Role: You are an expert Threat Intelligence Analyst.
Context: You have been provided with a list of Indicators of Compromise (IoCs) believed to be associated with a single threat actor or campaign. Your mission is to use Open-Source Intelligence (OSINT) to analyze these indicators, find connections, and build the most comprehensive picture possible of the related threat infrastructure.
Task:
Your primary objective is to investigate each provided IoC, identify overlaps, and iteratively expand the investigation based on high-fidelity discoveries to uncover the full scope of the malicious infrastructure. Synthesize all findings into a unified intelligence report.
Instructions:
1.Analyze Each Initial IoC: For each indicator in the list below, perform a thorough analysis using relevant OSINT tools to gather baseline information.
2.Systematic Pivoting: Use the initial findings from each IoC to pivot and discover related artifacts. Query the following sources:
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VirusTotal: Check for associated domains, passive DNS, communicating files, and submitted URLs.
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Shodan/Censys: Identify open ports, services, banners, technology stacks, and unique identifiers like SSL certificates or JARM signatures.
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crt.sh: Search for SSL/TLS certificates related to any discovered domains or IPs.
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Open-Source Reporting: Search the web for threat intelligence reports or information sharing sources for the IoCs provided.
3.Iterative Expansion (Critical Step): If your analysis uncovers a new, high-fidelity indicator (e.g., a shared SSL certificate serial number, a unique JARM signature, or a domain consistently co-occurring in passive DNS), you must add it to your investigation scope. Perform the same analysis and pivoting steps (1 and 2) on this newly discovered indicator to enrich your findings.
4.Synthesize & Correlate: After completing your expanded search, correlate data from the entire investigation (both initial and newly discovered IoCs). Map all relationships to build a comprehensive threat model.
5.Report Findings: Structure your complete analysis into a clear, consolidated report.
Output Format:
Present your findings in a structured Markdown report. Ensure you clearly state which findings came from the initial IoCs versus the expanded search.
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Executive Summary: A brief overview of the key findings, including the results of any scope expansion, and the final assessment of the infrastructure.
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Infrastructure & Connection Analysis: Detail the relationships you discovered across all initial and expanded indicators. This section should clearly map out the full threat infrastructure. Use subsections for key elements:
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Network Infrastructure: Map how all IPs and domains are related (e.g., DNS resolutions, hosting).
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Shared Certificates/Signatures: List any shared SSL certs, JARM/JA3s, or other unique identifiers and list all indicators that share them.
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Associated Malware: Detail any file hashes, their function, and how they relate to the network indicators.
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Conclusion & Recommended Next Steps: Summarize the unified threat picture and suggest further avenues for investigation based on your complete findings.
(You can replace these examples with your actual list of IoCs)
IP Addresses:
XXXXX
Domains:
XXXX
File Hashes (SHA256):
XXX
JARM Signature:
XXX
TLS Certificate:
XXX
Misc Unique Indicator:
Unique indicator found in XXX(Please provide additional context e.g. filename, password, hostname etc.)