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stix-taxii-feed-intgrt STIX (Structured Threat Information eXpression) and TAXII (Trusted Automated eXchange of Intelligence Information) are OASIS open standards for representing and transporting cyber threat intelligence.
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8 archivos name stix-taxii-feed-intgrt description STIX (Structured Threat Information eXpression) and TAXII (Trusted Automated eXchange of Intelligence Information) are OASIS open standards for representing and transporting cyber threat intelligence. domain cybersecurity subdomain threat-intelligence tags ["threat-intelligence","cti","ioc","mitre-attack","stix","taxii","feed-integration","oasis"] version 1.0 author mahipal license Apache-2.0 nist_csf ["ID.RA-01","ID.RA-05","DE.CM-01","DE.AE-02"]
Implementing STIX/TAXII Feed Integration
Overview
STIX (Structured Threat Information eXpression) and TAXII (Trusted Automated eXchange of Intelligence Information) are OASIS open standards for representing and transporting cyber threat intelligence. This skill covers implementing a STIX/TAXII 2.1 feed consumer and producer using Python, configuring TAXII server discovery, collection management, polling for new intelligence, parsing STIX 2.1 objects, and integrating feeds into SIEM and TIP platforms.
When to Use
When deploying or configuring implementing stix taxii feed integration capabilities in your environment
When establishing security controls aligned to compliance requirements
When building or improving security architecture for this domain
When conducting security assessments that require this implementation
Prerequisites
Python 3.9+ with taxii2-client, stix2, cti-taxii-client libraries
Understanding of STIX 2.1 data model (SDOs, SCOs, SROs)
Understanding of TAXII 2.1 protocol (discovery, API roots, collections)
Network access to TAXII servers (MITRE ATT&CK TAXII, Anomali STAXX)
Optional: medallion for running a local TAXII 2.1 server
Key Concepts
TAXII 2.1 Architecture
TAXII defines a RESTful API with three service types:
Discovery : Returns information about available API rootsAPI Root : Contains collections and serves as the main interaction pointCollection : A logical grouping of STIX objects accessible via GET/POST
STIX 2.1 Object Model
STIX objects are categorized as:
SDOs (STIX Domain Objects) : Indicator, Malware, Threat Actor, Campaign, Attack Pattern, Tool, Infrastructure, Vulnerability, Identity, Location, Note, Opinion, Report, GroupingSCOs (STIX Cyber Observables) : IPv4-Addr, Domain-Name, URL, File, Email-Addr, Process, Network-Traffic, ArtifactSROs (STIX Relationship Objects) : Relationship, SightingMeta Objects : Marking Definition (TLP), Language Content, Extension Definition
STIX Bundle
A Bundle is a collection of STIX objects transmitted together. Bundles have a unique ID and contain an array of objects. TAXII collections serve bundles in response to GET requests.
Workflow
Step 1: TAXII Server Discovery
from
import
"https://cti-taxii.mitre.org/taxii2/"
""
""
print
f"Title: {server.title} "
print
f"Description: {server.description} "
for
in
print
f"\nAPI Root: {api_root.title} "
print
f" URL: {api_root.url} "
for
in
print
f" Collection: {collection.title} (ID: {collection.id } )"
print
f" Can Read: {collection.can_read} "
print
f" Can Write: {collection.can_write} "
Step 2: Fetch STIX Objects from Collection from taxii2client.v21 import Collection, as_pages
import json
ENTERPRISE_ATTACK_ID = "95ecc380-afe9-11e4-9b6c-751b66dd541e"
collection = Collection(
f"https://cti-taxii.mitre.org/stix/collections/{ENTERPRISE_ATTACK_ID} /" ,
user="" ,
password="" ,
)
print (f"Collection: {collection.title} " )
all_objects = []
for envelope in as_pages(collection.get_objects, per_request=50 ):
objects = envelope.get("objects" , [])
all_objects.extend(objects)
print (f" Fetched {len (objects)} objects (total: {len (all_objects)} )" )
print (f"\nTotal objects retrieved: {len (all_objects)} " )
type_counts = {}
for obj in all_objects:
obj_type = obj.get("type" , "unknown" )
type_counts[obj_type] = type_counts.get(obj_type, 0 ) + 1
for obj_type, count in sorted (type_counts.items()):
print (f" {obj_type} : {count} " )
Step 3: Parse STIX 2.1 Objects with stix2 Library from stix2 import parse, Filter, MemoryStore
store = MemoryStore(stix_data=all_objects)
indicators = store.query([Filter("type" , "=" , "indicator" )])
print (f"Indicators: {len (indicators)} " )
for ind in indicators[:5 ]:
print (f" {ind.name} : {ind.pattern} " )
malware_list = store.query([Filter("type" , "=" , "malware" )])
print (f"\nMalware families: {len (malware_list)} " )
actors = store.query([Filter("type" , "=" , "intrusion-set" )])
print (f"Threat actors: {len (actors)} " )
def get_related (store, source_id ):
relationships = store.query([
Filter("type" , "=" , "relationship" ),
Filter("source_ref" , "=" , source_id),
])
return relationships
apt28 = store.query([
Filter("type" , "=" , "intrusion-set" ),
Filter("name" , "=" , "APT28" ),
])
if apt28:
rels = get_related(store, apt28[0 ].id )
for rel in rels:
target = store.get(rel.target_ref)
if target:
print (f" {rel.relationship_type} -> {target.name} ({target.type } )" )
Step 4: Implement Custom TAXII Consumer from taxii2client.v21 import Collection, as_pages
from stix2 import parse, Bundle
from datetime import datetime, timedelta
import json
class TAXIIConsumer :
"""Consume STIX/TAXII 2.1 feeds and extract IOCs."""
