Modules for expansion services, import and export in MISP http://misp.github.io/misp-modules
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import io
import json
try:
from sigma.parser.collection import SigmaCollectionParser
from sigma.configuration import SigmaConfiguration
from sigma.backends.discovery import getBackend
except ImportError:
print("sigma or yaml is missing, use 'pip3 install sigmatools' to install it.")
misperrors = {'error': 'Error'}
mispattributes = {'input': ['sigma'], 'output': ['text']}
moduleinfo = {'version': '0.1', 'author': 'Christian Studer', 'module-type': ['expansion', 'hover'],
'description': 'An expansion hover module to display the result of sigma queries.'}
moduleconfig = []
sigma_targets = ('es-dsl', 'es-qs', 'graylog', 'kibana', 'xpack-watcher', 'logpoint', 'splunk', 'grep', 'mdatp', 'splunkxml', 'arcsight', 'qualys')
def handler(q=False):
if q is False:
return False
request = json.loads(q)
if not request.get('sigma'):
misperrors['error'] = 'Sigma rule missing'
return misperrors
config = SigmaConfiguration()
f = io.TextIOWrapper(io.BytesIO(request.get('sigma').encode()), encoding='utf-8')
parser = SigmaCollectionParser(f, config)
targets = []
results = []
for t in sigma_targets:
backend = getBackend(t)(config, {'rulecomment': False})
try:
parser.generate(backend)
result = backend.finalize()
if result:
results.append(result)
targets.append(t)
except Exception:
continue
d_result = {t: r.strip() for t, r in zip(targets, results)}
return {'results': [{'types': mispattributes['output'], 'values': d_result}]}
def introspection():
return mispattributes
def version():
moduleinfo['config'] = moduleconfig
return moduleinfo