135 lines
5.3 KiB
Python
135 lines
5.3 KiB
Python
from timesketch.lib.analyzers import interface
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from timesketch.lib.analyzers import manager
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import requests
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import json
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from datetime import datetime
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import ipaddress
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import os
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class ShodanEnrichmentAnalyzer(interface.BaseAnalyzer):
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"""Analyzer to enrich IP addresses with Shodan data."""
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NAME = 'shodan_enrichment'
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DISPLAY_NAME = 'Shodan IP Enrichment'
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DESCRIPTION = 'Enriches source IP addresses with Shodan historical data'
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def __init__(self, index_name, sketch_id, timeline_id=None):
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super().__init__(index_name, sketch_id, timeline_id)
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# Get API key from environment variables
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self.shodan_api_key = os.environ.get('SHODAN_API_KEY', '')
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self.max_time_diff_hours = 24
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self.rate_limit_delay = 1
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if not self.shodan_api_key:
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self.logger.error("Shodan API key not configured in environment variables")
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def run(self):
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"""Main analyzer logic."""
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if not self.shodan_api_key:
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return "Shodan API key not configured"
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query = {
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'query': {
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'bool': {
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'must': [
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{'exists': {'field': 'source_ip'}},
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{'bool': {'must_not': [{'term': {'__ts_analyzer_shodan_enrichment': True}}]}}
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]
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}
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}
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}
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events = self.event_stream(query_dsl=query, return_fields=['source_ip', 'timestamp'])
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processed_count = 0
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for event in events:
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source_ip = event.source.get('source_ip')
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timestamp = event.source.get('timestamp')
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if source_ip and self._is_public_ip(source_ip):
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self.logger.info(f"Processing IP: {source_ip}")
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shodan_data = self._get_shodan_data(source_ip)
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if shodan_data:
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self._enrich_event(event, shodan_data)
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processed_count += 1
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# Rate limiting
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import time
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time.sleep(self.rate_limit_delay)
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return f"Processed {processed_count} events with Shodan data"
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def _get_shodan_data(self, ip):
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"""Fetch Shodan data for IP."""
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try:
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url = f"https://api.shodan.io/shodan/host/{ip}"
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params = {
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'key': self.shodan_api_key,
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'history': 'true'
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}
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self.logger.info(f"Querying Shodan API for IP: {ip}")
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response = requests.get(url, params=params, timeout=10)
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if response.status_code == 200:
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self.logger.info(f"Successfully retrieved Shodan data for {ip}")
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return response.json()
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elif response.status_code == 404:
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self.logger.debug(f'No Shodan data found for {ip}')
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return None
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else:
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self.logger.warning(f'Shodan API error for {ip}: {response.status_code} - {response.text}')
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return None
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except Exception as e:
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self.logger.warning(f'Error fetching Shodan data for {ip}: {e}')
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return None
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def _enrich_event(self, event, shodan_data):
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"""Add Shodan data to the event."""
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try:
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enrichment = {
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'shodan_ports': shodan_data.get('ports', []),
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'shodan_org': shodan_data.get('org', ''),
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'shodan_isp': shodan_data.get('isp', ''),
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'shodan_country': shodan_data.get('location', {}).get('country_name', ''),
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'shodan_city': shodan_data.get('location', {}).get('city', ''),
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'shodan_hostnames': shodan_data.get('hostnames', []),
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'shodan_last_update': shodan_data.get('last_update', ''),
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'__ts_analyzer_shodan_enrichment': True
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}
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# Add service information from latest scan
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if shodan_data.get('data'):
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services = []
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for service in shodan_data.get('data', [])[:5]: # Limit to first 5 services
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service_info = f"Port {service.get('port', 'Unknown')}/{service.get('transport', 'tcp')}"
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if service.get('product'):
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service_info += f" - {service.get('product', '')}"
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if service.get('version'):
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service_info += f" {service.get('version', '')}"
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services.append(service_info)
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enrichment['shodan_services'] = services
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event.add_attributes(enrichment)
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event.add_tags(['shodan-enriched'])
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event.commit()
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self.logger.info(f"Successfully enriched event with Shodan data")
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except Exception as e:
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self.logger.error(f"Error enriching event: {e}")
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def _is_public_ip(self, ip):
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"""Check if IP is public (not RFC1918 private ranges)."""
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try:
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ip_obj = ipaddress.ip_address(ip)
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return ip_obj.is_global
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except (ValueError, ipaddress.AddressValueError):
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self.logger.debug(f"Invalid IP address format: {ip}")
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return False
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# Register the analyzer
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manager.AnalysisManager.register_analyzer(ShodanEnrichmentAnalyzer) |