progress
This commit is contained in:
overcuriousity
parent
bff763e4bb
commit
f342760ff0
139
misp_analyzer.py
139
misp_analyzer.py
@ -32,7 +32,8 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
self._attr = kwargs.get("attr")
|
||||
self._timesketch_attr = kwargs.get("timesketch_attr")
|
||||
|
||||
self.include_community = kwargs.get("include_community", False)
|
||||
# Simple configuration for reliability
|
||||
self.include_community = kwargs.get("include_community", False) # Default to false for reliability
|
||||
self.chunk_size = kwargs.get("chunk_size", 1000) # Process in chunks
|
||||
self.max_retries = kwargs.get("max_retries", 2) # Minimal retries
|
||||
self.request_delay = kwargs.get("request_delay", 0.5) # Small delay between requests
|
||||
@ -51,46 +52,62 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
'api_timeouts': 0,
|
||||
'events_marked': 0,
|
||||
'community_hits': 0,
|
||||
'own_org_hits': 0
|
||||
'own_org_hits': 0,
|
||||
'total_correlations': 0,
|
||||
'multi_event_correlations': 0
|
||||
}
|
||||
|
||||
@staticmethod
|
||||
def get_kwargs():
|
||||
"""Get kwargs for the analyzer - keeping original working structure."""
|
||||
to_query = [
|
||||
{
|
||||
"query_string": "md5_hash:*",
|
||||
"attr": "md5",
|
||||
"timesketch_attr": "md5_hash",
|
||||
"include_community": True,
|
||||
"include_community": False, # Start with own org only
|
||||
},
|
||||
{
|
||||
"query_string": "sha1_hash:*",
|
||||
"attr": "sha1",
|
||||
"timesketch_attr": "sha1_hash",
|
||||
"include_community": True,
|
||||
"include_community": False,
|
||||
},
|
||||
{
|
||||
"query_string": "sha256_hash:*",
|
||||
"attr": "sha256",
|
||||
"timesketch_attr": "sha256_hash",
|
||||
"include_community": True,
|
||||
"include_community": False,
|
||||
},
|
||||
{
|
||||
"query_string": "filename:*",
|
||||
"attr": "filename",
|
||||
"timesketch_attr": "filename",
|
||||
"include_community": True,
|
||||
"include_community": False,
|
||||
},
|
||||
{
|
||||
"query_string": "message:*",
|
||||
"attr": "ip-src",
|
||||
"timesketch_attr": "message",
|
||||
"include_community": False,
|
||||
},
|
||||
{
|
||||
"query_string": "message:*",
|
||||
"attr": "ip-dst",
|
||||
"timesketch_attr": "message",
|
||||
"include_community": False,
|
||||
},
|
||||
{
|
||||
"query_string": "source_ip:*",
|
||||
"attr": "ip-src",
|
||||
"timesketch_attr": "source_ip",
|
||||
"include_community": True,
|
||||
"include_community": False,
|
||||
},
|
||||
]
|
||||
return to_query
|
||||
|
||||
def _is_valid_ip(self, ip_str):
|
||||
"""Simple IP validation - keeping original working version."""
|
||||
try:
|
||||
import ipaddress
|
||||
ip_str = ip_str.strip()
|
||||
@ -133,7 +150,7 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
"includeContext": True, # Include context information
|
||||
}
|
||||
|
||||
# community search - include ALL distribution levels
|
||||
# Enhanced community search - include ALL distribution levels
|
||||
if self.include_community:
|
||||
payload.update({
|
||||
"distribution": [0, 1, 2, 3, 5], # Own, community, connected, all, inherit
|
||||
@ -179,7 +196,7 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
self.stats['api_timeouts'] += 1
|
||||
|
||||
if retry_count < self.max_retries:
|
||||
wait_time = (retry_count + 1) * 2 # backoff: 2s, 4s
|
||||
wait_time = (retry_count + 1) * 2 # Simple backoff: 2s, 4s
|
||||
logger.warning(f"Timeout for {value}, retrying in {wait_time}s (attempt {retry_count + 1})")
|
||||
time.sleep(wait_time)
|
||||
return self.query_misp_single(value, attr, retry_count + 1)
|
||||
@ -193,41 +210,64 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
return []
|
||||
|
||||
def mark_event(self, event, result, attr):
|
||||
"""Mark event with MISP intelligence - enhanced with community info."""
