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clientcontroller.py
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clientcontroller.py
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import os
import hashlib
import traceback
import struct
import json
import time
import socket
import urlparse
import random
import additionalinfo
import ipdb.ipdb
from sqlalchemy import desc, func, and_, or_
from decorator import decorator
from functools import wraps
from simpleeval import simple_eval
from argon2 import argon2_hash
from db import get_db, filter_ascii, Sample, Connection, Url, ASN, Tag, User, Network, Malware, IPRange, db_wrapper
from virustotal import Virustotal
from cuckoo import Cuckoo
from util.dbg import dbg
from util.config import config
from difflib import ndiff
ANIMAL_NAMES = ["Boar","Stallion","Yak","Beaver","Salamander","Eagle Owl","Impala","Elephant","Chameleon","Argali","Lemur","Addax","Colt",
"Whale","Dormouse","Budgerigar","Dugong","Squirrel","Okapi","Burro","Fish","Crocodile","Finch","Bison","Gazelle","Basilisk",
"Puma","Rooster","Moose","Musk Deer","Thorny Devil","Gopher","Gnu","Panther","Porpoise","Lamb","Parakeet","Marmoset","Coati",
"Alligator","Elk","Antelope","Kitten","Capybara","Mule","Mouse","Civet","Zebu","Horse","Bald Eagle","Raccoon","Pronghorn",
"Parrot","Llama","Tapir","Duckbill Platypus","Cow","Ewe","Bighorn","Hedgehog","Crow","Mustang","Panda","Otter","Mare",
"Goat","Dingo","Hog","Mongoose","Guanaco","Walrus","Springbok","Dog","Kangaroo","Badger","Fawn","Octopus","Buffalo","Doe",
"Camel","Shrew","Lovebird","Gemsbok","Mink","Lynx","Wolverine","Fox","Gorilla","Silver Fox","Wolf","Ground Hog","Meerkat",
"Pony","Highland Cow","Mynah Bird","Giraffe","Cougar","Eland","Ferret","Rhinoceros"]
# Controls Actions perfomed by Honeypot Clients
class ClientController:
def __init__(self):
self.session = None
if config.get("submit_to_vt"):
self.vt = Virustotal(config.get("vt_key", optional=True))
else:
self.vt = None
self.cuckoo = Cuckoo(config)
self.do_ip_to_asn_resolution = False
self.ip2asn = config.get("ip_to_asn_resolution", optional=True, default=True)
if self.ip2asn == "offline":
self.do_ip_to_asn_resolution = True
self.fill_db_ipranges()
if self.ip2asn == "online":
self.do_ip_to_asn_resolution = True
@db_wrapper
def _get_asn(self, asn_id):
asn_obj = self.session.query(ASN).filter(ASN.asn == asn_id).first()
if asn_obj:
return asn_obj
else:
asn_info = additionalinfo.get_asn_info(asn_id)
if asn_info:
asn_obj = ASN(asn=asn_id, name=asn_info['name'], reg=asn_info['reg'], country=asn_info['country'])
self.session.add(asn_obj)
return asn_obj
return None
def calc_connhash_similiarity(self, h1, h2):
l = min(len(h1), len(h2))
r = 0
for i in range(0, l):
r += int(h1[i] != h2[i])
if l == 0: return 0
return float(r)/float(l)
def calc_connhash(self, stream):
output = ""
for event in stream:
if event["in"]:
line = event["data"]
line = line.strip()
parts = line.split(" ")
for part in parts:
part_hash = chr(hash(part) % 0xFF)
output += part_hash
# Max db len is 256, half because of hex encoding
return output[:120]
@db_wrapper
def fill_db_ipranges(self):
if self.session.query(IPRange.ip_min).count() != 0:
return
print "Filling IPRange Tables"
asntable = ipdb.ipdb.get_asn()
progress = 0
for row in ipdb.ipdb.get_geo_iter():
progress += 1
if progress % 1000 == 0:
self.session.commit()
self.session.flush()
print str(100.0 * float(row[0]) / 4294967296.0) + "% / " + str(100.0 * progress / 3315466) + "%"
ip = IPRange(ip_min = int(row[0]), ip_max=int(row[1]))
