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Merge pull request #674 from shreyamalviya/T1158 

Add T1158 attack technique
This commit is contained in:
Shreya Malviya 2020-06-24 17:01:22 +05:30 committed by GitHub
parent 08727305d8 a11852ce3c
commit b0a5c9ef0d
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GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 290 additions and 6 deletions
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1
monkey/common/data/post_breach_consts.py
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@ -2,3 +2,4 @@ POST_BREACH_COMMUNICATE_AS_NEW_USER = "Communicate as new user"
POST_BREACH_BACKDOOR_USER = "Backdoor user"
POST_BREACH_FILE_EXECUTION = "File execution"
POST_BREACH_SHELL_STARTUP_FILE_MODIFICATION = "Modify shell startup file"
POST_BREACH_HIDDEN_FILES = "Hide files and directories"

37
monkey/infection_monkey/post_breach/actions/hide_files.py Normal file
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@ -0,0 +1,37 @@
from common.data.post_breach_consts import POST_BREACH_HIDDEN_FILES
from infection_monkey.post_breach.pba import PBA
from infection_monkey.telemetry.post_breach_telem import PostBreachTelem
from infection_monkey.utils.hidden_files import\
get_commands_to_hide_files,\
get_commands_to_hide_folders,\
cleanup_hidden_files,\
get_winAPI_to_hide_files
from infection_monkey.utils.environment import is_windows_os
HIDDEN_FSO_CREATION_COMMANDS = [get_commands_to_hide_files,
get_commands_to_hide_folders]
class HiddenFiles(PBA):
"""
This PBA attempts to create hidden files and folders.
"""
def __init__(self):
super(HiddenFiles, self).__init__(name=POST_BREACH_HIDDEN_FILES)
def run(self):
# create hidden files and folders
for function_to_get_commands in HIDDEN_FSO_CREATION_COMMANDS:
linux_cmds, windows_cmds = function_to_get_commands()
super(HiddenFiles, self).__init__(name=POST_BREACH_HIDDEN_FILES,
linux_cmd=' '.join(linux_cmds),
windows_cmd=windows_cmds)
super(HiddenFiles, self).run()
if is_windows_os(): # use winAPI
result, status = get_winAPI_to_hide_files()
PostBreachTelem(self, (result, status)).send()
# cleanup hidden files and folders
cleanup_hidden_files(is_windows_os())

2
monkey/infection_monkey/post_breach/actions/modify_shell_startup_files.py
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@ -21,7 +21,7 @@ class ModifyShellStartupFiles(PBA):
class ShellStartupPBAGenerator():
def get_modify_shell_startup_pbas():
(cmds_for_linux, shell_startup_files_for_linux, usernames_for_linux),\
(cmds_for_windows, shell_startup_files_per_user_for_windows) = get_commands_to_modify_shell_startup_files()
(cmds_for_windows, shell_startup_files_per_user_for_windows) = get_commands_to_modify_shell_startup_files()
pbas = []

2
monkey/infection_monkey/post_breach/shell_startup_files/linux/shell_startup_files_modification.py
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@ -9,7 +9,7 @@ def get_linux_commands_to_modify_shell_startup_files():
HOME_DIR = "/home/"
# get list of usernames
USERS = subprocess.check_output(
USERS = subprocess.check_output( # noqa: DUO116
"cut -d: -f1,3 /etc/passwd | egrep ':[0-9]{4}$' | cut -d: -f1",
shell=True
).decode().split('\n')[:-1]

2
monkey/infection_monkey/post_breach/shell_startup_files/windows/shell_startup_files_modification.py
View File

@ -11,7 +11,7 @@ def get_windows_commands_to_modify_shell_startup_files():
SHELL_STARTUP_FILE_PATH_COMPONENTS = SHELL_STARTUP_FILE.split("\\")
# get list of usernames
USERS = subprocess.check_output('dir C:\\Users /b', shell=True).decode().split("\r\n")[:-1]
USERS = subprocess.check_output('dir C:\\Users /b', shell=True).decode().split("\r\n")[:-1] # noqa: DUO116
STARTUP_FILES_PER_USER = ['\\'.join(SHELL_STARTUP_FILE_PATH_COMPONENTS[:2] +
[user] +

