoted by the red icon in your Windows system tray) by default as soon as you restart your computer after the installation process.
If ActiveShield is stopped (not loaded) or is disabled (denoted by the black icon), you can manually run it, as well as configure it to start automatically when
Windows starts.
Enabling ActiveShield
To enable ActiveShield for this Windows session only:
Right-click the McAfee icon, point to VirusScan , then click Enable . The McAfee icon changes to red .
If ActiveShield is still configured to start when Windows starts, a message tells you that you are now protected from viruses. Otherwise, a dialog box appears that lets you configure ActiveShield to start when Windows starts (
User Guide 13
Using McAfee VirusScan
Disabling ActiveShield
To disable ActiveShield for this Windows session only:
1
2
Right-click the McAfee icon, point to VirusScan , then click Disable .
Click Yes to confirm.
The McAfee icon changes to black .
If ActiveShield is still configured to start when Windows starts, your computer will be protected from viruses again when you restart your computer.
Configuring ActiveShield options
You can modify ActiveShield starting and scanning options in the ActiveShield tab of the VirusScan Options dialog box (
Figure 2-1 ), which is accessible via the
McAfee icon in your Windows system tray.
Figure 2-1. ActiveShield Options
Starting ActiveShield
ActiveShield is started (loaded into computer memory) and enabled (denoted by red ) by default as soon as you restart your computer after the installation process.
If ActiveShield is stopped (denoted by black ), you can configure it to start automatically when Windows starts (recommended).
14 McAfee
®
VirusScan
®
Home Edition software
Using ActiveShield
NOTE
During updates to VirusScan, the Update Wizard might exit
ActiveShield temporarily to install new files. When the Update
Wizard prompts you to click Finish , ActiveShield starts again.
To start ActiveShield automatically when Windows starts:
1 Right-click the McAfee icon, point to VirusScan , then click Options .
2
3
The VirusScan Options dialog box opens (
Select the Start ActiveShield when Windows starts (recommended) checkbox, then click Apply to save your changes.
Click OK to confirm, then click OK .
Stopping ActiveShield
WARNING
If you stop ActiveShield, your computer is not protected from viruses. If you must stop ActiveShield, other than for updating VirusScan, ensure that you are not connected to the
Internet.
To stop ActiveShield from starting when Windows starts:
1 Right-click the McAfee icon, point to VirusScan , then click Options .
2
3
The VirusScan Options dialog box opens (
Deselect the Start ActiveShield when Windows starts (recommended) checkbox, then click Apply to save your changes.
Click OK to confirm, then click OK .
Scanning e-mail and attachments
By default, e-mail scanning and automatic cleaning are enabled via the Scan e-mail and attachments
option ( Figure 2-1 on page 14 ) and the
Automatically clean infected attachments (recommended) option (
When these two options are enabled, ActiveShield automatically scans and attempts to clean inbound (POP3) and outbound (SMTP) infected e-mail messages and attachments for most popular e-mail clients, including the following:
Microsoft Outlook Express 4.0 or later
Microsoft Outlook 97 or later
Netscape Messenger 4.0 or later
Netscape Mail 6.0 or later
Eudora Light 3.0 or later
User Guide 15
Using McAfee VirusScan
Eudora Pro 4.0 or later
Eudora 5.0 or later
Pegasus 4.0 or later
NOTE
E-mail scanning is not supported for these e-mail clients:
Web-based, IMAP, AOL, POP3 SSL, and Lotus Notes.
However, ActiveShield scans e-mail attachments when they are opened.
If you disable the Scan e-mail and attachments option, the
E-mail Scan options (
Figure 2-2 on page 17 ) and the
WormStopper options (
automatically disabled. If you disable outbound e-mail scanning, the WormStopper options are automatically disabled.
If you change your e-mail scanning options, you must restart your e-mail program to complete the changes.