def __init__ (self, collection_url, user="" , password="" ):
self .collection = Collection(collection_url, user=user, password=password)
self .last_poll = None
def poll_new_objects (self, added_after=None ):
"""Poll for objects added after a specific timestamp."""
if added_after is None :
added_after = (
self .last_poll or
(datetime.utcnow() - timedelta(days=1 )).strftime(
"%Y-%m-%dT%H:%M:%S.000Z"
)
)
all_objects = []
kwargs = {"added_after" : added_after}
for envelope in as_pages(
self .collection.get_objects, per_request=100 , **kwargs
):
objects = envelope.get("objects" , [])
all_objects.extend(objects)
self .last_poll = datetime.utcnow().strftime("%Y-%m-%dT%H:%M:%S.000Z" )
return all_objects
def extract_indicators (self, objects ):
"""Extract actionable indicators from STIX objects."""
indicators = []
for obj in objects:
if obj.get("type" ) == "indicator" :
indicators.append({
"id" : obj.get("id" ),
"name" : obj.get("name" , "" ),
"pattern" : obj.get("pattern" , "" ),
"pattern_type" : obj.get("pattern_type" , "" ),
"valid_from" : obj.get("valid_from" , "" ),
"valid_until" : obj.get("valid_until" , "" ),
"indicator_types" : obj.get("indicator_types" , []),
"confidence" : obj.get("confidence" , 0 ),
"labels" : obj.get("labels" , []),
})
return indicators
def extract_observables (self, objects ):
"""Extract STIX Cyber Observables."""
observables = []
observable_types = {
"ipv4-addr" , "ipv6-addr" , "domain-name" , "url" ,
"file" , "email-addr" , "network-traffic" ,
}
for obj in objects:
if obj.get("type" ) in observable_types:
observables.append({
"type" : obj["type" ],
"value" : obj.get("value" , "" ),
"id" : obj.get("id" ),
})
return observables
consumer = TAXIIConsumer(
f"https://cti-taxii.mitre.org/stix/collections/{ENTERPRISE_ATTACK_ID} /"
)
new_objects = consumer.poll_new_objects()
indicators = consumer.extract_indicators(new_objects)
print (f"New indicators: {len (indicators)} " )
Step 5: Set Up Local TAXII Server with Medallion
TAXII_CONFIG = {
"backend" : {
"module_class" : "MemoryBackend" ,
},
"users" : {
"admin" : "admin_password" ,
"readonly" : "readonly_password" ,
},
"taxii" : {
"max_content_length" : 10485760 ,
},
}
import requests
def push_to_taxii (server_url, collection_id, stix_bundle, user, password ):
"""Push STIX bundle to a TAXII 2.1 collection."""
url = f"{server_url} /collections/{collection_id} /objects/"
headers = {
"Content-Type" : "application/stix+json;version=2.1" ,
"Accept" : "application/taxii+json;version=2.1" ,
}
response = requests.post(
url,
json=stix_bundle,
headers=headers,
auth=(user, password),
timeout=30 ,
)
return response.json()
Validation Criteria
TAXII server discovery returns valid API roots and collections
STIX objects fetched and parsed correctly from TAXII collections
Indicators extracted with valid STIX patterns
Pagination handled correctly for large collections
Consumer tracks polling state for incremental updates
Local TAXII server accepts and serves STIX bundles
References 