SASE Week 2023 On-Demand! Explore sessions.

  • Security Service Edge Products

    Protect against advanced and cloud-enabled threats and safeguard data across all vectors.

  • Borderless SD-WAN

    Confidently provide secure, high-performance access to every remote user, device, site, and cloud.

The platform of the future is Netskope

Intelligent Security Service Edge (SSE), Cloud Access Security Broker (CASB), Cloud Firewall, Next Generation Secure Web Gateway (SWG), and Private Access for ZTNA built natively into a single solution to help every business on its journey to Secure Access Service Edge (SASE) architecture.

Go to Products Overview
Netskope video
Borderless SD-WAN: Ushering in the New Era of Borderless Enterprise

Netskope Borderless SD-WAN offers an architecture that converges zero trust principles and assured application performance to provide unprecedented secure, high-performance connectivity for every site, cloud, remote user, and IoT device.

Read the article
Borderless SD-WAN
  • NewEdge

    NewEdge is the world’s largest, highest-performing security private cloud.

  • Cloud Security Platform

    Unrivaled visibility and real-time data and threat protection on the world's largest security private cloud.

  • Technology Partners & Integrations

    Netskope partners with the strongest companies in enterprise technology.

Embrace a Secure Access Service Edge (SASE) architecture

Netskope NewEdge is the world’s largest, highest-performing security private cloud and provides customers with unparalleled service coverage, performance and resilience.

Learn about NewEdge
NewEdge
Your Network of Tomorrow

Plan your path toward a faster, more secure, and more resilient network designed for the applications and users that you support.

Get the white paper
Your Network of Tomorrow
Netskope Cloud Exchange

The Netskope Cloud Exchange (CE) provides customers with powerful integration tools to leverage investments across their security posture.

Learn about Cloud Exchange
Netskope video
Make the move to market-leading cloud security services with minimal latency and high reliability.

Learn about NewEdge
Lighted highway through mountainside switchbacks
Safely enable the use of generative AI applications with application access control, real-time user coaching, and best-in-class data protection.

Learn how we secure generative AI use
Safely Enable ChatGPT and Generative AI
Zero trust solutions for SSE and SASE deployments

Learn about Zero Trust
Boat driving through open sea
Netskope enables a safe, cloud-smart, and fast journey to adopt cloud services, apps, and public cloud infrastructure.

Learn about Industry Solutions
Wind turbines along cliffside
  • Resources

    Learn more about how Netskope can help you secure your journey to the cloud.

  • Blog

    Learn how Netskope enables security and networking transformation through security service edge (SSE).

  • Events & Workshops

    Stay ahead of the latest security trends and connect with your peers.

  • Security Defined

    Everything you need to know in our cybersecurity encyclopedia.

Security Visionaries Podcast

Unveiling the Under-reported Aspects of AI
Emily Wearmouth sits down with Neil Thacker, EMEA CISO, Yihua Liao, Head of Netskope AI Labs, and Suzanne Oliver, Director of IP Strategy at Scintilla, to discuss the topics in the realm of AI that they each wish people were discussing more.

Play the podcast
Unveiling the Under-reported Aspects of AI Social card
Latest Blogs

How Netskope can enable the Zero Trust and SASE journey through security service edge (SSE) capabilities.

Read the blog
Sunrise and cloudy sky
SASE Week 2023: Your SASE journey starts now!

Replay sessions from the fourth annual SASE Week.

Explore sessions
SASE Week 2023
What is Security Service Edge?

Explore the security side of SASE, the future of network and protection in the cloud.

Learn about Security Service Edge
Four-way roundabout
  • Our Customers

    Netskope serves more than 2,000 customers worldwide including more than 25 of the Fortune 100

  • Customer Solutions

    We are here for you and with you every step of the way, ensuring your success with Netskope.

  • Netskope Community

    Learn from other network, data, and security professionals.

  • Training and Certification

    Netskope training will help you become a cloud security expert.

We help our customers to be Ready for Anything

See our Customers
Woman smiling with glasses looking out window
Netskope’s talented and experienced Professional Services team provides a prescriptive approach to your successful implementation.

Learn about Professional Services
Netskope Professional Services
The Netskope Community can help you and your team get more value out of products and practices.

Go to the Netskope Community
The Netskope Community
Secure your digital transformation journey and make the most of your cloud, web, and private applications with Netskope training.

Learn about Training and Certifications
Group of young professionals working
  • Company

    We help you stay ahead of cloud, data, and network security challenges.

  • Why Netskope

    Cloud transformation and work from anywhere have changed how security needs to work.

  • Leadership

    Our leadership team is fiercely committed to doing everything it takes to make our customers successful.