Inbound e-mail
If an inbound e-mail message or attachment is infected, ActiveShield performs the following steps:
Tries to clean the infected e-mail
Tries to quarantine or delete an uncleanable e-mail
Includes an alert file in the inbound e-mail that contains information about the actions performed to remove the infection
Outbound e-mail
If an outbound e-mail message or attachment is infected, ActiveShield performs the following steps:
Tries to clean the infected e-mail
Tries to quarantine or delete an uncleanable e-mail
Sends an alert file to you in a new e-mail that contains information about the actions performed to remove the infection
NOTE
For details about outbound e-mail scanning errors, see the online help.
16 McAfee
®
VirusScan
®
Home Edition software
Using ActiveShield
By default, ActiveShield scans both inbound and outbound e-mail. However, for enhanced control, you can set ActiveShield to scan only inbound or outbound e-mail.
To disable scanning of inbound or outbound e-mail:
1 Right-click the McAfee icon, point to VirusScan , and then click Options .
2
3
Click Advanced , then click the E-mail Scan
Deselect Inbound e-mail messages or Outbound e-mail messages , then click OK .
If your e-mail server is set to only send and receive e-mail while you are at your computer, you can choose to have alerts prompt you to clean infected e-mail by disabling auto-cleaning. Follow the steps below to disable auto-cleaning, then see
Managing infected e-mail on page 23 for details about responding to alerts.
Figure 2-2. E-mail Scan Options
To disable auto-cleaning of infected e-mail:
1
2
3
Right-click the McAfee icon, point to VirusScan , and then click Options .
Click Advanced , then click the E-mail Scan
Click Prompt me when an attachment must be cleaned , then click OK .
User Guide 17
Using McAfee VirusScan
Scanning inbound instant message attachments
By default, scanning of instant message attachments is enabled via the Scan inbound instant message attachments
option ( Figure 2-1 on page 14
).
When this option is enabled, VirusScan automatically scans and attempts to clean inbound infected instant message attachments for most popular instant messaging clients, including the following:
MSN Messenger 6.0 or later
Yahoo Messenger 4.1 or later
AOL Instant Messenger 2.1 or later
NOTE
For your protection, you cannot disable auto-cleaning of instant message attachments.
If an inbound instant message attachment is infected, VirusScan performs the following steps:
Tries to clean the infected message
Prompts you to quarantine or delete an uncleanable message
Scanning all files
If you set ActiveShield to use the default All files (recommended) option, it scans every file type that your computer uses, as your computer attempts to use it. Use this option to get the most thorough scan possible.
To set ActiveShield to scan all file types:
1
2
3
Right-click the McAfee icon, point to VirusScan , and then click Options .
Click Advanced , then click the ActiveShield tab (
Click All files (recommended) , then click OK .
18 McAfee
®
VirusScan
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Home Edition software
Using ActiveShield
Figure 2-3. Advanced ActiveShield Options
Scanning program files and documents only
If you set ActiveShield to use the Program files and documents only option, it scans program files and documents, but not any other files used by your computer. The latest virus signature file ( DAT file) determines which file types that ActiveShield will scan.To set ActiveShield to scan program files and documents only:
1
2
3
Right-click the McAfee icon, point to VirusScan , and then click Options .
Click Advanced , then click the ActiveShield tab (
).
Click Program files and documents only , then click OK .
Scanning for new unknown viruses
If you set ActiveShield to use the default Scan for new unknown viruses
(recommended) option, it uses advanced heuristic techniques that try to match files to the signatures of known viruses, while also looking for telltale signs of unidentified viruses in the files.
To set ActiveShield to scan for new unknown viruses:
1
2
3
Right-click the McAfee icon, point to VirusScan , and then click Options .
Click Advanced , then click the ActiveShield tab (
).
Click Scan for new unknown viruses (recommended) , then click OK .
User Guide 19
Using McAfee VirusScan
Scanning for scripts and worms
VirusScan monitors your computer for suspicious activity that might indicate a threat is present on your computer. While VirusScan cleans viruses,
ScriptStopper
TM
and WormStopper
TM
prevent viruses, worms, and Trojans from spreading further.
