Netskope Threat Labs Report: RETAIL

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RETAILNovember, 2023

En este informe Adopción de aplicaciones en la nube

Aplicaciones en la nube más populares Principales aplicaciones utilizadas para cargas Principales aplicaciones utilizadas para las descargas

Abuso de las aplicaciones en la nube

Entrega de malware en la nube Aplicaciones en la nube abusadas para la entrega de malware

Malware & Ransomware

Principales tipos de malware Principales familias de malware y ransomware

Recomendaciones Netskope Threat Labs Acerca de este informe

8 min read

En este informe

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Cloud App Adoption: Google Drive, Google Gmail, and WhatsApp are among the top five most popular apps in retail, where all three are significantly more popular than they are in other industries. Although Microsoft OneDrive still takes the top spot, these three apps push Microsoft Teams and Microsoft SharePoint further down the rankings compared to other industries.

Cloud App Abuse: Google Drive and Google Gmail are the two most popular apps for malware downloads in the retail sector, a contrast to other industry verticals, where Microsoft OneDrive is the top app.

Malware & Ransomware: Attackers primarily targeted users in the retail sector with Trojans to trick them into downloading other malware payloads. Other malware types from famous malware families were also spotted such as Guloader and Remcos, as well as the Avaddon ransomware.

Adopción de aplicaciones en la nube

The average user in the retail sector interacts with an average of 20 cloud apps per month. In the past 12 months the usage average remains very consistent in the retail sector, with a range between 19 and 21 apps. The top 1% of users interacted with 85 apps per month.

Average apps per user Retail vs Other Regions - Last 12 Months

Users in the retail sector downloaded data from cloud apps at almost the same rate as other industries, with 89% of users downloading data from cloud apps in retail versus 94% in other industries. For data uploads to cloud apps, retail averaged 61%, while other industries averaged slightly higher at 66%.

Percentage of users uploading data Retail vs Other Regions - Last 12 Months

Aplicaciones en la nube más populares

As it is in most industries, OneDrive is the most popular app in retail. Google Drive and Google Gmail are much more popular than in other industries. They are more popular than Microsoft Teams and Microsoft SharePoint, which are typically in second or third place in other industries. The messaging app WhatsApp is also significantly more popular in retail, also beating SharePoint in terms of popularity.

Overall App Popularity Retail vs Other Regions

Principales aplicaciones utilizadas para cargas

As expected, with Microsoft OneDrive being the most popular app by a large margin, it is also the app most used for uploading data, with 16% of retail users uploading data to OneDrive daily.

Apps Used for Uploads Retail vs Other Regions

Principales aplicaciones utilizadas para las descargas

OneDrive is also the most popular app for downloads in retail, with 19% of users downloading from it. As for apps used for upload, WhatsApp also has a very high usage rate of 17% for download versus 5% of other industries. This number represents more than three times the percentage of other industries.

Apps Used for Downloads Retail vs Other Regions

Abuso de las aplicaciones en la nube

Entrega de malware en la nube

The popularity of cloud malware delivery in retail pretty much followed the other industries in the past 12 months, except for the months of April, May, and June, which showed a considerably higher number of malware being delivered via cloud apps when compared to other industries. In April, for example, 70% of the malware delivered to retail were via cloud apps, 10% more than other industries. The abuse of cloud apps allows malware to fly under the radar and to evade regular security controls that rely on tools such as domain block lists or that do not inspect cloud traffic.

Malware Delivery, Cloud vs. Web, Retail vs Other Regions - Last 12 Months

Compared to other industries, the retail sector is in third place with 60% when it comes to malware sourced from the cloud, which is just 3% less than financial services in second place.

Malware Sourced from the Cloud Last 12 Months Average - Retail

Aplicaciones en la nube abusadas para la entrega de malware

Unlike the majority of other industries where OneDrive is both the most popular app adopted by users and the top app for malware downloads, retail follows a different path. Google Drive and Google Gmail–both which are more popular in retail than in other industries–took the top two spots for malware delivery. Such malware downloads typically take the form of an attacker using Google Drive, for example, to host malware and share the malware with their victims. Occasionally, a user may inadvertently upload an infected file to a shared location that results in malware spreading within an organization.

The popularity of Google Apps among users in retail makes it useful apps for attackers seeking to target a wide variety of organizations using the same app, and also makes it more likely that the malicious payloads would reach their targets.

Top Cloud Apps Abused for Malware Download Last 12 Months Retail vs Other Regions

Malware & Ransomware

Principales tipos de malware

The most common types of malware that Netskope users attempted to download from the web or cloud were Trojans, which are commonly used by attackers to gain an initial foothold and deliver other types of malware, such as infostealers, remote access Trojans, backdoors, and ransomware. Detecting and blocking Trojans can prevent malware infections that would result in other malicious payloads being installed. All other types of malware make up a comparatively small percentage of the total, which is the same as in other regions.

