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test_suricataFixup.py
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test_suricataFixup.py
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import os
import sys
from mozdef_util.utilities.toUTC import toUTC
import json
import random
import string
sys.path.append(os.path.join(os.path.dirname(__file__), "../../../mq/plugins"))
from suricataFixup import message
class TestSuricataFixup(object):
def setup(self):
self.plugin = message()
self.metadata = {
'doc_type': 'nsm',
'index': 'events'
}
# Should never match and be modified by the plugin
def test_notsuri_log(self):
metadata = {
'doc_type': 'event',
'index': 'events'
}
event = {
'key1': 'suricata'
}
result, metadata = self.plugin.onMessage(event, metadata)
# in = out - plugin didn't touch it
assert result == event
assert metadata['doc_type'] is not 'nsm'
# Should never match and be modified by the plugin
def test_notsuri_log2(self):
metadata = {
'doc_type': 'event',
'index': 'events'
}
event = {
'suricata': 'value1'
}
result, metadata = self.plugin.onMessage(event, metadata)
# in = out - plugin didn't touch it
assert result == event
assert metadata['doc_type'] is not 'nsm'
# Should never match and be modified by the plugin
def test_suricata_nocustomendpoint_log(self):
metadata = {
'doc_type': 'event',
'index': 'events'
}
event = {
'category': 'suricata',
'source': 'eve-log',
'event_type': 'alert'
}
result, metadata = self.plugin.onMessage(event, metadata)
# in = out - plugin didn't touch it
assert result == event
assert metadata['doc_type'] is not 'nsm'
def test_suricata_nocategory_log(self):
metadata = {
'doc_type': 'event',
'index': 'events'
}
event = {
'customendpoint': '',
'source': 'eve-log',
'event_type': 'alert'
}
result, metadata = self.plugin.onMessage(event, metadata)
# in = out - plugin didn't touch it
assert result == event
assert metadata['doc_type'] is not 'nsm'
def test_suricata_wrongcategory_log(self):
metadata = {
'doc_type': 'event',
'index': 'events'
}
event = {
'customendpoint': '',
'category': 'alamakota',
'source': 'eve-log',
'event_type': 'alert'
}
result, metadata = self.plugin.onMessage(event, metadata)
# in = out - plugin didn't touch it
assert result == event
assert metadata['doc_type'] is not 'nsm'
# Should never match and be modified by the plugin
def test_suricata_notype_log(self):
metadata = {
'doc_type': 'event',
'index': 'events'
}
event = {
'category': 'suricata',
'customendpoint': '',
'category': 'suricata',
'source': 'eve-log'
}
result, metadata = self.plugin.onMessage(event, metadata)
assert result['category'] == 'suricata'
assert result['source'] == 'eve-log'
assert result['event_type'] == 'unknown'
assert metadata['doc_type'] is 'nsm'
def test_suricata_wrongtype_log(self):
metadata = {
'doc_type': 'event',
'index': 'events'
}
event = {
'customendpoint': '',
'category': 'suricata',
'source': 'eve-log',
'event_type': 'alamakota'
}
result, metadata = self.plugin.onMessage(event, metadata)
assert result['category'] == 'suricata'
assert result['source'] == 'eve-log'
assert result['event_type'] == 'alamakota'
assert metadata['doc_type'] is 'nsm'
def test_suricata_nosource_log(self):
event = {
'customendpoint': '',
'category': 'suricata',
}
MESSAGE = {
'ts': 1505701210.163043
}