The ScriptStopper and WormStopper protection mechanisms detect, alert, and block malicious activity. Suspicious activity might include the following actions on your computer:
A script execution that results in the creation, copying, or deletion of files, or the opening of your Windows registry
An attempt to forward e-mail to a large portion of your address book
Attempts to forward multiple e-mail messages in rapid succession
If you set ActiveShield to use the default Enable ScriptStopper (recommended) and
Enable WormStopper (recommended) options in the Advanced Options dialog box,
ScriptStopper and WormStopper monitor script execution and e-mail activity for suspicious patterns and alerts you when a specified number of e-mails or recipients has been exceeded within a specified interval.
To set ActiveShield to scan for malicious scripts and worm-like activity:
1
2
3
Right-click the McAfee icon, point to VirusScan , then click Options .
Click Advanced , then click the ScriptStopper tab.
Click Enable ScriptStopper (recommended) (
20 McAfee
®
VirusScan
®
Home Edition software
Using ActiveShield
Figure 2-4. ScriptStopper Options
4 Click the WormStopper tab, click Enable WormStopper (recommended) , then click OK (
By default, the following detailed options are enabled:
Pattern matching to detect suspicious activity
Alerting when e-mail is sent to 40 or more recipients
Alerting when 5 or more e-mails are sent within 30 seconds
NOTE
If you modify the number of recipients or seconds for monitoring sent e-mails, it might result in invalid detections.
McAfee recommends that you click No to retain the default setting. Otherwise, click Yes to change the default setting to your setting.
This option can be automatically enabled after the first time a potential worm is detected (see
Managing potential worms on page 24 for details):
Automatic blocking of suspicious outbound e-mails
User Guide 21
Using McAfee VirusScan
Figure 2-5. WormStopper Options
If ActiveShield finds a virus
If ActiveShield finds a virus, a virus alert similar to
appears. For most viruses, Trojan horses, and worms, ActiveShield automatically tries to clean the file. You can then choose how to manage infected files, infected e-mail, suspicious scripts, and potential worms, and whether to submit infected files to the McAfee
AVERT labs for research.
22 McAfee
®
VirusScan
®
Home Edition software
Figure 2-6. Virus Alert
Using ActiveShield
Managing infected files
1 If ActiveShield can clean the file, you can learn more or ignore the alert:
Click Find out more information to view the name, location, and virus name associated with the infected file.
2
Click Continue what I was doing to ignore the alert and close it.
If ActiveShield cannot clean the file, click Quarantine the infected file to encrypt and temporarily isolate infected and suspicious files in the quarantine directory until an appropriate action can be taken.
A confirmation message appears and prompts you to check your computer for viruses. Click Scan to complete the quarantine process.
3 If ActiveShield cannot quarantine the file, click Delete the infected file to try to remove the file.
Managing infected e-mail
1 If you disabled auto-cleaning of e-mail, you can learn more and clean the e-mail:
2
3 a b
Click Find out more information to view the file name, virus name, infection status, sender, and subject associated with the infected e-mail.
Click Clean the infected attachment .
If ActiveShield cannot clean the e-mail, click Quarantine the infected attachment to encrypt and temporarily isolate infected and suspicious files in the quarantine directory until an appropriate action can be taken.
A confirmation message appears and prompts you to check your computer for viruses. Click Scan to complete the quarantine process.
If ActiveShield cannot quarantine the e-mail, click Delete the infected attachment to try to remove the file.
Managing suspicious scripts
1 If ActiveShield detects a suspicious script, you can find out more and then stop the script if you did not intend to initiate it:
2 a Click Find out more information to view the name, location, and description of the activity associated with the suspicious script.
b Click Stop this script to prevent the suspicious script from running.
If you are sure that you trust the script, you can allow the script to run: a b
Click Allow this script this time to let all scripts contained within a single file to run once.
