Classe: Adware
Adware couvre les programmes conçus pour afficher des publicités (généralement sous forme de bannières), rediriger les demandes de recherche vers des sites Web publicitaires et collecter des données marketing sur l'utilisateur (par exemple, les types de sites qu'il visite) afin d'afficher des publicités personnalisées. l'ordinateur. Outre l'affichage de publicités et la collecte de données, ces types de programmes ne permettent généralement pas de connaître leur présence dans le système: il n'y a aucun signe du programme dans la barre d'état système et aucune indication dans le menu du programme que les fichiers ont été installés. Souvent, les programmes Adware ne disposent pas de procédures de désinstallation et utilisent des technologies qui s'apparentent à la technologie antivirus pour aider le programme à pénétrer furtivement l'ordinateur et à passer inaperçu. Pénétration Adware pénètre de deux manières différentes sur l'ordinateur d'un utilisateur: il est intégré à certains programmes freeware et shareware installés sans autorisation sur l'ordinateur d'un utilisateur à la suite d'une visite sur un site Web infecté. La plupart des programmes freeware et shareware cessent d'afficher des publicités une fois qu'ils ont été achetés et / ou enregistrés. Mais ces programmes utilisent souvent des utilitaires Adware tiers intégrés et, dans certains cas, ces utilitaires restent installés sur l'ordinateur de l'utilisateur même une fois les programmes enregistrés. En outre, supprimer le composant Adware, qui est toujours utilisé par un programme pour afficher des publicités, peut provoquer un dysfonctionnement du programme. L'objectif principal de la propagation d'Adware via la première méthode est d'extraire un type de paiement pour le logiciel en diffusant des publicités à l'utilisateur (les parties qui font les publicités paient l'agence de publicité et l'agence publicitaire paie le développeur Adware). Adware contribue également à réduire les dépenses des développeurs de logiciels (les revenus générés par Adware les incitent à écrire de nouveaux programmes et à améliorer ceux qui existent déjà), tout en réduisant les coûts pour les utilisateurs. Les technologies Hacker sont souvent utilisées lorsque des composants publicitaires sont installés sur l'ordinateur d'un utilisateur à la suite d'une visite sur un site Web infecté. Par exemple, l'ordinateur peut être pénétré via une vulnérabilité de navigateur et des chevaux de Troie conçus pour s'installer furtivement (Trojan-Downloader ou Trojan-Dropper) peuvent être utilisés. Les programmes publicitaires qui fonctionnent de cette manière sont souvent appelés Pirate de navigateur. Affichage des publicités La publicité est présentée à l'utilisateur de deux manières principales: en téléchargeant du texte publicitaire et des images sur un ordinateur à partir de serveurs Web ou FTP appartenant à l'annonceur redirigeant les requêtes de recherche de navigateur Internet vers des sites publicitaires. Dans certains cas, les demandes de redirection ont lieu uniquement si la page Web demandée par l'utilisateur n'est pas disponible, c'est-à-dire s'il s'agit d'une erreur dans l'URL. Collecte de données En plus d'afficher des publicités, de nombreux systèmes publicitaires collectent également des données sur l'ordinateur et l'utilisateur, telles que: l'adresse IP de l'ordinateur le système d'exploitation et la version du navigateur une liste des sites les plus visités mener des campagnes publicitaires ultérieures. Remarque: il est important de ne pas confondre Adware qui recueille des données avec les programmes de logiciels espions Trojan. La différence est que Adware recueille des données avec le consentement de l'utilisateur. Si Adware n'indique pas à l'utilisateur qu'il collecte des informations, il est alors classé comme un programme malveillant (Malware), spécifiquement couvert par le comportement Trojan-Spy.Plus d'informations
Plateforme: Win32
Win32 est une API sur les systèmes d'exploitation Windows NT (Windows XP, Windows 7, etc.) qui prend en charge l'exécution des applications 32 bits. L'une des plateformes de programmation les plus répandues au monde.Famille: AdWare.Win32.InstallMonster
No family descriptionExamples
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Tactics and Techniques: Mitre*
TA0002
Execution
The adversary is trying to run malicious code.
Execution consists of techniques that result in adversary-controlled code running on a local or remote system. Techniques that run malicious code are often paired with techniques from all other tactics to achieve broader goals, like exploring a network or stealing data. For example, an adversary might use a remote access tool to run a PowerShell script that does Remote System Discovery.
Execution consists of techniques that result in adversary-controlled code running on a local or remote system. Techniques that run malicious code are often paired with techniques from all other tactics to achieve broader goals, like exploring a network or stealing data. For example, an adversary might use a remote access tool to run a PowerShell script that does Remote System Discovery.
T1204.002
User Execution: Malicious File
An adversary may rely upon a user opening a malicious file in order to gain execution. Users may be subjected to social engineering to get them to open a file that will lead to code execution. This user action will typically be observed as follow-on behavior from Spearphishing Attachment. Adversaries may use several types of files that require a user to execute them, including .doc, .pdf, .xls, .rtf, .scr, .exe, .lnk, .pif, and .cpl.
