misp-modules/misp_modules/modules/expansion/greynoise.py

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import requests
import json
misperrors = {'error': 'Error'}
mispattributes = {'input': ['ip-dst', 'ip-src'], 'output': ['text']}
moduleinfo = {
'version': '0.2',
'author': 'Aurélien Schwab <aurelien.schwab+dev@gmail.com>',
'description': 'Module to access GreyNoise.io API.',
'module-type': ['hover']
}
moduleconfig = ['api_key']
greynoise_api_url = 'https://api.greynoise.io/v2/noise/quick/'
codes_mapping = {
'0x00': 'The IP has never been observed scanning the Internet',
'0x01': 'The IP has been observed by the GreyNoise sensor network',
'0x02': 'The IP has been observed scanning the GreyNoise sensor network, but has not completed a full connection, meaning this can be spoofed',
'0x03': 'The IP is adjacent to another host that has been directly observed by the GreyNoise sensor network',
'0x04': 'Reserved',
'0x05': 'This IP is commonly spoofed in Internet-scan activity',
'0x06': 'This IP has been observed as noise, but this host belongs to a cloud provider where IPs can be cycled frequently',
'0x07': 'This IP is invalid',
'0x08': 'This IP was classified as noise, but has not been observed engaging in Internet-wide scans or attacks in over 60 days'
}
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def handler(q=False):
if q is False:
return False
request = json.loads(q)
if not request.get('config') or not request['config'].get('api_key'):
return {'error': 'Missing Greynoise API key.'}
headers = {
'Accept': 'application/json',
'key': request['config']['api_key']
}
for input_type in mispattributes['input']:
if input_type in request:
ip = request[input_type]
break
else:
misperrors['error'] = "Unsupported attributes type."
return misperrors
response = requests.get(f'{greynoise_api_url}{ip}', headers=headers) # Real request
if response.status_code == 200: # OK (record found)
return {'results': [{'types': mispattributes['output'], 'values': codes_mapping[response.json()['code']]}]}
# There is an error
errors = {
400: "Bad request.",
401: "Unauthorized. Please check your API key.",
429: "Too many requests. You've hit the rate-limit."
}
try:
misperrors['error'] = errors[response.status_code]
except KeyError:
misperrors['error'] = f'GreyNoise API not accessible (HTTP {response.status_code})'
return misperrors['error']
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def introspection():
return mispattributes
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def version():
moduleinfo['config'] = moduleconfig
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return moduleinfo