Click Continue what I was doing to ignore the alert and let the script run.
User Guide 23
Using McAfee VirusScan
Managing potential worms
1 If ActiveShield detects a potential worm, you can find out more and then stop the e-mail activity if you did not intend to initiate it: a Click Find out more information to view the recipient list, subject line, message body, and description of the suspicious activity associated with the infected e-mail message.
2 b Click Stop this e-mail to prevent the suspicious e-mail from being sent and delete it from your message queue.
If you are sure that you trust the e-mail activity, click Continue what I was doing to ignore the alert and let the e-mail be sent.
24 McAfee
®
VirusScan
®
Home Edition software
Manually scanning your computer
Manually scanning your computer
The Scan feature lets you selectively search for viruses and potentially unwanted programs on hard drives, floppy disks, and individual files and folders. When
Scan finds an infected file, it automatically tries to clean the file, unless it is a potentially unwanted program. If Scan cannot clean the file, you can quarantine or delete the file.
Manually scanning for viruses and potentially unwanted programs
To scan your computer:
1 Right-click the McAfee icon, point to VirusScan , then click Scan for Viruses .
The Scan for Viruses
dialog box opens ( Figure 2-7 ).
Figure 2-7. Scan for Viruses
2
3
Click the drive, folder, or file that you want to scan.
Select your Scan Options . By default, all of the Scan Options are pre-selected to provide the most thorough scan possible (
):
Scan subfolders — Use this option to scan files contained in your subfolders. Deselect this checkbox to allow checking of only the files visible when you open a folder or drive.
User Guide 25
Using McAfee VirusScan
Example:
are the only files scanned if you deselect the
Scan subfolders checkbox. The folders and their contents are not scanned.
To scan those folders and their contents, you must leave the checkbox selected.
Figure 2-8. Local Disk Contents
Scan all files — Use this option to allow the thorough scanning of all file types. Deselect this checkbox to shorten the scanning time and allow checking of program files and documents only.
Scan within compressed files — Use this option to reveal hidden infected files within .
ZIP and other compressed files. Deselect this checkbox to prevent checking of any files or compressed files within the compressed file.
Sometimes virus authors plant viruses in a .
ZIP file, then insert that .
ZIP file into another .
ZIP file in an effort to bypass anti-virus scanners. Scan can detect these viruses as long as you leave this option selected.
Scan for new unknown viruses — Use this option to find the newest viruses that might not have existing “cures.” This option uses advanced heuristic techniques that try to match files to the signatures of known viruses, while also looking for telltale signs of unidentified viruses in the files.
This scanning method also looks for file traits that can generally rule out that the file contains a virus. This minimizes the chances that Scan gives a false indication. Nevertheless, if a heuristic scan detects a virus, you should treat it with the same caution that you would treat a file that you know contains a virus.
This option provides the most thorough scan, but is generally slower than a normal scan.
26 McAfee
®
VirusScan
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Home Edition software
Manually scanning your computer
4
5
Scan for potentially unwanted programs — Use this option to detect spyware, adware, dialers, and other programs that you did not intend to install on your computer.
NOTE
Leave all options selected for the most thorough scan possible.
This effectively scans every file in the drive or folder that you select, so allow plenty of time for the scan to complete. The larger the hard drive and the more files you have, the longer the scan takes.
Click Scan to start scanning files.
When the scan is finished, a scan summary shows the number of files scanned, the number of files detected, the number of potentially unwanted programs, and the number of detected files that were automatically cleaned.
Click OK to close the summary, and view the list of any detected files in the
Scan for Viruses dialog box (
Figure 2-9. Scan Results
NOTE
Scan counts a compressed file (.
ZIP
, .
CAB
, etc.) as one file within the Files Scanned number. Also, the number of files scanned can vary if you have deleted your temporary Internet files since your last scan.