|
||||
"""Mark event with MISP intelligence - enhanced with correlating events."""
|
||||
try:
|
||||
if attr.startswith("ip-"):
|
||||
msg = "MISP: Malicious IP"
|
||||
else:
|
||||
msg = "MISP: Known indicator"
|
||||
|
||||
# Extract event and organization information
|
||||
event_info = result[0].get("Event", {}).get("info", "Unknown")
|
||||
org_info = result[0].get("Event", {}).get("Orgc", {}).get("name", "Unknown")
|
||||
# Collect unique correlating events and organizations
|
||||
correlating_events = []
|
||||
orgs = set()
|
||||
event_ids = set()
|
||||
|
||||
msg += f" - {event_info}"
|
||||
for res in result:
|
||||
event_info = res.get("Event", {})
|
||||
event_id = event_info.get("id")
|
||||
event_desc = event_info.get("info", "Unknown")
|
||||
org_name = event_info.get("Orgc", {}).get("name", "Unknown")
|
||||
|
||||
# Avoid duplicate events (same ID)
|
||||
if event_id and event_id not in event_ids:
|
||||
event_ids.add(event_id)
|
||||
# Truncate long descriptions
|
||||
short_desc = event_desc[:60] + "..." if len(event_desc) > 60 else event_desc
|
||||
correlating_events.append(short_desc)
|
||||
|
||||
if org_name != "Unknown":
|
||||
orgs.add(org_name)
|
||||
|
||||
if len(result) > 1:
|
||||
msg += f" (+{len(result)-1} more)"
|
||||
# Build comprehensive message with correlating events
|
||||
if len(correlating_events) == 1:
|
||||
msg += f" | Event: {correlating_events[0]}"
|
||||
elif len(correlating_events) > 1:
|
||||
# Show first 2 correlating events, then count
|
||||
msg += f" | Events: {correlating_events[0]}"
|
||||
if len(correlating_events) > 1:
|
||||
msg += f" + {correlating_events[1]}"
|
||||
if len(correlating_events) > 2:
|
||||
msg += f" + {len(correlating_events)-2} more"
|
||||
|
||||
# Add organization information for community awareness
|
||||
if self.include_community and org_info != "Unknown":
|
||||
# Collect unique organizations
|
||||
orgs = set()
|
||||
for res in result[:3]:
|
||||
org = res.get("Event", {}).get("Orgc", {}).get("name", "Unknown")
|
||||
if org != "Unknown":
|
||||
orgs.add(org)
|
||||
|
||||
if self.include_community and orgs:
|
||||
if len(orgs) > 1:
|
||||
msg += f" | Sources: {', '.join(list(orgs)[:2])}"
|
||||
if len(orgs) > 2:
|
||||
msg += f" +{len(orgs)-2} more"
|
||||
elif orgs:
|
||||
else:
|
||||
msg += f" | Source: {list(orgs)[0]}"
|
||||
|
||||
# Add correlation count for context
|
||||
if len(result) > 1:
|
||||
msg += f" | {len(result)} correlations"
|
||||
|
||||
# Add appropriate tags including correlation info
|
||||
tags = [f"MISP-{attr}", "threat-intel"]
|
||||
if self.include_community:
|
||||
tags.append("community-intel")
|
||||
if len(correlating_events) > 1:
|
||||
tags.append("multi-event-correlation")
|
||||
|
||||
event.add_comment(msg)
|
||||
event.add_tags(tags)
|
||||
@ -235,6 +275,9 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
|
||||
self.stats['events_marked'] += 1
|
||||
|
||||
# Log detailed correlation info for debugging
|
||||
logger.info(f"Marked event with {len(correlating_events)} correlating MISP events: {', '.join(correlating_events[:3])}")
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"Error marking event: {e}")
|
||||
|
||||
@ -252,7 +295,7 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
|
||||
indicators = []
|
||||
|
||||
# Extract based on attribute type
|
||||
# Extract based on attribute type - SAME AS ORIGINAL
|
||||
if attr.startswith("ip-") and timesketch_attr == "message":
|
||||
ip_matches = self.ip_pattern.findall(str(loc))
|
||||
indicators = [ip for ip in ip_matches if self._is_valid_ip(ip)]
|
||||
@ -307,21 +350,38 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
if result:
|
||||
self.result_dict[f"{attr}:{indicator}"] = result
|
||||
|
||||
# Track community vs own org hits
|
