/
image_load_dll_azure_microsoft_account_token_provider_dll_load.yml
57 lines (57 loc) · 2.51 KB
/
image_load_dll_azure_microsoft_account_token_provider_dll_load.yml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
title: Potential Azure Browser SSO Abuse
id: 50f852e6-af22-4c78-9ede-42ef36aa3453
status: test
description: |
Detects abusing Azure Browser SSO by requesting OAuth 2.0 refresh tokens for an Azure-AD-authenticated Windows user (i.e. the machine is joined to Azure AD and a user logs in with their Azure AD account) wanting to perform SSO authentication in the browser.
An attacker can use this to authenticate to Azure AD in a browser as that user.
references:
- https://posts.specterops.io/requesting-azure-ad-request-tokens-on-azure-ad-joined-machines-for-browser-sso-2b0409caad30
author: Den Iuzvyk
date: 2020/07/15
modified: 2023/04/18
tags:
- attack.defense_evasion
- attack.privilege_escalation
- attack.t1574.002
logsource:
category: image_load
product: windows
detection:
selection:
ImageLoaded: 'C:\Windows\System32\MicrosoftAccountTokenProvider.dll'
filter_main_bgtaskhost:
Image|startswith:
- 'C:\Windows\System32\'
- 'C:\Windows\SysWOW64\'
Image|endswith: '\BackgroundTaskHost.exe'
# CommandLine|contains: '-ServerNameBackgroundTaskHost.WebAccountProvider'
filter_optional_devenv:
Image|startswith:
- 'C:\Program Files\Microsoft Visual Studio\'
- 'C:\Program Files (x86)\Microsoft Visual Studio\'
Image|endswith: '\IDE\devenv.exe'
filter_optional_ie:
Image:
- 'C:\Program Files (x86)\Internet Explorer\iexplore.exe'
- 'C:\Program Files\Internet Explorer\iexplore.exe'
filter_optional_edge_1:
- Image|startswith: 'C:\Program Files (x86)\Microsoft\EdgeWebView\Application\'
- Image|endswith: '\WindowsApps\MicrosoftEdge.exe'
- Image:
- 'C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe'
- 'C:\Program Files\Microsoft\Edge\Application\msedge.exe'
filter_optional_edge_2:
Image|startswith:
- 'C:\Program Files (x86)\Microsoft\EdgeCore\'
- 'C:\Program Files\Microsoft\EdgeCore\'
Image|endswith:
- '\msedge.exe'
- '\msedgewebview2.exe'
filter_optional_onedrive:
Image|endswith: '\AppData\Local\Microsoft\OneDrive\OneDrive.exe'
filter_optional_null:
Image: null
condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
- False positives are expected since this rules is only looking for the DLL load event. This rule is better used in correlation with related activity
level: low