29
monkey/infection_monkey/utils/hidden_files.py Normal file
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@ -0,0 +1,29 @@
import subprocess
from infection_monkey.utils.linux.hidden_files import\
get_linux_commands_to_hide_files,\
get_linux_commands_to_hide_folders,\
get_linux_commands_to_delete
from infection_monkey.utils.windows.hidden_files import\
get_windows_commands_to_hide_files,\
get_windows_commands_to_hide_folders,\
get_winAPI_to_hide_files,\
get_windows_commands_to_delete
from infection_monkey.utils.environment import is_windows_os
def get_commands_to_hide_files():
linux_cmds = get_linux_commands_to_hide_files()
windows_cmds = get_windows_commands_to_hide_files()
return linux_cmds, windows_cmds
def get_commands_to_hide_folders():
linux_cmds = get_linux_commands_to_hide_folders()
windows_cmds = get_windows_commands_to_hide_folders()
return linux_cmds, windows_cmds
def cleanup_hidden_files(is_windows=is_windows_os()):
subprocess.run(get_windows_commands_to_delete() if is_windows # noqa: DUO116
else ' '.join(get_linux_commands_to_delete()),
shell=True)

34
monkey/infection_monkey/utils/linux/hidden_files.py Normal file
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@ -0,0 +1,34 @@
HIDDEN_FILE = '$HOME/.monkey-hidden-file'
HIDDEN_FOLDER = '$HOME/.monkey-hidden-folder'
def get_linux_commands_to_hide_files():
return [
'touch', # create file
HIDDEN_FILE,
'&&'
'echo \"Successfully created hidden file: {}\" |'.format(HIDDEN_FILE), # output
'tee -a', # and write to file
HIDDEN_FILE
]
def get_linux_commands_to_hide_folders():
return [
'mkdir', # make directory
HIDDEN_FOLDER,
'&& touch', # create file
'{}/{}'.format(HIDDEN_FOLDER, 'some-file'), # random file in hidden folder
'&& echo \"Successfully created hidden folder: {}\" |'.format(HIDDEN_FOLDER), # output
'tee -a', # and write to file
'{}/{}'.format(HIDDEN_FOLDER, 'some-file') # random file in hidden folder
]
def get_linux_commands_to_delete():
return [
'rm', # remove
'-rf', # force delete recursively
HIDDEN_FILE,
HIDDEN_FOLDER
]

81
monkey/infection_monkey/utils/windows/hidden_files.py Normal file
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@ -0,0 +1,81 @@
import os
HOME_PATH = os.path.expanduser("~")
HIDDEN_FILE = HOME_PATH + "\\monkey-hidden-file"
HIDDEN_FOLDER = HOME_PATH + "\\monkey-hidden-folder"
HIDDEN_FILE_WINAPI = HOME_PATH + "\\monkey-hidden-file-winAPI"
def get_windows_commands_to_hide_files():
return [
'echo',
'Successfully created hidden file: {}'.format(HIDDEN_FILE), # create empty file
'>',
HIDDEN_FILE,
'&&',
'attrib', # change file attributes
'+h', # hidden attribute
'+s', # system attribute
HIDDEN_FILE,
'&&',
'type',
HIDDEN_FILE
]
def get_windows_commands_to_hide_folders():
return [
'mkdir',
HIDDEN_FOLDER, # make directory
'&&',
'attrib',
'+h', # hidden attribute
'+s', # system attribute
HIDDEN_FOLDER, # change file attributes
'&&',
'echo',
'Successfully created hidden folder: {}'.format(HIDDEN_FOLDER),
'>',
'{}\\{}'.format(HIDDEN_FOLDER, 'some-file'),
'&&',
'type',
'{}\\{}'.format(HIDDEN_FOLDER, 'some-file')
]
def get_winAPI_to_hide_files():
import win32file
try:
fileAccess = win32file.GENERIC_READ | win32file.GENERIC_WRITE # read-write access
fileCreation = win32file.CREATE_ALWAYS # overwrite existing file
fileFlags = win32file.FILE_ATTRIBUTE_HIDDEN # make hidden
hiddenFile = win32file.CreateFile(HIDDEN_FILE_WINAPI,
fileAccess,
0, # sharing mode: 0 => can't be shared
None, # security attributes
fileCreation,
fileFlags,
0) # template file
return "Succesfully created hidden file: {}".format(HIDDEN_FILE_WINAPI), True
except Exception as err:
return str(err), False
def get_windows_commands_to_delete():
return [
'powershell.exe',
'del', # delete file
'-Force',
HIDDEN_FILE,
',',
HIDDEN_FILE_WINAPI,
';',
'rmdir', # delete folder
'-Force',
'-Recurse',
HIDDEN_FOLDER
]

