home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
CD Direkt 1995 #1
/
Image.iso
/
cdd
/
virus
/
mcafee
/
scan117.doc
< prev
next >
Wrap
Text File
|
1994-07-15
|
56KB
|
1,378 lines
VIRUSCAN Version 9.30 V117
Copyright (C) 1989 - 1994 by McAfee Associates
All rights reserved.
Documentation by Aryeh Goretsky.
McAfee Associates, Inc. (408) 988-3832 office
2710 Walsh Avenue, Suite 200 (408) 970-9727 fax
Santa Clara, CA 95051-0963 (408) 988-4004 BBS (25 lines)
U.S.A. USR HST/v.32/v.42bis/MNP1-5
CompuServe GO MCAFEE
InterNet support@mcafee.COM
America Online MCAFEE
TABLE OF CONTENTS:
WHAT'S NEW . . . . . . . . . . . . . . . . . . . . . . . . . .2
- New features and viruses in this release
- System Requirements
OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . .3
- Detection of known viruses
- Detection of new and unknown viruses
SYNOPSIS . . . . . . . . . . . . . . . . . . . . . . . . . . .4
- Technical description of known virus detection
- Technical description of new/unknown virus detection
AUTHENTICITY . . . . . . . . . . . . . . . . . . . . . . . . .5
- How to verify the SCAN.EXE program file
COMMAND SUMMARY. . . . . . . . . . . . . . . . . . . . . . . .6
- One-line description of switches
OPTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
- Detailed explanation of switches
EXAMPLES . . . . . . . . . . . . . . . . . . . . . . . . . . .15
- Samples of frequently-used options
EXIT CODES . . . . . . . . . . . . . . . . . . . . . . . . . .16
- Running VIRUSCAN from batch files
VIRUS REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . .16
- How to manually remove a virus
REGISTRATION . . . . . . . . . . . . . . . . . . . . . . . . .17
- How to register VIRUSCAN
TECHNICAL SUPPORT INFORMATION . . . . . . . . . . . . . . . .17
- Information you should have ready when calling
OBTAINING THE LATEST VERSION OF VIRUSCAN . . . . . . . . . . .18
- BBS, CompuServe, and Internet access to SCAN
APPENDIX A . . . . . . . . . . . . . . . . . . . . . . . . . .19
- Creating a virus string file with the /EXT option
APPENDIX B . . . . . . . . . . . . . . . . . . . . . . . . . .21
- How to check only memory for viruses
- Validation codes: Tips and Tricks
- Reformatting infected floppies with DOS 5.00 & 6.00
- Creating a Recovery Disk
APPENDIX C . . . . . . . . . . . . . . . . . . . . . . . . . .23
- Foreign Language Support
Page 1
VIRUSCAN Version 9.30V117 Page 2
WHAT'S NEW
This is Version 9.30V117 of VIRUSCAN (SCAN.EXE). This
release adds detection of 31 new viruses and 6 variants,
bringing the total number of known viruses to 1,939, or counting
variants, 2,901 viruses.
Beginning with Version 111, we will now be using PKZIP
Version 2.04g to archive our files.
For a complete list of known viruses, refer to the enclosed
VIRLIST.TXT file. For a description of known viruses please
refer to Patricia Hoffman's Hypertext VSUM.
SYSTEM REQUIREMENTS
SCAN requires 411Kb of free RAM and DOS 2.0 or above.
Additional memory is required for foriegn language support (see
APPENDIX C for details).
VIRUSCAN works with 3Com 3/Share and 3/Open, Artisoft LanTastic,
AT&T StarLAN, Banyan VINES, DEC Pathworks, IBM LAN Server,
Microsoft LAN Manager, Novell NetWare, and any other IBMNET or
NETBIOS compatible network operating systems. Contact McAfee
Associates or your local Authorized Agent if you do not see your
network listed.
SCAN is designed to check floppy, hard, CD-ROM, and
compressed (SuperStor, Stacker, Doublespace, etc.) disks on
both stand-alone and networked PC's as well as network file
servers for pre-existing infections of known and unknown
viruses. If you have a Novell NetWare file server, you may
wish to use the NETSHIELD virus prevention NetWare Loadable
Module instead.
SCAN displays messages in English (default); foreign
language support is available for many other languages. Please
refer to APPENDIX C for information on foreign language support.
NOTE: WRITE-PROTECT THE FLOPPY DISK CONTAINING THE VIRUSCAN
(SCAN.EXE) PROGRAM BEFORE SCANNING TO PREVENT VIRUSCAN
FROM BECOMING INFECTED BY A COMPUTER VIRUS.
VIRUSCAN Version 9.30V117 Page 3
OVERVIEW (Known Virus Detection)
VIRUSCAN Version 9.30V117 (filename SCAN.EXE)
identifies all 1,939 known computer viruses and their
variants. Some viruses have been modified so that more
than one "strain" exists. Counting such modifications,
2,901 viruses exist.
All known viruses infect one or more of the following
areas: the hard disk partition table (alias Master Boot Record);
the DOS Boot Sector of disks; or one or more executable files on
the system. Executable files include operating system files,
.COM files, .EXE files, overlay files, or any other files
containing program code. A virus that infects more than one
area, such as a boot sector and an executable file is called
a multipartite virus.
SCAN checks files, subdirectories, diskettes or entire
systems for pre-existing computer virus infections. In the
case of infection by a known virus, it will identify the virus
infecting the system, the area(s) it was found, and the I.D.
code used by CLEAN-UP to remove it.
Infected files can be removed using the /D switch in SCAN
to erase the file, or with the CLEAN-UP universal virus removal
(disinfection) program. CLEAN-UP is recommended because in most
cases it will eliminate the virus and fully restore infected
programs or system areas to normal operation.
The accompanying VIRLIST.TXT file lists describes all
viruses identified by SCAN and their associated I.D. codes for
removal by CLEAN-UP.
OVERVIEW (Unknown and New Virus Detection)
SCAN has three separate methods of detecting unknown and
new viruses:
· Validation codes which can be periodically checked against
to look for the changes made by a virus to files or system
areas.
· Generic and Family virus detectors to look for new viruses
which are derivatives of older viruses.
· External virus signatures to insert new virus signature
strings on a temporary basis to SCAN.
VIRUSCAN Version 9.30V117 Page 4
SYNOPSIS (technical description of known virus detection)
SCAN detects known viruses by searching the system for
strings (sequences of bytes) unique to each computer virus and
reporting their presence if found. For viruses which encrypt or
cipher their code so that every infection of the viru