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

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DETECTION OVERVIEW

Internal Dharma Ransomware File Transfer

Risk Factors

Dharma is a popular ransomware family. Deploying Dharma requires skill that depends on the source and destination. The impact of ransomware on a business can be devastating, especially if sensitive or business-critical data is lost through encryption, or costly if a high ransom is paid.

The system might change the risk score for this detection.

Category

Lateral Movement
Detection diagram
Next in Lateral Movement: Internal EICAR Test File Transfer

Attack Background

Dharma encrypts files and demands payment for the decryption key, similar to other ransomware families. Attackers often transfer malware between compromised devices to support lateral movement during an attack campaign.

Mitigation Options

Monitor and investigate unusual activity to minimize potential damage

Enforce security zones by implementing network segmentation and firewall policies to limit how devices can communicate

Configure host-based security tools to quarantine the host or otherwise prevent the file from executing

MITRE ATT&CK ID

Associated content

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Detections

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

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