ip.country = row[2]
ip.region = row[4]
ip.city = row[5]
ip.zipcode = row[8]
ip.timezone = row[9]
ip.latitude = float(row[6])
ip.longitude = float(row[7])
asn_data = asntable.find_int(ip.ip_min)
if asn_data:
asn_id = int(asn_data[3])
asn_db = self.session.query(ASN).filter(ASN.asn == asn_id).first()
if asn_db == None:
asn_db = ASN(asn = asn_id, name = asn_data[4], country=ip.country)
self.session.add(asn_db)
ip.asn = asn_db
# Dont add session if we cannot find an asn for it
self.session.add(ip)
print "IPranges loaded"
@db_wrapper
def get_ip_range_offline(self, ip):
ip_int = ipdb.ipdb.ipstr2int(ip)
range = self.session.query(IPRange).filter(and_(IPRange.ip_min <= ip_int,
ip_int <= IPRange.ip_max)).first()
return range
def get_ip_range_online(self, ip):
addinfo = additionalinfo.get_ip_info(ip)
if addinfo:
# TODO: Ugly hack
range = type('',(object,),{})()
range.country = addinfo["country"]
range.city = "Unknown"
range.latitude = 0
range.longitude = 0
range.asn_id = int(addinfo["asn"])
range.asn = self._get_asn(range.asn_id)
range.cidr = addinfo["ipblock"]
return range
else:
return None
def get_ip_range(self, ip):
if self.ip2asn == "online":
return self.get_ip_range_online(ip)
else:
return self.get_ip_range_offline(ip)
def get_url_info(self, url):
parsed = urlparse.urlparse(url)
host = parsed.netloc.split(':')[0]
if host[0].isdigit():
ip = host
else:
try:
ip = socket.gethostbyname(host)
except:
return None
range = self.get_ip_range(ip)
return ip, range
@db_wrapper
def do_housekeeping(self):
for malware in self.session.query(Malware).all():
malware.name = random.choice(ANIMAL_NAMES)
# rebuild nb_firstconns
if False:
net_cache = {}
for conn in self.session.query(Connection).all():
if len(conn.conns_before) == 0:
if conn.network_id in net_cache:
net_cache[conn.network_id] += 1
else:
net_cache[conn.network_id] = 1
for network in self.session.query(Network).all():
if network.id in net_cache:
network.nb_firstconns = net_cache[network.id]
else:
network.nb_firstconns = 0
print "Net " + str(network.id) + ": " + str(network.nb_firstconns)
@db_wrapper
def put_session(self, session):
connhash = self.calc_connhash(session["stream"]).encode("hex")
backend_user = self.session.query(User).filter(
User.username == session["backend_username"]).first()
conn = Connection(ip=session["ip"], user=session["user"],
date=session["date"], password=session["pass"],
stream=json.dumps(session["stream"]),
connhash=connhash, backend_user_id=backend_user.id)
conn.user = filter_ascii(conn.user)
conn.password = filter_ascii(conn.password)
if self.do_ip_to_asn_resolution:
range = self.get_ip_range(conn.ip)
if range:
conn.country = range.country
conn.city = range.city
conn.lat = range.latitude
conn.lon = range.longitude
conn.asn = range.asn
self.session.add(conn)
self.session.flush() # to get id
network_id = None
samples = []
urls = []
for sample_json in session["samples"]:
# Ignore junk - may clean up the db a bit
if sample_json["length"] < 2000:
continue
sample, url = self.create_url_sample(sample_json)
if sample:
if network_id == None and sample.network_id != None:
network_id = sample.network_id
samples.append(sample)
if url:
if network_id == None and url.network_id != None:
network_id = url.network_id
conn.urls.append(url)
urls.append(url)
# Find previous connections
# A connection is associated when:
# - same honeypot/user
# - connection happened as long as 120s before
# - same client ip OR same username/password combo
assoc_timediff = 120
assoc_timediff_sameip = 3600
previous_conns = (self.session.query(Connection).