User Guide 27
Using McAfee VirusScan
6 If Scan finds no viruses or potentially unwanted programs, click Back to select another drive or folder to scan, or click Close to close the dialog box.
Otherwise, see
If Scan finds a virus or potentially unwanted program on page 30 .
Scanning via Windows Explorer
VirusScan provides a shortcut menu to scan selected files, folders, or drives for viruses and potentially unwanted programs from within Windows Explorer.
To scan files in Windows Explorer:
1 Open Windows Explorer.
2 Right-click the drive, folder, or file that you want to scan, and then click Scan for Viruses .
The Scan for Viruses dialog box opens and starts scanning files. By default, all of the default Scan Options are pre-selected to provide the most thorough scan possible (
Scanning via Microsoft Outlook
VirusScan provides a toolbar icon to scan for viruses and potentially unwanted programs in selected message stores and their subfolders, mailbox folders, or e-mail messages containing attachments from within Microsoft Outlook 97 or later.
To scan e-mail in Microsoft Outlook:
1
2
Open Microsoft Outlook.
Click the message store, folder, or e-mail message containing an attachment that you want to scan, and then click the e-mail scanning toolbar icon .
The e-mail scanner opens and starts scanning files. By default, all of the default
Scan Options are pre-selected to provide the most thorough scan possible
Automatically scanning for viruses and potentially unwanted programs
Although VirusScan scans files when they are accessed by either you or your computer, you can schedule automatic scanning in Windows Scheduler to thoroughly check your computer for viruses and potentially unwanted programs at specified intervals.
To schedule a scan:
1 Right-click the McAfee icon, point to VirusScan , then click Options .
The VirusScan Options dialog box opens.
28 McAfee
®
VirusScan
®
Home Edition software
Manually scanning your computer
2 Click the Scheduled Scan tab (
).
Figure 2-10. Scheduled Scan Options
3
4
Select the Scan My Computer at a scheduled time checkbox to enable automatic scanning.
Specify a schedule for automatic scanning:
To accept the default schedule (8PM every Friday), click OK .
To edit the schedule: a. Click Edit .
b. Select how often to scan your computer in the Schedule Task list, and then select additional options in the dynamic area below it:
Daily - Specify the number of days between scans.
Weekly (the default) - Specify the number of weeks between scans as well as the names of the day(s) of the week.
Monthly - Specify which day of the month to scan. Click Select Months to specify which months to scan, and click OK .
Once - Specify which date to scan.
User Guide 29
Using McAfee VirusScan
5
6
NOTE
These options in Windows Scheduler are not supported:
At system startup , When idle , and Show multiple schedules . The last supported schedule remains enabled until you select from among the valid options.
c. Select the time of day to scan your computer in the Start time box.
d. To select advanced options, click Advanced .
The Advanced Schedule Options dialog box opens.
i. Specify a start date, end date, duration, end time, and whether to stop the task at the specified time if the scan is still running.
ii. Click OK to save your changes and close the dialog box. Otherwise, click Cancel .
Click OK to save your changes and close the dialog box. Otherwise, click
Cancel .
To revert to the default schedule, click Set to Default . Otherwise, click OK .
If Scan finds a virus or potentially unwanted program
For most viruses, Trojans, and worms, Scan automatically tries to clean the file. You can then choose how to manage detected files, including whether to submit them to the
McAfee AVERT labs for research. If Scan detects a potentially unwanted program, you can manually try to clean, quarantine, or delete it (AVERT submission is unavailable).
To manage a virus or potentially unwanted program:
1
2
3
If a file appears in the List of Detected Files , click the checkbox in front of the file to select it.
NOTE
If more than one file appears in the list, you can select the checkbox in front of the File Name list to perform the same action on all of the files. You can also click the file name in the
Scan Information list to view details from the Virus
Information Library.
If the file is a potentially unwanted program, you can click Clean to try to clean it.
If Scan cannot clean the file, you can click Quarantine to encrypt and temporarily isolate infected and suspicious files in the quarantine directory until an appropriate action can be taken. (See
for details.)
