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

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DETECTION OVERVIEW

External EICAR Test File Transfer

Risk Factors

The European Institute for Computer Antivirus Research (EICAR) test file is an industry standard for validating security controls. This file is designed for testing purposes only and presents a low risk to network environments.

Category

Command-and-Control
Detection diagram
Next in Command-and-Control: HTTP Tunnel

Attack Background

The EICAR file is designed to test the capabilities of security controls, such as antivirus software. To initiate the test, clients upload or download the EICAR test file from an external endpoint over a common protocol such as HTTP.

Unexpected file transfers from an external endpoint should be investigated. Attackers often transfer malware from an external system into a compromised environment through a command-and-control channel or common protocol.

Mitigation Options

Monitor and investigate unusual activity to minimize potential damage
Filter ingress traffic at the network perimeter

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

Visit this resource for more information.

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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