ExtraHop named a Leader in the 2025 Forrester Wave™: Network Analysis And Visibility Solutions

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DETECTION OVERVIEW

Unusual Download from S3 Bucket

Risk Factors

Network environments that support a hybrid architecture of Amazon S3 (Simple Storage Service) and on-premise servers for data storage are common. An attacker with knowledge of Amazon S3 can download data from an S3 bucket to a compromised device for data staging. The business impact of this type of exfiltration is high because the attacker can steal sensitive data, which can lead to further attacks on your network.

The system might change the risk score for this detection.

Category

Actions on Objective
Detection diagram
Next in Actions on Objective: Unusual File Activity (Data Entropy)

Attack Background

An attacker that downloads sensitive data from an S3 bucket can stage data on a compromised device before exfiltration. A benefit of data staging is that the attacker can minimize the number of external connections needed to transfer all of the data, helping to evade detection.

Mitigation Options

Track suspicious activity by implementing strict audit controls on important documents
Implement strict rules for outbound traffic on devices that contain valuable data

MITRE ATT&CK ID

Associated content

Announcing The Forrester Wave™: Network Analysis And Visibility Solutions, Q4 2025

Network analysis and visibility solutions remain underrepresented in enterprises. Find out why in this preview of a new Wave report.

Report

ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response — ExtraHop

ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response

News

Detections

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Docs

The 2025 ExtraHop Global Threat Landscape Report: The Alarming Reality of Threat Actor Dwell Time and Deeper Network Access — ExtraHop

This analysis exposes the critical link between an organization's lack of internal visibility and the escalating cost of compromise, demanding an urgent re-evaluation of how core business assets are protected.

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ExtraHop RevealX MITRE ATT&CK Coverage 2024 — ExtraHop

Learn why you need to be wary of the claims certain network detection and response providers make about their coverage against the MITRE ATT&CK framework.

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MITRE ATT&CK - Network Detection & Response with RevealX — ExtraHop

Learn how NDR from RevealX helps security teams detect and investigate more adversary TTPs in the MITRE ATT&CK framework than rule-based tools.

External
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