30 McAfee
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VirusScan
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Home Edition software
Managing quarantined files
4 If Scan cannot clean or quarantine the file, you can do either of the following:
Click Delete to remove the file.
Click Cancel to close the dialog box without taking any further action.
If Scan cannot clean or delete the detected file, consult the Virus Information
Library at http://us.mcafee.com/virusInfo/default.asp
for instructions on manually deleting the file.
If a detected file prevents you from using your Internet connection or from using your computer at all, try using a Rescue Disk to start your computer. The Rescue
Disk, in many cases, can start a computer if a detected file disables it. See
Creating a Rescue Disk on page 33
for details.
For more help, consult McAfee Customer Support at http://www.mcafeehelp.com/ .
Managing quarantined files
The Quarantine feature encrypts and temporarily isolates infected and suspicious files in the quarantine directory until an appropriate action can be taken. Once cleaned, a quarantined file can then be restored to its original location.
To manage a quarantined file:
1 Right-click the McAfee icon, point to VirusScan , then click Manage Quarantined
Files .
A list of quarantined files appears (
).
Figure 2-11. Manage Quarantined Files
User Guide 31
Using McAfee VirusScan
3
4
5
6
2
7
Select the checkbox next to the file(s) you want to clean.
NOTE
If more than one file appears in the list, you can select the checkbox in front of the File Name list to perform the same action on all of the files. You can also click the virus name in the Status list to view details from the Virus Information
Library.
Or, click Add , select a suspicious file to add to the quarantine list, click Open , then select it in the quarantine list.
Click Clean .
If the file is cleaned, click Restore to move it back to its original location.
If VirusScan cannot clean the virus, click Delete to remove the file.
If VirusScan cannot clean or delete the file, and if it is not a potentially unwanted program, you can submit the file to the McAfee AntiVirus
Emergency Response Team (AVERT
TM
) for research: a Update your virus signature files if they are more than two weeks old.
b c
Verify your subscription.
Select the file and click Submit to submit the file to AVERT.
VirusScan sends the quarantined file as an attachment with an e-mail message containing your e-mail address, country, software version, OS, and the file’s original name and location. The maximum submission size is one unique 1.5MB file per day.
Click Cancel to close the dialog box without taking any further action.
32 McAfee
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VirusScan
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Creating a Rescue Disk
Creating a Rescue Disk
Rescue Disk is a utility that creates a bootable floppy disk that you can use to start your computer and scan it for viruses if a virus keeps you from starting it normally.
NOTE
You must be connected to the Internet to download the Rescue
Disk image. Also, Rescue Disk is available for computers with
FAT (FAT 16 and FAT 32) hard drive partitions only. It is unnecessary for NTFS partitions.
To create a Rescue Disk:
1
2
On a non-infected computer, insert a non-infected floppy disk in drive A. You might want to use Scan to ensure that both the computer and the floppy disk are virus-free. (See
Manually scanning for viruses and potentially unwanted programs on page 25 for details.)
Right-click the McAfee icon, point to VirusScan , then click Create Rescue Disk .
The Create a Rescue Disk dialog box opens (
Figure 2-12. Create a Rescue Disk
3
4
Click Create to create the Rescue Disk.
If this is your first time creating a Rescue Disk, a message tells you that Rescue
Disk needs to download the image file for the Rescue Disk. Click OK to download the component now, or click Cancel to download it later.
A warning message tells you that the contents of the floppy disk will be lost.
Click Yes to continue creating the Rescue Disk.
The creation status appears in the Create Rescue Disk dialog box.
User Guide 33
Using McAfee VirusScan
5
6
When the message “Rescue disk created” appears, click OK , then close the
Create Rescue Disk dialog box.
Remove the Rescue Disk from the drive, write-protect it, and store it in a safe location.