event['message'] = json.dumps(MESSAGE)
result, metadata = self.plugin.onMessage(event, self.metadata)
assert result['category'] == 'suricata'
assert result['source'] == 'unknown'
assert metadata['doc_type'] is 'nsm'
def test_suricata_wrongsource_log(self):
event = {
'customendpoint': '',
'category': 'suricata',
'source': 'alamakota',
'event_type': 'alert'
}
MESSAGE = {
'ts': 1505701210.163043
}
event['message'] = json.dumps(MESSAGE)
result, metadata = self.plugin.onMessage(event, self.metadata)
assert result['category'] == 'suricata'
assert result['source'] == 'alamakota'
assert metadata['doc_type'] is 'nsm'
def verify_metadata(self, metadata):
assert metadata['doc_type'] == 'nsm'
def test_defaults(self):
event = {
'customendpoint': '',
'category': 'suricata',
'source': 'eve-log',
'event_type': 'alert'
}
result, metadata = self.plugin.onMessage(event, self.metadata)
print(result, len(result))
self.verify_defaults(result)
self.verify_metadata(metadata)
assert result['category'] == 'suricata'
def test_nomatch_syslog(self):
event = {
"category": "syslog",
"processid": "0",
"receivedtimestamp": "2017-09-26T00:22:24.210945+00:00",
"severity": "7",
"utctimestamp": "2017-09-26T00:22:23+00:00",
"timestamp": "2017-09-26T00:22:23+00:00",
"hostname": "syslog1.private.scl3.mozilla.com",
"mozdefhostname": "mozdef1.private.scl3.mozilla.com",
"summary": "Connection from 10.22.74.208 port 9071 on 10.22.74.45 nsm suricata port 22\n",
"eventsource": "systemslogs",
"details": {
"processid": "21233",
"sourceipv4address": "10.22.74.208",
"hostname": "hostname1.subdomain.domain.com",
"program": "sshd",
"sourceipaddress": "10.22.74.208"
}
}
result, metadata = self.plugin.onMessage(event, self.metadata)
assert result['category'] == 'syslog'
assert result['eventsource'] == 'systemslogs'
assert result == event
def test_nomatch_auditd(self):
event = {
"category": "execve",
"processid": "0",
"receivedtimestamp": "2017-09-26T00:36:27.463745+00:00",
"severity": "INFO",
"utctimestamp": "2017-09-26T00:36:27+00:00",
"tags": [
"audisp-json",
"2.1.1",
"audit"
],
"summary": "Execve: sh -c sudo suricata nsm /usr/lib64/nagios/plugins/custom/check_auditd.sh",
"processname": "audisp-json",
"details": {
"fsuid": "398",
"tty": "(none)",
"uid": "398",
"process": "/bin/bash",
"auditkey": "exec",
"pid": "10553",
"processname": "sh",
"session": "16467",
"fsgid": "398",
"sgid": "398",
"auditserial": "3834716",
"inode": "1835094",
"ouid": "0",
"ogid": "0",
"suid": "398",
"originaluid": "0",
"gid": "398",
"originaluser": "root",
"ppid": "10552",
"cwd": "/",
"parentprocess": "nrpe",
"euid": "398",
"path": "/bin/sh",
"rdev": "00:00",
"dev": "08:03",
"egid": "398",
"command": "sh -c sudo /usr/lib64/nagios/plugins/custom/check_auditd.sh",
"mode": "0100755",
"user": "nagios"
}
}
result, metadata = self.plugin.onMessage(event, self.metadata)
assert result['category'] == 'execve'
assert 'eventsource' not in result
assert result == event
def verify_defaults(self, result):
assert result['category'] == 'suricata'
assert result['eventsource'] == 'nsm'
assert toUTC(result['receivedtimestamp']).isoformat() == result['receivedtimestamp']
assert result['severity'] == 'INFO'
assert 'event_type' in result
assert 'source' in result
assert toUTC(result['timestamp']).isoformat() == result['timestamp']
