MISP exportmodule to create a VT Collection form an event

pull/548/head
Daniel Pascual 12 months ago
parent cc4c9935d5
commit 323ca67a6c
  1. 3
      misp_modules/modules/export_mod/__init__.py
  2. 134
      misp_modules/modules/export_mod/virustotal_collections.py

@ -1,2 +1,3 @@
__all__ = ['cef_export', 'mass_eql_export', 'liteexport', 'goamlexport', 'threat_connect_export', 'pdfexport',
'threatStream_misp_export', 'osqueryexport', 'nexthinkexport', 'vt_graph', 'defender_endpoint_export']
'threatStream_misp_export', 'osqueryexport', 'nexthinkexport', 'vt_graph', 'defender_endpoint_export',
'virustotal_collections']

@ -0,0 +1,134 @@
#!/usr/bin/env python3
# Copyright 2022 Google Inc. All Rights Reserved.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Creates a VT Collection with indicators present in a given event."""
import base64
import json
import requests
misperrors = {
'error': 'Error'
}
mispattributes = {
'input': [
'hostname',
'domain',
'ip-src',
'ip-dst',
'md5',
'sha1',
'sha256',
'url'
],
'format': 'misp_standard',
'responseType': 'application/txt',
'outputFileExtension': 'txt',
}
moduleinfo = {
'version': '1.0',
'author': 'VirusTotal',
'description': 'Creates a VT Collection from an event iocs.',
'module-type': ['export']
}
moduleconfig = [
'vt_api_key',
'proxy_host',
'proxy_port',
'proxy_username',
'proxy_password'
]
class VTError(Exception):
"Exception class to map vt api response errors."
pass
def create_collection(api_key, event_data):
headers = {
'x-apikey': api_key,
'content-type': 'application/json',
'x-tool': 'MISPModuleVirusTotalCollectionExport',
}
response = requests.post('https://www.virustotal.com/api/v3/integrations/misp/collections',
headers=headers,
json=event_data)
uuid = event_data['Event']['uuid']
response_data = response.json()
if response.status_code == 200:
link = response_data['data']['links']['self']
return f'{uuid}: {link}'
error = response_data['error']['message']
if response.status_code == 400:
return f'{uuid}: {error}'
else:
misperrors['error'] = error
raise VTError(error)
def normalize_misp_data(data):
normalized_data = {'Event': data.pop('Event', {})}
for attr_key in data:
if isinstance(data[attr_key], list) or isinstance(data[attr_key], dict):
if attr_key == 'EventTag':
normalized_data['Event']['Tag'] = [tag['Tag'] for tag in data[attr_key]]
else:
normalized_data['Event'][attr_key] = data[attr_key]
return normalized_data
def handler(q=False):
request = json.loads(q)
if not request.get('config') or not request['config'].get('vt_api_key'):
misperrors['error'] = 'A VirusTotal api key is required for this module.'
return misperrors
config = request['config']
data = request['data']
responses = []
try:
for event_data in data:
normalized_event = normalize_misp_data(event_data)
responses.append(create_collection(config.get('vt_api_key'),
normalized_event))
output = '\n'.join(responses)
return {
"response": [],
"data": str(base64.b64encode(bytes(output, 'utf-8')), 'utf-8'),
}
except VTError:
return misperrors
def introspection():
return mispattributes
def version():
moduleinfo['config'] = moduleconfig
return moduleinfo
Loading…
Cancel
Save