mirror of https://github.com/MISP/misp-modules
77 lines
3.2 KiB
Python
77 lines
3.2 KiB
Python
# import requests
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import json
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from pymisp import MISPObject, MISPAttribute, MISPEvent
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from . import check_input_attribute, checking_error, standard_error_message
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from pysafebrowsing import SafeBrowsing
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misperrors = {'error': 'Error'}
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mispattributes = {'input': ['url'], 'format': 'misp_standard'}
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moduleinfo = {'version': '0.1', 'author': 'Stephanie S',
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'description': 'Google safe browsing expansion module',
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'module-type': ['expansion', 'hover']}
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moduleconfig = ['api_key']
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def handler(q=False):
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if q is False:
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return False
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request = json.loads(q)
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if "config" not in request or "api_key" not in request["config"]:
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return {"error": "Google Safe Browsing API key is missing"}
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if not request.get('attribute') or not check_input_attribute(request['attribute'], requirements=('type', 'value')):
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return {'error': f'{standard_error_message}, {checking_error}.'}
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if request['attribute']['type'] not in mispattributes['input']:
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return {'error': 'Unsupported attribute type.'}
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api_key = request["config"]["api_key"]
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url = request["attribute"]["value"]
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s = SafeBrowsing(api_key)
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try:
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response = s.lookup_urls([url])
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event = MISPEvent()
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obj = MISPObject('google-safe-browsing')
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event.add_attribute(**request['attribute'])
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if (response[url]['malicious'] != False):
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# gsb threat types: THREAT_TYPE_UNSPECIFIED, MALWARE, SOCIAL_ENGINEERING, UNWANTED_SOFTWARE, POTENTIALLY_HARMFUL_APPLICATION
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gsb_circl_threat_taxonomy = {"MALWARE": 'malware', "SOCIAL_ENGINEERING": 'social-engineering'}
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threats = response[url]['threats']
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malicious = response[url]['malicious']
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platforms = response[url]['platforms']
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malicious_attribute = obj.add_attribute('malicious', **{'type': 'boolean', 'value': malicious})
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malicious_attribute.add_tag(f'ioc:artifact-state="malicious"')
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threat_attribute = obj.add_attribute('threats', **{'type': 'text', 'value': str(" ".join(threats))})
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for threat in threats:
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# If the threat exists as a key in taxonomy_dict, add that tag
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if (gsb_circl_threat_taxonomy.get(threat) is not None):
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threat_attribute.add_tag(f'circl:incident="{gsb_circl_threat_taxonomy.get(threat)}"')
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else:
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threat_attribute.add_tag(f'threat-type:{str(threat).lower()}')
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obj.add_attribute('platforms', **{'type': 'text', 'value': str(" ".join(platforms))})
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else:
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malicious_attribute = obj.add_attribute('malicious', **{'type': 'boolean', 'value': 0}) # 0 == False
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malicious_attribute.add_tag(f'ioc:artifact-state="not-malicious"')
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obj.add_reference(request['attribute']['uuid'], "describes")
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event.add_object(obj)
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# Avoid serialization issue
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event = json.loads(event.to_json())
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return {"results": {'Object': event['Object'], 'Attribute': event['Attribute']}}
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except Exception as error:
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return {"error": "An error occurred: " + str(error)}
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def introspection():
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return mispattributes
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def version():
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moduleinfo['config'] = moduleconfig
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return moduleinfo
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