Programa que
está diseñado para copiarse a sí mismo con la intención de infectar otros
programas o ficheros. [CCN-STIC-430:2006]
Segmento de
código que puede copiarse, tras la satisfacción de alguna condición lógica o
temporal, para infectar otros programas, a los que ataca modificándolos,
destruyéndolos, etc. [Ribagorda:1997]
Virus que
muta con cada nueva infección, haciendo así su detección mediante una firma
imposible.
Los más
sofisticados usan técnicas de cifrado con claves criptográficas aleatorias que
varían de infección en infección. El segmento de código encargado de esta
generación aleatoria se denomina motor de mutaciones.
[Ribagorda:1997]
Virus que
oculta su presencia incluso a los productos antivirus. Por ejemplo, puede
cambiar el código de detección de errores para engañar a un programa de
detección. [Ribagorda:1997]
Self-replicating, malicious
code that attaches itself to an application program or other executable system
component and leaves no obvious signs of its presence.
The Tallinn
Manual, 2013
A self-replicating program
that spreads to other users by inserting copies of itself into other executable
code or documents. [CSS NZ:2011]
A computer program that can
copy itself and infect a computer without permission or knowledge of the user.
A virus might corrupt or delete data on a computer, use e-mail programs to
spread itself to other computers, or even erase everything on a hard disk. [CNSSI_4009:2010]
(I) A self-replicating (and
usually hidden) section of computer software (usually malicious logic) that
propagates by infecting -- i.e., inserting a copy of itself into and becoming
part of -- another program. A virus cannot run by itself; it requires that its
host program be run to make the virus active. [RFC4949:2007]
A form of malware that is
designed to self-replicatemake copies of itselfand distribute the copies to
other files, programs, or computers. [NIST-SP800-83:2005]
A self-replicating program
that runs and spreads by modifying other programs or files.
[NIST-SP800-61:2004]
A computer program with the
ability to replicate itself usually by attaching itself to other programs to
the detriment of security and integrity.
May or may not be introduced
through a Trojan Horse.
[IRM-5239-8:1995]
A hidden, self-replicating
section of computer software, usually malicious logic, that propagates by
infecting - i.e., inserting a copy of itself into and becoming part of -
another program. A virus cannot run by itself; it requires that its host
program be run to make the virus active.
http://www.sans.org/security-resources/glossary-of-terms/
A malicious program that
replicates itself and may cause damage to a computer system by attacking or
attaching itself to boot information, another program or a document that uses
macros.
http://www.csoonline.com/glossary/
A virus is a program or code
that replicates itself onto other files with which it comes in contact; that
is, a virus can infect another program, boot sector, partition sector, or a
document that supports macros, by inserting itself or attaching itself to that
medium. Most viruses only replicate, though many can do damage to a computer
system or a user's data as well.
http://www.symantec.com/avcenter/refa.html
A program or code segment
written in the internal macro language of an application. Some macros
replicate, while others infect documents.
http://www.symantec.com/avcenter/refa.html
A virus that can change its
byte pattern when it replicates; thereby, avoiding detection by simple
string-scanning techniques.
http://www.symantec.com/avcenter/refa.html
A computer virus that
actively attacks an antivirus program or programs in an effort to prevent
detection.
http://www.symantec.com/avcenter/refa.html
Un virus est un
logiciel ou un morceau de logiciel qui, pour pouvoir se propager, s'attache à
tout type de fichier ou autre logiciel, et qui a pour vocation l'infection et
sa propagation d'une machine à une autre, à l'insu des utilisateurs. Son code
exécutable se greffe au code exécutable de son programme hôte lui permettant
ainsi de se propager et de s'exécuter à l'aide de programmes hôtes. Un virus ne
peut s'exécuter que par l'exécution d'un programme hôte à la différence du ver
qui possède son propre moteur de propagation. Pour chaque virus apparu, de
nombreuses variantes sont écrites.
http://www.cases.public.lu/functions/glossaire/
Type de virus qui se
transforme en se reproduisant pour rendre sa détection plus difficile.
Contrairement aux virus polymorphes, les virus métamorphiques se désintègrent
et se reconstruisent entièrement quand ils se reproduisent.
http://www.cases.public.lu/functions/glossaire/
virus qui peut prendre
plusieurs formes et est capable de modifier sa signature à chaque nouvelle
génération, le rendant difficilement détectable pour les anti-virus, notamment
ceux se basant uniquement sur des bases de données de signatures.
http://www.cases.public.lu/functions/glossaire/