Query: Sigma YAML for windows / process_creation
Matching passage: Sigma rule: Detects the use of the PhoneDeepLink parameter to potentially sideload a DLL file that does not exist. This non-existent. Logsource: windows / process_creation. Rule: title: Potential DLL Sideloading Via DeviceEnroller.EXE id: e173ad47-4388-4012-ae62-bd13f71c18a8 related: - id: ee4c5d06-3abc-48cc-8885-77f1c20f4451 type: similar status: test description: 'Detects the use of the PhoneDeepLink parameter to potentially sideload a DLL file that does not exist. This non-existent DLL file is named "ShellChromeAPI.dll". Adversaries can drop their own renamed DLL and execute it via DeviceEnroller.exe using this parameter ' references: - https://mobile.twitter.com/0gtweet/status/1564131230941122561 - https://strontic.github.io/xcyclopedia/library/DeviceEnroller.exe-24BEF0D6B0ECED36BB41831759FDE18D.html author: '@gott_cyber' date: 2022-08-29 modified: 2023-02-04 tags: - attack.privilege-escalation - attack.persistence - attack.execution - attack.stealth - attack.t1574.001 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \deviceenroller.exe - OriginalFileName: deviceenroller.exe selection_cli: CommandLine|contains: /PhoneDeepLink condition: all of selection_* falsepositives: - Unknown level: medium
Near-miss passage: Sigma rule: Detects abusing Azure Browser SSO by requesting OAuth 2.0 refresh tokens for an Azure-AD-authenticated Windows user (i.e. Logsource: windows / image_load. Rule: 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.persistence - attack.privilege-escalation - attack.execution - attack.stealth - attack.t1574.001 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 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