assert toUTC(result['utctimestamp']).isoformat() == result['utctimestamp']
def test_eve_log_alert_flow(self):
event = {
'customendpoint': '',
'category': 'suricata',
'source': 'eve-log',
'event_type': 'alert'
}
MESSAGE = {
"timestamp":"2018-09-12T22:24:09.546736+0000",
"flow_id":1484802709084080,
"in_iface":"enp216s0f0",
"event_type":"alert",
"vlan":75,
"src_ip":"10.48.240.19",
"src_port":44741,
"dest_ip":"10.48.75.120",
"dest_port":53,
"proto":"017",
"alert":{
"action":"allowed",
"gid":1,
"signature_id":2500003,
"rev":1,
"signature":"SURICATA DNS Query to a Suspicious *.ws Domain",
"category":"",
"severity":3
},
"app_proto":"dns",
"flow":{
"pkts_toserver":2,
"pkts_toclient":0,
"bytes_toserver":150,
"bytes_toclient":0,
"start":"2018-09-12T22:24:09.546736+0000"
},
"payload":"qFEBAAABAAAAAAAAA3d3dwhpbnNlY3VyZQJ3cwAAHAAB",
"payload_printable":".Q...........www.insecure.ws.....",
"stream":0,
"packet":"AABeAAEKtAwl4EAQCABFAAA9M+5AAD4RuNYKMPATCjBLeK7FADUAKZFMqFEBAAABAAAAAAAAA3d3dwhpbnNlY3VyZQJ3cwAAHAAB",
"packet_info":{
"linktype":1
}
}
event['message'] = json.dumps(MESSAGE)
result, metadata = self.plugin.onMessage(event, self.metadata)
self.verify_defaults(result)
self.verify_metadata(metadata)
assert toUTC(MESSAGE['flow']['start']).isoformat() == result['utctimestamp']
assert toUTC(MESSAGE['flow']['start']).isoformat() == result['timestamp']
assert result['details']['originipbytes'] == MESSAGE['flow']['bytes_toserver']
assert result['details']['responseipbytes'] == MESSAGE['flow']['bytes_toclient']
assert result['details']['orig_pkts'] == MESSAGE['flow']['pkts_toserver']
assert result['details']['resp_pkts'] == MESSAGE['flow']['pkts_toclient']
assert result['details']['service'] == MESSAGE['app_proto']
assert 'pkts_toserver' not in result['details']['flow']
assert 'pkts_toclient' not in result['details']['flow']
assert 'bytes_toserver' not in result['details']['flow']
assert 'bytes_toclient' not in result['details']['flow']
assert 'app_proto' not in result['details']
assert result['summary'] == '10.48.240.19:44741 -> 10.48.75.120:53'
def test_eve_log_alert_http(self):
event = {
'customendpoint': '',
'category': 'suricata',
'source': 'eve-log',
'event_type': 'alert'
}
MESSAGE = {
"timestamp":"2018-09-12T22:24:09.546736+0000",
"flow_id":1484802709084080,
"in_iface":"enp216s0f0",
"event_type":"alert",
"vlan":75,
"src_ip":"10.48.240.19",
"src_port":44741,
"dest_ip":"10.48.74.17",
"dest_port":3128,
"proto":"017",
"alert":{
"action":"allowed",
"gid":1,
"signature_id":2024897,
"rev":1,
"signature":"ET USER_AGENTS Go HTTP Client User-Agent",
"category":"",
"severity":3
},
"app_proto":"http",
"flow":{
"pkts_toserver":555,
"pkts_toclient":20,
"bytes_toserver":350,
"bytes_toclient":4444,
"start":"2018-10-12T22:24:09.546736+0000"
},
"payload":"Q09OTkVDVCBzZWN1cml0eS10cmFja2VyLmRlYmlhbi5vcmc6NDQzIEhUVFAvMS4xDQpIb3N0OiBzZWN1cml0eS10cmFja2VyLmRlYmlhbi5vcmc6NDQzDQpVc2VyLUFnZW50OiBHby1odHRwLWNsaWVudC8xLjENCg0K",
"payload_printable":"CONNECT security-tracker.debian.org:443 HTTP\/1.1\r\nHost: security-tracker.debian.org:443\r\nUser-Agent: Go-http-client\/1.1\r\n\r\n",
"stream":0,
"packet":"RQAAKAAAAABABgAACjBLMAowShHR6Aw4ClEmlrx\/mcdQEgoAAAAAAA==",
"packet_info":{
"linktype":12
},
"http": {
"hostname":"security-tracker.debian.org",
"url":"security-tracker.debian.org:443",
