AnalysisPublished 8 Jan 2026

Analysis using Gephi with DShield Sensor Data, (Wed, Jan 7th)

Source SANS ISC Handlers Diary

Description

I&&#x23;x26;&#x23;39;m always looking for new ways of manipulating the data captured by my DShield sensor [1]. This time I used Gephi [2] and Graphiz [3] a popular and powerful tool for visualizing and exploring relationships between nodes, to examine the relationship between the source IP, filename and which sensor got a copy of the file. I queried the past 30 days of data stored in my ELK [4] database in Kibana using ES|QL [5][6] to query and export the data and import the result into Gephi. 

Impact

The impact of this analytical approach for European organizations is primarily in enhancing threat intelligence and situational awareness rather than representing a direct security threat. By visualizing relationships between malware samples, source IPs, and affected sensors, security teams can better understand attack campaigns, identify persistent threat actors, and prioritize defensive measures. This can lead to faster detection of malware infections and improved incident response. However, since no new vulnerability or exploit is described, there is no immediate risk of compromise from this information alone. The indirect benefits include improved network monitoring, threat hunting, and the ability to correlate disparate data sources to uncover hidden attack patterns. Organizations that integrate such analytical methods into their security operations can reduce dwell time of attackers and mitigate malware spread more effectively. Conversely, failure to leverage such intelligence could result in slower detection and response to malware campaigns targeting European networks.

Defensive guidance

1. Integrate honeypot and sensor data into existing Security Information and Event Management (SIEM) systems to enrich threat intelligence. 2. Employ advanced data visualization tools like Gephi and Graphviz to analyze relationships between IP addresses, malware samples, and affected hosts. 3. Regularly update and tune ELK stack queries to filter out known benign activity and focus on suspicious or unknown events. 4. Collaborate with threat intelligence sharing communities such as DShield and SANS ISC to stay informed about emerging malware campaigns. 5. Implement network segmentation and strict access controls to limit malware propagation identified through such analyses. 6. Conduct proactive threat hunting exercises using the insights gained from visualized data to identify compromised systems early. 7. Train security analysts in the use of ES|QL and visualization tools to maximize the value of collected data. 8. Maintain updated endpoint protection and malware detection capabilities to respond to identified malware families like Redtail. 9. Automate alerting based on patterns discovered through these analyses to accelerate incident response. 10. Ensure continuous monitoring of network traffic and logs to detect anomalous activities correlating with known malicious IPs or file hashes.

Summary

The provided information describes an analytical approach using Gephi and Graphviz to visualize and explore relationships within data collected by DShield sensors, which are part of a global network of honeypots capturing malicious activity. The analyst queries data stored in an ELK (Elasticsearch, Logstash, Kibana) stack using ES|QL to extract records of suspicious or unknown events, specifically filtering out known researchers and focusing on events tagged as "no match." The data includes source IP addresses, filenames, and file hashes associated with malware activity over a 30-day period. Visualization with Gephi reveals clusters of related IPs and malware files, including a grouping associated with Redtail malware, highlighting repeated uploads from specific IP addresses. This method enhances understanding of malware distribution patterns and relationships between infected hosts and malware samples. However, the content does not describe a new vulnerability or exploit but rather a technique for threat data analysis. The mention of 'rce' (remote code execution) in tags appears unrelated to the actual content, which focuses on data visualization and threat intelligence. No direct exploitation or vulnerability details are provided, and no patches or known exploits are referenced. The analysis demonstrates how security researchers can leverage open-source tools and honeypot data to improve malware detection and response capabilities.

References

isc.sans.edu/diary/rss/32608 (opens in a new tab)

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Description

AI analysisMachine-generated, updated 8 Jan 2026, 00:24 UTC

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