Write-protecting a Rescue Disk
To write-protect a Rescue Disk:
1
2
Turn the floppy disk label-side down (the metal circle should be visible).
Locate the write-protect tab. Slide the tab so the hole is visible.
Using a Rescue Disk
To use a Rescue Disk:
1 Turn off the infected computer.
2
3
4
Insert the Rescue Disk into the drive.
Turn the computer on.
A gray window with several options appears.
Choose the option that best suits your needs by pressing the Function keys (for example, F2, F3).
NOTE
Rescue Disk starts automatically in 60 seconds if you do not press any of the keys.
Updating a Rescue Disk
It is a good idea to update your Rescue Disk regularly. To update your Rescue
Disk, follow the same instructions for creating a new Rescue Disk.
Automatically reporting viruses
You can anonymously send virus tracking information for inclusion in our World
Virus Map. Automatically register for this free, secure feature either during
VirusScan installation (in the Virus Map Reporting dialog box), or at any time in the
Virus Map Reporting tab of the VirusScan Options dialog box.
34 McAfee
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VirusScan
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Automatically reporting viruses
Reporting to the World Virus Map
To automatically report virus information to the World Virus Map:
1
2
Right-click the McAfee icon, point to VirusScan , then click Options .
The VirusScan Options dialog box opens.
Click the Virus Map Reporting tab (
).
Figure 2-13. Virus Map Reporting Options
3
4
5
Accept the default Yes, I want to participate to anonymously send your virus information to McAfee for inclusion in its World Virus Map of worldwide infection rates. Otherwise, select No, I don’t want to participate to avoid sending your information.
If you are in the United States, select the state and enter the zip code where your computer is located. Otherwise, VirusScan automatically tries to select the country where your computer is located.
Click OK .
User Guide 35
Using McAfee VirusScan
Viewing the World Virus Map
Whether or not you participate in the World Virus Map, you can view the latest worldwide infection rates via the McAfee icon in your Windows system tray.
To view the World Virus Map:
Right-click the McAfee icon, point to VirusScan , then click World Virus Map .
The World Virus Map web page appears (
Figure 2-14. World Virus Map
By default, the World Virus Map shows the number of infected computers worldwide over the past 30 days, and also when the reporting data was last updated. You can change the map view to show the number of infected files, or change the time period to show only the results over the past 7 days or the past 24 hours.
The Virus Tracking section lists cumulative totals for the number of scanned files, infected files, and infected computers that have been reported since the date shown.
36 McAfee
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VirusScan
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Updating VirusScan
Updating VirusScan
When you are connected to the Internet, VirusScan automatically checks for updates every four hours, then automatically downloads and installs weekly virus definition updates without interrupting your work.
Virus definition files are approximately 100 KB and thus have minimal impact on system performance during download.
If a product update or virus outbreak occurs, an alert appears. Once alerted, you can then choose to update VirusScan to remove the threat of a virus outbreak.
Automatically checking for updates
McAfee SecurityCenter is automatically configured to check for updates for all of your McAfee services every four hours when you are connected to the Internet, then notify you with alerts and sounds. By default, SecurityCenter automatically downloads and installs any available updates.
NOTE
In some cases, you will be prompted to restart your computer to complete the update. Be sure to save all of your work and close all applications before restarting.
Manually checking for updates
In addition to automatically checking for updates every four hours when you are connected to the Internet, you can also manually check for updates at any time.
To manually check for VirusScan updates:
1
2
3
Ensure your computer is connected to the Internet.
Right-click the McAfee icon, then click Updates .
The SecurityCenter Updates dialog box opens.
Click Check Now .
If an update exists, the VirusScan Updates dialog box opens (
). Click Update to continue.
If no updates are available, a dialog box tells you that VirusScan is up-to-date.
Click OK to close the dialog box.
User Guide 37
Using McAfee VirusScan
Figure 2-15. Updates Dialog Box
4
5
Log on to the web site if prompted. The Update Wizard installs the update automatically.