"http_user_agent":"Go-http-client\/1.1",
"http_method":"CONNECT",
"protocol":"HTTP\/1.1",
"status":200,
"length":0,
"redirect":"afakedestination"
},
}
event['message'] = json.dumps(MESSAGE)
result, metadata = self.plugin.onMessage(event, self.metadata)
self.verify_defaults(result)
self.verify_metadata(metadata)
assert toUTC(MESSAGE['flow']['start']).isoformat() == result['utctimestamp']
assert toUTC(MESSAGE['flow']['start']).isoformat() == result['timestamp']
assert result['details']['host'] == MESSAGE['http']['hostname']
assert result['details']['method'] == MESSAGE['http']['http_method']
assert result['details']['user_agent'] == MESSAGE['http']['http_user_agent']
assert result['details']['status_code'] == MESSAGE['http']['status']
assert result['details']['uri'] == MESSAGE['http']['url']
assert result['details']['redirect_dst'] == MESSAGE['http']['redirect']
assert result['details']['request_body_len'] == MESSAGE['http']['length']
def test_eve_log_alert_truncate(self):
event = {
'customendpoint': '',
'category': 'suricata',
'source': 'eve-log',
'event_type': 'alert'
}
MESSAGE = {
"timestamp":"2018-09-12T22:24:09.546736+0000",
"flow_id":1484802709084080,
"in_iface":"enp216s0f0",
"event_type":"alert",
"vlan":75,
"src_ip":"10.48.240.19",
"src_port":44741,
"dest_ip":"10.48.74.17",
"dest_port":3128,
"proto":"017",
"alert":{
"action":"allowed",
"gid":1,
"signature_id":2024897,
"rev":1,
"signature":"ET USER_AGENTS Go HTTP Client User-Agent",
"category":"",
"severity":3
},
"app_proto":"http",
"flow":{
"pkts_toserver":555,
"pkts_toclient":20,
"bytes_toserver":350,
"bytes_toclient":4444,
"start":"2018-10-12T22:24:09.546736+0000"
},
"stream":0,
"packet_info":{
"linktype":12
},
"http": {
"hostname":"such.a.host.com",
"url":"/allyourfiles",
"http_user_agent":"FirefoxRulez",
"http_method":"GET",
"protocol":"HTTP\/1.2",
"status":200,
"length":5000,
"redirect":"afakedestination"
},
}
# Note - do not copy to other apps. This is INSECURE.
large_pseudorandom_string = ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(5000))
MESSAGE['packet'] = large_pseudorandom_string
MESSAGE['payload'] = large_pseudorandom_string
MESSAGE['payload_printable'] = large_pseudorandom_string
MESSAGE['http']['http_response_body'] = large_pseudorandom_string
MESSAGE['http']['http_response_body_printable'] = large_pseudorandom_string
event['message'] = json.dumps(MESSAGE)
result, metadata = self.plugin.onMessage(event, self.metadata)
self.verify_defaults(result)
self.verify_metadata(metadata)
assert result['details']['host'] == MESSAGE['http']['hostname']
assert result['details']['method'] == MESSAGE['http']['http_method']
assert result['details']['user_agent'] == MESSAGE['http']['http_user_agent']
assert result['details']['status_code'] == MESSAGE['http']['status']
assert result['details']['uri'] == MESSAGE['http']['url']
assert result['details']['redirect_dst'] == MESSAGE['http']['redirect']
assert result['details']['request_body_len'] == MESSAGE['http']['length']
assert len(result['details']['packet']) == 4095
assert len(result['details']['payload']) == 4095
assert len(result['details']['payload_printable']) == 4095
assert len(result['details']['http_response_body']) == 4095
assert len(result['details']['http_response_body_printable']) == 4095
def test_eve_log_alert_flowbits(self):