5
monkey/monkey_island/cc/services/attack/attack_report.py
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@ -4,7 +4,7 @@ from monkey_island.cc.models import Monkey
from monkey_island.cc.services.attack.technique_reports import T1210, T1197, T1110, T1075, T1003, T1059, T1086, T1082
from monkey_island.cc.services.attack.technique_reports import T1145, T1105, T1065, T1035, T1129, T1106, T1107, T1188
from monkey_island.cc.services.attack.technique_reports import T1090, T1041, T1222, T1005, T1018, T1016, T1021, T1064
from monkey_island.cc.services.attack.technique_reports import T1136, T1156, T1504
from monkey_island.cc.services.attack.technique_reports import T1136, T1156, T1504, T1158
from monkey_island.cc.services.attack.attack_config import AttackConfig
from monkey_island.cc.database import mongo
from monkey_island.cc.services.reporting.report_generation_synchronisation import safe_generate_attack_report
@ -39,7 +39,8 @@ TECHNIQUES = {'T1210': T1210.T1210,
'T1064': T1064.T1064,
'T1136': T1136.T1136,
'T1156': T1156.T1156,
'T1504': T1504.T1504
'T1504': T1504.T1504,
'T1158': T1158.T1158
}
REPORT_NAME = 'new_report'

10
monkey/monkey_island/cc/services/attack/attack_schema.py
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@ -90,6 +90,16 @@ SCHEMA = {
"description": "Adversaries with a sufficient level of access "
"may create a local system, domain, or cloud tenant account."
},
"T1158": {
"title": "Hidden files and directories",
"type": "bool",
"value": True,
"necessary": False,
"link": "https://attack.mitre.org/techniques/T1158",
"description": "Adversaries can hide files and folders on the system "
"and evade a typical user or system analysis that does not "
"incorporate investigation of hidden files."
},
"T1504": {
"title": "PowerShell profile",
"type": "bool",

37
monkey/monkey_island/cc/services/attack/technique_reports/T1158.py Normal file
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@ -0,0 +1,37 @@
from monkey_island.cc.services.attack.technique_reports import AttackTechnique
from monkey_island.cc.database import mongo
from common.utils.attack_utils import ScanStatus
from common.data.post_breach_consts import POST_BREACH_HIDDEN_FILES
__author__ = "shreyamalviya"
class T1158(AttackTechnique):
tech_id = "T1158"
unscanned_msg = "Monkey did not try creating hidden files or folders."
scanned_msg = "Monkey tried creating hidden files and folders on the system but failed."
used_msg = "Monkey created hidden files and folders on the system."
query = [{'$match': {'telem_category': 'post_breach',
'data.name': POST_BREACH_HIDDEN_FILES}},
{'$project': {'_id': 0,
'machine': {'hostname': '$data.hostname',
'ips': ['$data.ip']},
'result': '$data.result'}}]
@staticmethod
def get_report_data():
data = {'title': T1158.technique_title(), 'info': []}
hidden_file_info = list(mongo.db.telemetry.aggregate(T1158.query))
status = []
for pba_node in hidden_file_info:
status.append(pba_node['result'][1])
status = (ScanStatus.USED.value if any(status) else ScanStatus.SCANNED.value)\
if status else ScanStatus.UNSCANNED.value
data.update(T1158.get_base_data_by_status(status))
data.update({'info': hidden_file_info})
return data

11
monkey/monkey_island/cc/services/config_schema.py
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@ -167,6 +167,14 @@ SCHEMA = {
],
"title": "Modify shell startup files",
"attack_techniques": ["T1156", "T1504"]
},
{
"type": "string",
"enum": [
"HiddenFiles"
],
"title": "Hidden files and directories",
"attack_techniques": ["T1158"]
}
],
},
@ -388,7 +396,8 @@ SCHEMA = {
"default": [
"BackdoorUser",
"CommunicateAsNewUser",
"ModifyShellStartupFiles"
"ModifyShellStartupFiles",
"HiddenFiles"
],
"description": "List of actions the Monkey will run post breach"
},

45
monkey/monkey_island/cc/ui/src/components/attack/techniques/T1158.js Normal file
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@ -0,0 +1,45 @@
import React from 'react';
import ReactTable from 'react-table';
import {renderMachineFromSystemData, ScanStatus} from './Helpers';
import MitigationsComponent from './MitigationsComponent';
class T1158 extends React.Component {
constructor(props) {
super(props);
}
static getColumns() {
return ([{
columns: [
{ Header: 'Machine',
id: 'machine',
accessor: x => renderMachineFromSystemData(x.machine),
style: {'whiteSpace': 'unset'}},
{ Header: 'Result',
id: 'result',
accessor: x => x.result,
style: {'whiteSpace': 'unset'}}
]
}])
}
render() {
return (
<div>
<div>{this.props.data.message}</div>
<br/>
{this.props.data.status === ScanStatus.USED ?
<ReactTable
columns={T1158.getColumns()}
data={this.props.data.info}
showPagination={false}
defaultPageSize={this.props.data.info.length}
/> : ''}
<MitigationsComponent mitigations={this.props.data.mitigations}/>
</div>
);
}
}
export default T1158;