Add Password to Azure AD Application

Metadata

platform

Azure

contributors

Roberto Rodriguez @Cyb3rWard0g,MSTIC R&D

creation date

2021-08-05

modification date

2021-09-08

Tactics

TA0003

Techniques

T1098.001

Description

A threat actor might want to add a password to an Azure AD application for persistence purposes via Microsoft Graph APIs and the right permissions.

Run Simulation

Get OAuth Access Token

from msal import PublicClientApplication
import requests
import time

function_app_url = "https://FUNCTION_APP_NAME.azurewebsites.net"

tenant_id = "TENANT_ID"
public_client_app_id = "KATANA_CLIENT_APP_ID"
server_app_id_uri = "api://" + tenant_id + "/cloudkatana"
scope = server_app_id_uri + "/user_impersonation"

app = PublicClientApplication(
    public_client_app_id,
    authority="https://login.microsoftonline.com/" + tenant_id
)
result = app.acquire_token_interactive(scopes=[scope])
bearer_token = result['access_token']

Set Azure Function Orchestrator

endpoint = function_app_url + "/api/orchestrators/Orchestrator"

Prepare HTTP Body

data = [{'RequestId': '087e6933-3421-4056-8e63-7f411c0e9e94', 'name': 'Add Password to Azure AD Application', 'metadata': {'creationDate': '2021-08-05', 'modificationDate': '2021-09-08', 'description': 'A threat actor might want to add a password to an Azure AD application for persistence purposes via Microsoft Graph APIs and the right permissions.\n', 'contributors': ['Roberto Rodriguez @Cyb3rWard0g', 'MSTIC R&D'], 'mitreAttack': [{'technique': 'T1098.001', 'tactics': ['TA0003']}]}, 'steps': [{'schema': 'atomic', 'id': '178c34fc-c295-4b6d-a73d-f5f8ae905169', 'name': 'Add Password to Azure AD Application', 'metadata': {'creationDate': '2021-08-05', 'modificationDate': '2021-09-08', 'description': 'A threat actor might want to add a password to an Azure AD application for persistence purposes via Microsoft Graph APIs and the right permissions.\n', 'contributors': ['Roberto Rodriguez @Cyb3rWard0g', 'MSTIC R&D'], 'mitreAttack': [{'technique': 'T1098.001', 'tactics': ['TA0003']}]}, 'authorization': [{'resource': 'https://graph.microsoft.com/', 'permissionsType': 'application', 'permissions': ['Application.ReadWrite.All']}], 'execution': {'type': 'ScriptModule', 'platform': 'Azure', 'executor': 'PowerShell', 'module': {'name': 'CloudKatanaAbilities', 'version': 1.0, 'function': 'Add-CKAzADAppPassword'}, 'parameters': {}}, 'number': 1}]}]

Send HTTP Request

http_headers = {'Authorization': 'Bearer ' + bearer_token, 'Accept': 'application/json','Content-Type': 'application/json'}
results = requests.get(endpoint, json=data, headers=http_headers, stream=False).json()

time.sleep(30)

Explore Output

query_status = requests.get(results['statusQueryGetUri'], headers=http_headers, stream=False).json()
query_results = query_status['output']
query_results