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Added EQL enrichment module

pull/346/head
Braden Laverick 3 years ago
parent
commit
a426ad249d
  1. 2
      misp_modules/modules/expansion/__init__.py
  2. 105
      misp_modules/modules/expansion/eql.py

2
misp_modules/modules/expansion/__init__.py

@ -4,7 +4,7 @@ import sys @@ -4,7 +4,7 @@ import sys
sys.path.append('{}/lib'.format('/'.join((os.path.realpath(__file__)).split('/')[:-3])))
__all__ = ['cuckoo_submit', 'vmray_submit', 'bgpranking', 'circl_passivedns', 'circl_passivessl',
'countrycode', 'cve', 'cve_advanced', 'dns', 'btc_steroids', 'domaintools', 'eupi',
'countrycode', 'cve', 'cve_advanced', 'dns', 'btc_steroids', 'domaintools', 'eupi', 'eql',
'farsight_passivedns', 'ipasn', 'passivetotal', 'sourcecache', 'virustotal',
'whois', 'shodan', 'reversedns', 'geoip_country', 'wiki', 'iprep',
'threatminer', 'otx', 'threatcrowd', 'vulndb', 'crowdstrike_falcon',

105
misp_modules/modules/expansion/eql.py

@ -0,0 +1,105 @@ @@ -0,0 +1,105 @@
"""
Export module for converting MISP events into Endgame EQL queries
"""
import base64
import csv
import io
import json
import logging
misperrors = {"error": "Error"}
moduleinfo = {
"version": "0.1",
"author": "92 COS DOM",
"description": "Generates EQL queries from events",
"module-type": ["expansion"]
}
# Map of MISP fields => ThreatConnect fields
fieldmap = {
# "domain": "Host",
# "domain|ip": "Host|Address",
# "hostname": "hostname",
"ip-src": "source_address",
"ip-dst": "destination_address",
# "ip-src|port": "Address",
# "ip-dst|port": "Address",
# "url": "URL",
"filename": "file_name"
}
# Describe what events have what fields
event_types = {
"source_address": "network",
"destination_address": "network",
"file_name": "file"
}
# combine all the MISP fields from fieldmap into one big list
mispattributes = {
"input": list(fieldmap.keys())
}
def handler(q=False):
"""
Convert a MISP query into a CSV file matching the ThreatConnect Structured Import file format.
Input
q: Query dictionary
"""
if q is False or not q:
return False
# Check if we were given a configuration
request = json.loads(q)
config = request.get("config", {"Default_Source": ""})
logging.info("Setting config to: %s", config)
# start parsing MISP data
queryDict = {}
for event in request["data"]:
for attribute in event["Attribute"]:
if attribute["type"] in mispattributes["input"]:
logging.debug("Adding %s to EQL query", attribute["value"])
event_type = event_types[fieldmap[attribute["type"]]]
if event_type not in queryDict.keys():
queryDict[event_type] = {}
queryDict[event_type][attribute["value"]] = fieldmap[attribute["type"]]
response = []
fullEql = ""
for query in queryDict.keys():
fullEql += "{} where\n".format(query)
for value in queryDict[query].keys():
fullEql += "\t{} == \"{}\"\n".format(queryDict[query][value], value)
response.append({'types': ['comment'], 'categories': ['External analysis'], 'values': fullEql, 'comment': "Event EQL queries"})
return {'results': response}
def introspection():
"""
Relay the supported attributes to MISP.
No Input
Output
Dictionary of supported MISP attributes
"""
# modulesetup = {
# "responseType": "application/txt",
# "outputFileExtension": "txt",
# "userConfig": {},
# "inputSource": []
# }
# return modulesetup
return mispattributes
def version():
"""
Relay module version and associated metadata to MISP.
No Input
Output
moduleinfo: metadata output containing all potential configuration values
"""
#moduleinfo["config"] = moduleconfig
return moduleinfo
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