malwarebazaar.py

import json
import requests
from . import check_input_attribute, checking_error, standard_error_message
from pymisp import MISPEvent, MISPObject

mispattributes = {'input': ['md5', 'sha1', 'sha256'],
                  'format': 'misp_standard'}
moduleinfo = {'version': '0.1', 'author': 'Christian Studer',
              'description': 'Query Malware Bazaar to get additional information about the input hash.',
              'module-type': ['expansion', 'hover']}
moduleconfig = []


def parse_response(response):
    mapping = {'file_name': {'type': 'filename', 'object_relation': 'filename'},
               'file_size': {'type': 'size-in-bytes', 'object_relation': 'size-in-bytes'},
               'file_type_mime': {'type': 'mime-type', 'object_relation': 'mimetype'},
               'md5_hash': {'type': 'md5', 'object_relation': 'md5'},
               'sha1_hash': {'type': 'sha1', 'object_relation': 'sha1'},
               'sha256_hash': {'type': 'sha256', 'object_relation': 'sha256'},
               'ssdeep': {'type': 'ssdeep', 'object_relation': 'ssdeep'}}
    misp_event = MISPEvent()
    for data in response:
        misp_object = MISPObject('file')
        for feature, attribute in mapping.items():
            if feature in data:
                misp_attribute = {'value': data[feature]}
                misp_attribute.update(attribute)
                misp_object.add_attribute(**misp_attribute)
        misp_event.add_object(**misp_object)
    return {'results': {'Object': [json.loads(misp_object.to_json()) for misp_object in misp_event.objects]}}


def handler(q=False):
    if q is False:
        return False
    request = json.loads(q)
    if not request.get('attribute') or not check_input_attribute(request['attribute'], requirements=('type', 'value')):
        return {'error': f'{standard_error_message}, {checking_error} that is the hash to submit to Malware Bazaar.'}
    attribute = request['attribute']
    if attribute['type'] not in mispattributes['input']:
        return {'error': 'Unsupported attribute type.'}
    url = 'https://mb-api.abuse.ch/api/v1/'
    response = requests.post(url, data={'query': 'get_info', 'hash': attribute['value']}).json()
    query_status = response['query_status']
    if query_status == 'ok':
        return parse_response(response['data'])
    return {'error': 'Hash not found on MALWAREbazzar' if query_status == 'hash_not_found' else f'Problem encountered during the query: {query_status}'}


def introspection():
    return mispattributes


def version():
    moduleinfo['config'] = moduleconfig
    return moduleinfo