filter(
or_(
and_(
Connection.date > (conn.date - assoc_timediff),
Connection.user == conn.user,
Connection.password == conn.password
),
and_(
Connection.date > (conn.date - assoc_timediff_sameip),
Connection.ip == conn.ip
)
),
Connection.backend_user_id == conn.backend_user_id,
Connection.id != conn.id).all())
for prev in previous_conns:
if network_id == None and prev.network_id != None:
network_id = prev.network_id
conn.conns_before.append(prev)
# Check connection against all tags
tags = self.session.query(Tag).all()
for tag in tags:
json_obj = conn.json(depth = 0)
json_obj["text_combined"] = filter_ascii(json_obj["text_combined"])
if simple_eval(tag.code, names=json_obj) == True:
self.db.link_conn_tag(conn.id, tag.id)
# Only create new networks for connections with urls or associtaed conns,
# to prevent the creation of thousands of networks
# NOTE: only conns with network == NULL will get their network updated
# later so whe should only create a network where we cannot easily
# change it later
haslogin = conn.user != None and conn.user != ""
if (len(conn.urls) > 0 or len(previous_conns) > 0) and network_id == None and haslogin:
print(" --- create network --- ")
network_id = self.create_network().id
# Update network on self
conn.network_id = network_id
# Update network on all added Urls
for url in urls:
if url.network_id == None:
url.network_id = network_id
# Update network on all added Samples
for sample in samples:
if sample.network_id == None:
sample.network_id = network_id
# Update network on all previous connections withut one
if network_id != None:
for prev in previous_conns:
if prev.network_id == None:
prev.network_id = network_id
# Update number of first conns on network
if len(prev.conns_before) == 0:
conn.network.nb_firstconns += 1
self.session.flush()
# Check for Malware type
# only if our network exists AND has no malware associated
if conn.network != None and conn.network.malware == None:
# Find connections with similar connhash
similar_conns = (self.session.query(Connection)
.filter(func.length(Connection.connhash) == len(connhash))
.all())
min_sim = 2
min_conn = None
for similar in similar_conns:
if similar.network_id != None:
c1 = connhash.decode("hex")
c2 = similar.connhash.decode("hex")
sim = self.calc_connhash_similiarity(c1, c2)
if sim < min_sim and similar.network.malware != None:
min_sim = sim
min_conn = similar
# 0.9: 90% or more words in session are equal
# think this is probably the same kind of malware
# doesn't need to be the same botnet though!
if min_sim < 0.9:
conn.network.malware = min_conn.network.malware
else:
conn.network.malware = Malware()
conn.network.malware.name = random.choice(ANIMAL_NAMES)
self.session.add(conn.network.malware)
self.session.flush()
# Update network number of first connections
if len(previous_conns) == 0 and conn.network_id != None:
conn.network.nb_firstconns += 1
return conn.json(depth=1)
@db_wrapper
def create_network(self):
net = Network()
self.session.add(net)
self.session.flush()
return net
def create_url_sample(self, f):
url = self.session.query(Url).filter(Url.url==f["url"]).first()
if url == None:
url_ip = None
url_asn = None
url_country = None
if self.do_ip_to_asn_resolution:
url_ip, url_range = self.get_url_info(f["url"])
if url_range:
url_asn = url_range.asn_id
url_country = url_range.country
url = Url(url=f["url"], date=f["date"], ip=url_ip, asn_id=url_asn, country=url_country)
self.session.add(url)
if f["sha256"] != None:
sample = self.session.query(Sample).filter(Sample.sha256 == f["sha256"]).first()
if sample == None:
result = None
try:
if self.vt != None:
vtobj = self.vt.query_hash_sha256(f["sha256"])
if vtobj:
result = str(vtobj["positives"]) + "/" + str(vtobj["total"]) + " " + self.vt.get_best_result(vtobj)
except:
pass
sample = Sample(sha256=f["sha256"], name=f["name"], length=f["length"],
date=f["date"], info=f["info"], result=result)
self.session.add(sample)
if sample.network_id != None and url.network_id == None:
url.network_id = sample.network_id
if sample.network_id == None and url.network_id != None:
sample.network_id = url.network_id
else:
sample = None
url.sample = sample
return sample, url
@db_wrapper
def put_sample(self, data):
sha256 = hashlib.sha256(data).hexdigest()
self.db.put_sample_data(sha256, data)
if config.get("cuckoo_enabled"):
self.cuckoo.upload(os.path.join(config.get("sample_dir"), sha256), sha256)
elif config.get("submit_to_vt"):
self.vt.upload_file(os.path.join(config.get("sample_dir"), sha256), sha256)
@db_wrapper
def update_vt_result(self, sample_sha):
sample = self.session.query(Sample).filter(Sample.sha256 == sample_sha).first()
if sample:
vtobj = self.vt.query_hash_sha256(sample_sha)
if vtobj:
sample.result = str(vtobj["positives"]) + "/" + str(vtobj["total"]) + " " + self.vt.get_best_result(vtobj)
return sample.json(depth=1)
return None