Adversaries may employ various forms of Masquerading and Obfuscated Files or Information to increase the likelihood that a user will open and successfully execute a malicious file. These methods may include using a familiar naming convention and/or password protecting the file and supplying instructions to a user on how to open it.(Citation: Password Protected Word Docs)
While Malicious File frequently occurs shortly after Initial Access it may occur at other phases of an intrusion, such as when an adversary places a file in a shared directory or on a user's desktop hoping that a user will click on it. This activity may also be seen shortly after Internal Spearphishing.
Adversaries may employ various forms of Masquerading and Obfuscated Files or Information to increase the likelihood that a user will open and successfully execute a malicious file. These methods may include using a familiar naming convention and/or password protecting the file and supplying instructions to a user on how to open it.(Citation: Password Protected Word Docs)
While Malicious File frequently occurs shortly after Initial Access it may occur at other phases of an intrusion, such as when an adversary places a file in a shared directory or on a user's desktop hoping that a user will click on it. This activity may also be seen shortly after Internal Spearphishing.
TA0003
Persistence
The adversary is trying to maintain their foothold.
Persistence consists of techniques that adversaries use to keep access to systems across restarts, changed credentials, and other interruptions that could cut off their access. Techniques used for persistence include any access, action, or configuration changes that let them maintain their foothold on systems, such as replacing or hijacking legitimate code or adding startup code.
Persistence consists of techniques that adversaries use to keep access to systems across restarts, changed credentials, and other interruptions that could cut off their access. Techniques used for persistence include any access, action, or configuration changes that let them maintain their foothold on systems, such as replacing or hijacking legitimate code or adding startup code.
T1546.002
Event Triggered Execution: Screensaver
Adversaries may establish persistence by executing malicious content triggered by user inactivity. Screensavers are programs that execute after a configurable time of user inactivity and consist of Portable Executable (PE) files with a .scr file extension.(Citation: Wikipedia Screensaver) The Windows screensaver application scrnsave.scr is located in
The following screensaver settings are stored in the Registry (
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Adversaries can use screensaver settings to maintain persistence by setting the screensaver to run malware after a certain timeframe of user inactivity.(Citation: ESET Gazer Aug 2017)
C:\Windows\System32\, and C:\Windows\sysWOW64\ on 64-bit Windows systems, along with screensavers included with base Windows installations.The following screensaver settings are stored in the Registry (
HKCU\Control Panel\Desktop\) and could be manipulated to achieve persistence:*
SCRNSAVE.exe - set to malicious PE path*
ScreenSaveActive - set to '1' to enable the screensaver*
ScreenSaverIsSecure - set to '0' to not require a password to unlock*
ScreenSaveTimeout - sets user inactivity timeout before screensaver is executedAdversaries can use screensaver settings to maintain persistence by setting the screensaver to run malware after a certain timeframe of user inactivity.(Citation: ESET Gazer Aug 2017)
TA0004
Privilege Escalation
The adversary is trying to gain higher-level permissions.
Privilege Escalation consists of techniques that adversaries use to gain higher-level permissions on a system or network. Adversaries can often enter and explore a network with unprivileged access but require elevated permissions to follow through on their objectives. Common approaches are to take advantage of system weaknesses, misconfigurations, and vulnerabilities. Examples of elevated access include:
* SYSTEM/root level
* local administrator
* user account with admin-like access
* user accounts with access to specific system or perform specific function
These techniques often overlap with Persistence techniques, as OS features that let an adversary persist can execute in an elevated context.
Privilege Escalation consists of techniques that adversaries use to gain higher-level permissions on a system or network. Adversaries can often enter and explore a network with unprivileged access but require elevated permissions to follow through on their objectives. Common approaches are to take advantage of system weaknesses, misconfigurations, and vulnerabilities. Examples of elevated access include:
* SYSTEM/root level
* local administrator
* user account with admin-like access
* user accounts with access to specific system or perform specific function
These techniques often overlap with Persistence techniques, as OS features that let an adversary persist can execute in an elevated context.
T1546.002
Event Triggered Execution: Screensaver
Adversaries may establish persistence by executing malicious content triggered by user inactivity. Screensavers are programs that execute after a configurable time of user inactivity and consist of Portable Executable (PE) files with a .scr file extension.(Citation: Wikipedia Screensaver) The Windows screensaver application scrnsave.scr is located in
The following screensaver settings are stored in the Registry (
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Adversaries can use screensaver settings to maintain persistence by setting the screensaver to run malware after a certain timeframe of user inactivity.(Citation: ESET Gazer Aug 2017)
C:\Windows\System32\, and C:\Windows\sysWOW64\ on 64-bit Windows systems, along with screensavers included with base Windows installations.The following screensaver settings are stored in the Registry (
HKCU\Control Panel\Desktop\) and could be manipulated to achieve persistence:*
SCRNSAVE.exe - set to malicious PE path*
ScreenSaveActive - set to '1' to enable the screensaver*
ScreenSaverIsSecure - set to '0' to not require a password to unlock*
ScreenSaveTimeout - sets user inactivity timeout before screensaver is executedAdversaries can use screensaver settings to maintain persistence by setting the screensaver to run malware after a certain timeframe of user inactivity.(Citation: ESET Gazer Aug 2017)
* © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.