mirror of
https://github.com/valitydev/SigmaHQ.git
synced 2024-11-07 17:58:52 +00:00
31 lines
1.1 KiB
YAML
31 lines
1.1 KiB
YAML
title: Abusing Azure Browser SSO
|
|
id: 50f852e6-af22-4c78-9ede-42ef36aa3453
|
|
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.
|
|
author: Den Iuzvyk
|
|
references:
|
|
- https://posts.specterops.io/requesting-azure-ad-request-tokens-on-azure-ad-joined-machines-for-browser-sso-2b0409caad30
|
|
date: 2020/07/15
|
|
modified: 2020/12/23
|
|
logsource:
|
|
category: image_load
|
|
product: windows
|
|
status: experimental
|
|
tags:
|
|
- attack.defense_evasion
|
|
- attack.privilege_escalation
|
|
- attack.t1073 # an old one
|
|
- attack.t1574.002
|
|
detection:
|
|
condition: selection_dll and not filter_legit
|
|
selection_dll:
|
|
ImageLoaded|endswith: MicrosoftAccountTokenProvider.dll
|
|
filter_legit:
|
|
Image|endswith:
|
|
- BackgroundTaskHost.exe
|
|
- devenv.exe
|
|
- iexplore.exe
|
|
- MicrosoftEdge.exe
|
|
falsepositives:
|
|
- unknown
|
|
level: high
|