Most Common Types of Malware Last 12 Months Retail vs Other Regions

Principales familias de malware y ransomware

This list contains the top 10 malware and ransomware families detected by Netskope targeting users in retail in the last 12 months:

Backdoor.Zusy (a.k.a. TinyBanker) is a banking Trojan based on the source code of Zeus, aiming to steal personal information via code injection into websites.

Botnet.Andromeda (a.k.a Gamarue) is a modular botnet first introduced in 2011. The malware is known for being used to spread multiple malware families.

Downloader.Guloader is a small downloader known for delivering RATs and infostealers, such as AgentTesla, Formbook, and Remcos.

Downloader.Upatre is a downloader used to distribute other payloads such as Locky and Dridex.

Infostealer.ClipBanker is an infostealer that steals banking information among other data and is typically spread via emails and social media.

Infostealer.Khalesi (a.k.a KPOT) is an infostealer usually spread via phishing emails. The malware can collect information such as credentials, personal info, and credit card information from the infected computer.

Phishing.PhishingX is a malicious PDF file used as part of a phishing campaign to redirect victims to a phishing page.

Ransomware.Avaddon had its first known attack in February 2020. The malware attacks the Windows operating system and is often spread via malicious spam.

RAT.Remcos is a remote access Trojan that provides an extensive list of features to remotely control devices, and it’s popularly abused by many attackers.

Trojan.Valyria (a.k.a. POWERSTATS) is a family of malicious Microsoft Office Documents that contain embedded malicious VBScripts usually to deliver other malicious payloads.

Recomendaciones

This report highlighted increasing cloud adoption, including increases of data being uploaded to and downloaded from a wide variety of cloud apps. It also highlighted an increasing trend of attackers abusing a wide variety of cloud apps, especially popular enterprise apps, to deliver malware (mostly Trojans) to their victims. Netskope Threat Labs recommends organizations in the retail sector review their security posture to ensure that they are adequately protected against these trends:

Inspeccione todas las descargas HTTP y HTTPS, incluido todo el tráfico web y en la nube, para evitar que el malware se infiltre en su red. Los clientes de Netskope pueden configurar su Netskope Next Gen Secure Web Gateway con una política de protección contra amenazas que se aplica a las descargas de todas las categorías y se aplica a todos los tipos de archivos.
Ensure that high-risk file types like executables and archives are thoroughly inspected using a combination of static and dynamic analysis before being downloaded. Netskope Advanced Threat Protection customers can use a Patient Zero Prevention Policy to hold downloads until they have been fully inspected.
Configure políticas para bloquear descargas de aplicaciones e instancias que no se utilizan en su organización para reducir su superficie de riesgo a solo aquellas aplicaciones e instancias que son necesarias para el negocio.
Configure políticas para bloquear cargas a aplicaciones e instancias que no se utilizan en su organización para reducir el riesgo de exposición de datos accidental o deliberada por parte de personas internas o abuso por parte de atacantes.
Use an Intrusion Prevention System (IPS) that can identify and block malicious traffic patterns, such as command and control traffic associated with popular malware. Blocking this type of communication can prevent further damage by limiting the attacker’s ability to perform additional actions.
Use Remote Browser Isolation (RBI) technology to provide additional protection when there is a need to visit websites that fall into categories that can present higher risk, like Newly Observed and Newly Registered Domains.

Netskope Threat Labs

Netskope Threat Labs, integrado por los principales investigadores de malware y amenazas en la nube de la industria, descubre, analiza y diseña defensas contra las últimas amenazas en la nube que afectan a las empresas. Nuestros investigadores son presentadores regulares y voluntarios en las principales conferencias de seguridad, incluidas DefCon, BlackHat y RSA.

Acerca de este informe

Netskope brinda protección contra amenazas a millones de usuarios en todo el mundo. La información presentada en este informe se basa en datos de uso anónimos recopilados por la plataforma Netskope Security Cloud relacionados con un subconjunto de clientes de Netskope con autorización previa.

This report contains information about detections raised by Netskope’s Next Generation Secure Web Gateway (SWG), not considering the significance of the impact of each individual threat. Stats in this report are based on the period starting November 1, 2022 through October 30, 2023. Stats are a reflection of attacker tactics, user behavior, and organization policy.

Informes de laboratorios de amenazas

En el informe mensual de Netskope Threat Labs, encontrará los 5 principales dominios maliciosos, malware y aplicaciones que la plataforma Netskope Security Cloud ha bloqueado, además de publicaciones recientes y un resumen de las amenazas.

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