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[Rule Tuning] Entra ID OAuth user_impersonation Scope for Unusual User and Client #5462

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[Rule Tuning] Entra ID OAuth user_impersonation Scope for Unusual User and Client #5462

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[Rule Tuning] Entra ID OAuth user_impersonation Scope for Unusual Use…
terrancedejesus Dec 15, 2025
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Merge branch 'main' into terrancedejesus/issue5461
terrancedejesus Dec 15, 2025
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Merge branch 'main' into terrancedejesus/issue5461
terrancedejesus Dec 17, 2025
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16 changes: 13 additions & 3 deletions rules/integrations/azure/initial_access_entra_id_oauth_user_impersonation_scope.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
creation_date = "2025/07/03"
integration = ["azure"]
maturity = "production"
updated_date = "2025/10/06"
updated_date = "2025/12/15"

[rule]
author = ["Elastic"]
Expand Down Expand Up @@ -83,15 +83,25 @@ event.dataset: azure.signinlogs and
azure.signinlogs.properties.token_protection_status_details.sign_in_session_status: "unbound" and
azure.signinlogs.properties.user_type: "Member" and
azure.signinlogs.properties.conditional_access_status: "notApplied" and
not user_agent.original: Mozilla*PKeyAuth/1.0 and
not user_agent.original: (Mozilla*PKeyAuth/1.0 or Microsoft*Authentication*iPhone*) and
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@Mikaayenson Mikaayenson Dec 17, 2025

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We already exclude by operating_system. Is this iPhone filter needed?

not azure.signinlogs.properties.device_detail.operating_system: (Ios* or Android*) and
event.outcome: "success"
and not azure.signinlogs.properties.app_id: (
"a5f63c0-b750-4f38-a71c-4fc0d58b89e2" or
"6bc3b958-689b-49f5-9006-36d165f30e00" or
"66a88757-258c-4c72-893c-3e8bed4d6899" or
"cc15fd57-2c6c-4117-a88c-83b1d56b4bbe" or
"0000000c-0000-0000-c000-000000000000"
"0000000c-0000-0000-c000-000000000000" or
"0a5f63c0-b750-4f38-a71c-4fc0d58b89e2" or
"48af08dc-f6d2-435f-b2a7-069abd99c086" or
"ab9b8c07-8f02-4f72-87fa-80105867a763" or
"fc0f3af4-6835-4174-b806-f7db311fd2f3" or
"5e3ce6c0-2b1f-4285-8d4b-75ee78787346" or
"e8be65d6-d430-4289-a665-51bf2a194bda" or
"95de633a-083e-42f5-b444-a4295d8e9314" or
"d52792f4-ba38-424d-8140-ada5b883f293" or
"65d91a3d-ab74-42e6-8a2f-0add61688c74" or
"8c59ead7-d703-4a27-9e55-c96a0054c8d2"
)
'''

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