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

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DETECTION OVERVIEW

Increase in Internal FTP File Transfers

Risk Factors

It is both relatively easy and common for attackers to gain access to network file shares to attempt data staging, which is the process of collecting and preparing data for exfiltration. Depending on the sensitivity of the files in the accessed file share, the impact can be devastating if important, proprietary, or customer data is leaked.

The system might change the risk score for this detection.

Category

Actions on Objective
Detection diagram
Next in Actions on Objective: Increase in Internal NFS File Transfers

Attack Background

After an attacker has compromised a workstation and obtained credentials, they can proceed with malicious activity that might be overlooked as normal file share activity. The primary difference is that the attacker is looking for sensitive or valuable information that they can leverage for malicious objectives, such as in a data breach.

Mitigation Options

Disable FTP unless required

Restrict file share access to only authorized IP addresses and hosts

Disable anonymous authentication on FTP servers unless required

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

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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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