||||
# Track correlation statistics
|
||||
self.stats['total_correlations'] += len(result)
|
||||
unique_events = set()
|
||||
for res in result:
|
||||
event_id = res.get("Event", {}).get("id")
|
||||
if event_id:
|
||||
unique_events.add(event_id)
|
||||
|
||||
if len(unique_events) > 1:
|
||||
self.stats['multi_event_correlations'] += 1
|
||||
|
||||
# Track community vs own org hits with correlation details
|
||||
orgs = set()
|
||||
events = set()
|
||||
for res in result:
|
||||
org = res.get("Event", {}).get("Orgc", {}).get("name", "Unknown")
|
||||
event_info = res.get("Event", {}).get("info", "Unknown")[:50]
|
||||
orgs.add(org)
|
||||
events.add(event_info)
|
||||
|
||||
if len(orgs) > 1 or any(org not in ["Unknown", "Your Organization"] for org in orgs):
|
||||
self.stats['community_hits'] += 1
|
||||
logger.info(f"Community MISP hit: {indicator} ({len(result)} matches from {', '.join(list(orgs)[:3])})")
|
||||
logger.info(f"Community MISP hit: {indicator} | {len(result)} correlations | "
|
||||
f"Events: {', '.join(list(events)[:2])} | Sources: {', '.join(list(orgs)[:3])}")
|
||||
else:
|
||||
self.stats['own_org_hits'] += 1
|
||||
logger.info(f"Own org MISP hit: {indicator} ({len(result)} matches)")
|
||||
logger.info(f"Own org MISP hit: {indicator} | {len(result)} correlations | "
|
||||
f"Events: {', '.join(list(events)[:2])}")
|
||||
|
||||
self.processed_indicators.add(indicator)
|
||||
|
||||
# Small delay to be nice to MISP server
|
||||
time.sleep(self.request_delay)
|
||||
|
||||
# Mark events that have matches
|
||||
@ -333,9 +393,10 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
return "Community search disabled"
|
||||
|
||||
try:
|
||||
# Test with a known community indicator (if available)
|
||||
test_payload = {
|
||||
"returnFormat": "json",
|
||||
"distribution": [1, 2, 3],
|
||||
"distribution": [1, 2, 3], # Community levels only
|
||||
"limit": 1,
|
||||
"enforceWarninglist": False,
|
||||
}
|
||||
@ -423,6 +484,16 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
analyzer_name=self.NAME,
|
||||
query_string='tag:"MISP-*" OR tag:"threat-intel"',
|
||||
)
|
||||
|
||||
# Create additional view for multi-event correlations
|
||||
correlation_count = sum(1 for key, results in self.result_dict.items()
|
||||
if results and len(results) > 1)
|
||||
if correlation_count > 0:
|
||||
self.sketch.add_view(
|
||||
view_name="MISP Multi-Event Correlations",
|
||||
analyzer_name=self.NAME,
|
||||
query_string='tag:"multi-event-correlation"',
|
||||
)
|
||||
|
||||
def run(self):
|
||||
"""Entry point for the analyzer."""
|
||||
@ -443,7 +514,7 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
success_rate = ((self.stats['api_calls'] - self.stats['api_timeouts']) /
|
||||
max(1, self.stats['api_calls']) * 100)
|
||||
|
||||
# Enhanced results with community statistics
|
||||
# Enhanced results with community and correlation statistics
|
||||
result = (f"[{self._timesketch_attr}] MISP Analysis Complete: "
|
||||
f"{self.stats['events_marked']}/{self.stats['events_processed']} events marked | "
|
||||
f"{self.stats['api_calls']} API calls ({success_rate:.1f}% success) | ")
|
||||
@ -451,7 +522,11 @@ class MispAnalyzer(interface.BaseAnalyzer):
|
||||
if self.include_community:
|
||||
result += f"Community hits: {self.stats['community_hits']}, Own org: {self.stats['own_org_hits']} | "
|
||||
|
||||
result += f"{elapsed:.0f}s"
|
||||
result += f"Total correlations: {self.stats['total_correlations']}"
|
||||
if self.stats['multi_event_correlations'] > 0:
|
||||
result += f", Multi-event: {self.stats['multi_event_correlations']}"
|
||||
|
||||
result += f" | {elapsed:.0f}s"
|
||||
|
||||
logger.info(result)
|
||||
return result
|
||||
|
||||
Reference in New Issue
Block a user