Click Finish when the update is finished installing.
NOTE
In some cases, you will be prompted to restart your computer to complete the update. Be sure to save all of your work and close all applications before restarting.
38 McAfee
®
VirusScan
®
Home Edition software
Index
A
ActiveShield cleaning a virus ,
default scan setting ,
to
disabling ,
enabling ,
scan options ,
scanning all file types ,
scanning all files ,
scanning e-mail and attachments ,
scanning for new unknown viruses ,
scanning for scripts and worms ,
scanning inbound instant message attachments ,
scanning program files and documents only ,
starting ,
stopping ,
testing ,
alerts for infected e-mail ,
for infected files ,
for potential worms ,
for suspicious scripts ,
for viruses ,
AVERT, submitting suspicious files to ,
C
configuring
VirusScan
ActiveShield ,
Scan ,
creating a Rescue Disk ,
E
e-mail and attachments auto-cleaning ,
cleaning ,
deleting ,
disabling auto-cleaning ,
quarantining ,
scanning ,
G
getting started with VirusScan ,
I
inbound instant message attachments auto-cleaning ,
scanning ,
L
list of detected files (Scan) ,
M
McAfee SecurityCenter ,
Microsoft Outlook ,
N
new features ,
P
potentially unwanted programs cleaning ,
deleting ,
detecting ,
quarantining ,
User Guide 39
Index
Q
Quarantine adding suspicious files ,
cleaning files ,
to
deleting files ,
deleting suspicious files ,
managing suspicious files ,
restoring cleaned files ,
to
submitting suspicious files ,
Quick Start Card ,
R
Rescue Disk creating ,
updating ,
using ,
write-protecting ,
S
Scan automatic scanning ,
cleaning a virus or potentially unwanted program ,
deleting a virus or potentially unwanted program ,
manual scanning ,
manual scanning via Microsoft Outlook toolbar ,
manual scanning via Windows Explorer ,
quarantining a virus or potentially unwanted program ,
Scan all files option ,
Scan for new unknown viruses option ,
Scan for potentially unwanted programs option ,
Scan subfolders option ,
Scan within compressed files option ,
testing ,
to
Scan all files option (Scan) ,
Scan for new unknown viruses option (Scan) ,
Scan for potentially unwanted programs option
(Scan) ,
scan options
ActiveShield ,
to
Scan ,
Scan subfolders option (Scan) ,
Scan within compressed files option (Scan) ,
scanning all files ,
compressed files ,
for new unknown viruses ,
for scripts and worms ,
program files and documents only ,
scheduling automatic scans ,
subfolders ,
via Microsoft Outlook toolbar ,
via Windows Explorer ,
scheduling scans ,
scripts alerts ,
allowing ,
stopping ,
ScriptStopper ,
submitting suspicious files to AVERT ,
system requirements ,
T
technical support ,
testing VirusScan ,
Trojans alerts ,
detecting ,
U
Update Wizard ,
updating a Rescue Disk ,
VirusScan automatically ,
manually ,
using a Rescue Disk ,
40 McAfee
®
VirusScan
®
Home Edition software
V
viruses alerts ,
allowing suspicious scripts ,
cleaning ,
cleaning infected e-mail attachments ,
deleting ,
deleting infected e-mail attachments ,
deleting infected files ,
detecting ,
detecting with ActiveShield ,
quarantining ,
quarantining infected e-mail attachments ,
quarantining infected files ,
reporting automatically ,
stopping potential worms ,
stopping suspicious scripts ,
VirusScan getting started ,
reporting viruses automatically ,
scanning via Microsoft Outlook toolbar ,
scanning via Windows Explorer ,
scheduling scans ,
testing ,
updating automatically ,
updating manually ,
W
Windows Explorer ,
World Virus Map reporting ,
viewing ,
worms alerts ,
,
detecting ,
stopping ,
WormStopper ,
write-protecting a Rescue Disk ,
Index
User Guide 41
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