From 43f657ac4e7f586b6d2e04cfa8e2b3cb6502737b Mon Sep 17 00:00:00 2001
From: David French <56409778+threat-punter@users.noreply.github.com>
Date: Thu, 3 Sep 2020 12:15:33 -0600
Subject: [PATCH] [New Rule] User Added as Owner for Azure Application (#191)

* new-rule-user-added-as-owner-for-azure-application

* Update rule name and description

* Update rules/azure/defense_evasion_user_added_as_owner_for_azure_application.toml

Update query to remove superfluous quotes

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/azure/defense_evasion_user_added_as_owner_for_azure_application.toml

Co-authored-by: Andrew Pease <7442091+peasead@users.noreply.github.com>

* Add ATT&CK metadata to rule

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
Co-authored-by: Andrew Pease <7442091+peasead@users.noreply.github.com>
---
 ..._added_as_owner_for_azure_application.toml | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 rules/azure/persistence_user_added_as_owner_for_azure_application.toml

diff --git a/rules/azure/persistence_user_added_as_owner_for_azure_application.toml b/rules/azure/persistence_user_added_as_owner_for_azure_application.toml
new file mode 100644
index 000000000..d76a46cd8
--- /dev/null
+++ b/rules/azure/persistence_user_added_as_owner_for_azure_application.toml
@@ -0,0 +1,43 @@
+[metadata]
+creation_date = "2020/08/20"
+ecs_version = ["1.6.0"]
+maturity = "production"
+updated_date = "2020/08/20"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies when a user is added as an owner for an Azure application. An adversary may add a user account as an owner
+for an Azure application in order to grant additional permissions and modify the application's configuration using
+another account.
+"""
+from = "now-25m"
+index = ["filebeat-*"]
+language = "kuery"
+license = "Elastic License"
+name = "User Added as Owner for Azure Application"
+note = "The Azure Filebeat module must be enabled to use this rule."
+risk_score = 21
+rule_id = "774f5e28-7b75-4a58-b94e-41bf060fdd86"
+severity = "low"
+tags = ["Elastic", "Azure", "Continuous Monitoring", "SecOps", "Configuration Audit"]
+type = "query"
+
+query = '''
+event.module:azure and event.dataset:azure.auditlogs and event.category:AuditLogs and azure.auditlogs.operation_name:"Add owner to application" and event.outcome:Success
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1098"
+name = "Account Manipulation"
+reference = "https://attack.mitre.org/techniques/T1098/"
+
+
+[rule.threat.tactic]
+id = "TA0003"
+name = "Persistence"
+reference = "https://attack.mitre.org/tactics/TA0003/"
+