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

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DETECTION OVERVIEW

New SMB Executable File Transfer Activity

Risk Factors

When a server receives an unusual file type, particularly an executable file, there is a risk that the file is malware. Once uploaded to a file share, malware can easily propagate to other devices on your network.

The system might change the risk score for this detection.

Category

Lateral Movement
Detection diagram
Next in Lateral Movement: New Scheduled Task Activity (ATSVC)

Attack Background

After an attacker compromises a workstation, the attacker searches for new targets on the network. Ideally, the compromised workstation has credentials that provide the attacker with administrative access to a new target. With administrative access, the attacker can transfer an executable file to a default file share (such as ADMIN$ or C$) on the target. After the malicious payload from the file runs (through the actions of the attacker or the victim), the attacker can move laterally to the newly compromised device to conduct more attacks.

Mitigation Options

Restrict file share access to only authorized IP addresses and users

Disable anonymous (null) file share access

Restrict file share authentication with a password

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

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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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