event = {
'customendpoint': '',
'category': 'suricata',
'source': 'eve-log',
'event_type': 'alert'
}
MESSAGE = {
"timestamp":"2018-09-12T22:24:09.546736+0000",
"flow_id":1484802709084080,
"in_iface":"enp216s0f0",
"event_type":"alert",
"vlan":75,
"src_ip":"10.48.240.19",
"src_port":44741,
"dest_ip":"10.48.75.120",
"dest_port":53,
"proto":"017",
"alert":{
"action":"allowed",
"gid":1,
"signature_id":2500003,
"rev":1,
"signature":"SURICATA DNS Query to a Suspicious *.ws Domain",
"category":"",
"severity":3
},
"app_proto":"dns",
"flow":{
"pkts_toserver":2,
"pkts_toclient":0,
"bytes_toserver":150,
"bytes_toclient":0,
"start":"2018-09-12T22:24:09.546736+0000"
},
"payload":"qFEBAAABAAAAAAAAA3d3dwhpbnNlY3VyZQJ3cwAAHAAB",
"payload_printable":".Q...........www.insecure.ws.....",
"stream":0,
"packet":"AABeAAEKtAwl4EAQCABFAAA9M+5AAD4RuNYKMPATCjBLeK7FADUAKZFMqFEBAAABAAAAAAAAA3d3dwhpbnNlY3VyZQJ3cwAAHAAB",
"packet_info":{
"linktype":1
},
"vars":{
"flowbits":{
"et.http.javaclient.vulnerable":"true",
"et.javanotjar":"true",
"et.http.javaclient":"true"
}
}
}
event['message'] = json.dumps(MESSAGE)
result, metadata = self.plugin.onMessage(event, self.metadata)
self.verify_defaults(result)
self.verify_metadata(metadata)
assert 'vars' in result['details']
assert 'flowbits' in result['details']['vars']
assert result['details']['vars']['flowbits']['et.http.javaclient.vulnerable'] == "true"
assert result['details']['vars']['flowbits']['et.javanotjar'] == "true"
def test_eve_log_alert_rename(self):
event = {
'customendpoint': '',
'category': 'suricata',
'source': 'eve-log',
'event_type': 'alert'
}
MESSAGE = {
"timestamp":"2018-09-12T22:24:09.546736+0000",
"flow_id":1484802709084080,
"in_iface":"enp216s0f0",
"event_type":"alert",
"vlan":75,
"src_ip":"10.48.240.19",
"src_port":44741,
"dest_ip":"10.48.75.120",
"dest_port":53,
"proto":"017",
"alert":{
"action":"allowed",
"gid":1,
"signature_id":2500003,
"rev":1,
"signature":"SURICATA DNS Query to a Suspicious *.ws Domain",
"category":"",
"severity":3
},
"app_proto":"dns",
"flow":{
"pkts_toserver":2,
"pkts_toclient":0,
"bytes_toserver":150,
"bytes_toclient":0,
"start":"2018-09-12T22:24:09.546736+0000"
},
"payload":"qFEBAAABAAAAAAAAA3d3dwhpbnNlY3VyZQJ3cwAAHAAB",
"payload_printable":".Q...........www.insecure.ws.....",
"stream":0,
"packet":"AABeAAEKtAwl4EAQCABFAAA9M+5AAD4RuNYKMPATCjBLeK7FADUAKZFMqFEBAAABAAAAAAAAA3d3dwhpbnNlY3VyZQJ3cwAAHAAB",
"packet_info":{
"linktype":1
}
}
event['message'] = json.dumps(MESSAGE)
result, metadata = self.plugin.onMessage(event, self.metadata)
self.verify_defaults(result)
self.verify_metadata(metadata)
assert 'suricata_alert' in result['details']
assert 'alert' not in result['details']
assert result['details'][u'suricata_alert'][u'action'] == MESSAGE['alert']['action']
assert result['details'][u'suricata_alert'][u'gid'] == MESSAGE['alert']['gid']
assert result['details'][u'suricata_alert'][u'rev'] == MESSAGE['alert']['rev']
assert result['details'][u'suricata_alert'][u'signature_id'] == MESSAGE['alert']['signature_id']
assert result['details'][u'suricata_alert'][u'signature'] == MESSAGE['alert']['signature']
assert result['details'][u'suricata_alert'][u'category'] == MESSAGE['alert']['category']
assert result['details'][u'suricata_alert'][u'severity'] == MESSAGE['alert']['severity']