  • Partners

    We partner with security leaders to help you secure your journey to the cloud.

Supporting sustainability through data security

Netskope is proud to participate in Vision 2045: an initiative aimed to raise awareness on private industry’s role in sustainability.

Find out more
Supporting Sustainability Through Data Security
Highest in Execution. Furthest in Vision.

Netskope recognized as a Leader in the 2023 Gartner® Magic Quadrant™ for Security Service Edge.

Get the report
Netskope recognized as a Leader in the 2023 Gartner® Magic Quadrant™ for Security Service Edge.
Thinkers, builders, dreamers, innovators. Together, we deliver cutting-edge cloud security solutions to help our customers protect their data and people.

Meet our team
Group of hikers scaling a snowy mountain
Netskope’s partner-centric go-to-market strategy enables our partners to maximize their growth and profitability while transforming enterprise security.

Learn about Netskope Partners
Group of diverse young professionals smiling

CloudFanta Pops with the Cloud using SugarSync

Oct 18 2016
Tags
Cloud Best Practices
Cloud Malware
Cloud Security
Netskope Threat Research Labs
Tools and Tips

Netskope Threat Research Labs has discovered a new malware campaign, which we suspect stole more than 26,000 email credentials and also monitors online banking activities. The malware, which we have named “CloudFanta,” has been in operation since July 2016 and primarily targets Brazilian users.

This blog provides a preliminary overview of CloudFanta while we wait on the command and control hosts and cloud vendor to take down the malware and servers containing the email credentials.

Similar to the CloudSquirrel malware campaign that we uncovered in July 2016, CloudFanta arrives as an attachment or a link in a spearphishing email that lures the victim to execute the file or click the link. We observed the CloudFanta malware using the SugarSync cloud storage app for delivering a JAR file that functions as a downloader. The downloader JAR file again uses SugarSync for downloading Dynamic Linked Library (DLL) files with a “.png” extension. These DLL files, which are later renamed to the extension “.twerk,” are responsible for stealing the victim’s email credentials, sending malicious emails on behalf of the victim, and also for monitoring victims’ online banking activities.

Summary Observations

A high-level visual depiction of the CloudFanta malware infection is shown in Figure 1. The CloudFanta malware campaign highlighted the use of the cloud storage app, SugarSync for hosting drive-by-download files. Using tactics like the delivery of DLL files with the “.png” extension and the use of SSL/HTTPS communication with SugarSync allow CloudFanta to stay under the radar of a number of traditional, network-based security solutions. This clearly demonstrates the effective use of cloud services for hosting malware by malicious threat actors. The use of cloud services makes the delivery of malware very easy, effectively making it easier to compromise and gain access to users’ data. This clearly signifies an urgent need for enterprises to employ a multi-layered security approach with a strong focus on cloud services.

fig1

Figure 1: Visual depiction of CloudFanta malware infection

Netskope Detection and Remediation

The visual depiction of protection from CloudFanta malware with Netskope Threat Protection is shown in Figure 3. Netskope Threat Protection detects the files retrieved from the JAR downloader as Backdoor.Generckd.3549404, Backdoor.Generckd.3540808, Backdoor.Generckd.18673650, Backdoor.Generckd.3542220 and Gen:Variant.Symm.60013. Customers with the Netskope Active Platform and Netskope Introspection can set the respective malware and threat protection policies to detect and remediate against this malware. In addition to the above, Netskope Active platform customers can also block the DLL files with “.png” extension from being downloaded using a custom rule as shown in Figure 2.

fig2

Figure 2: Block policy alert for portable executable files with “.png” extensions
fig3

Figure 3: Visual depiction of protection from CloudFanta malware with Netskope Threat Protection

General Recommendations

Netskope recommends the following to combat cloud malware and threats:

  • Detect and remediate all malware in sanctioned cloud services using a threat-aware solution like Netskope Introspection.
  • Detect and remediate all malware being downloaded from unsanctioned cloud services using a threat-aware solution like the Netskope Active Platform.
  • Actively track usage of unsanctioned cloud services and enforce DLP policies to control files and data entering and leaving your corporate environment.
  • Create a security policy to block portable executable files with content type “image/png.”
  • Regularly back up and turn on versioning for critical content in cloud services.
  • Enable “view known file extension” options in Windows and avoid executing any file with dual extensions unless you are sure they are benign.
  • Warn users to avoid opening untrusted attachments regardless of their extension or file name.
  • Enable two-factor authentication for email and banking accounts as a safety measure to prevent attackers from accessing the email account even if they know the password.
  • Keep systems and antivirus updated with the latest releases and patches.

We will be publishing a detailed technical blog on CloudFanta soon.

Stay informed!

Subscribe for the latest from the Netskope Blog