[New Rule] Email Reported by User as Malware or Phish (#1699)

* Email Reported by User as Malware or Phish Initial Rule * Update initial_access_o365_user_reported_phish_malware.toml * Update rules/integrations/o365/initial_access_o365_user_reported_phish_malware.toml Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com> (cherry picked from commit 189c2b152c)
2022-01-27 16:30:46 -03:00
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+[metadata]
+creation_date = "2022/01/12"
+integration = "o365"
+maturity = "production"
+updated_date = "2022/01/12"
+
+[rule]
+author = ["Elastic"]
+description = """
+Detects the occurrence of emails reported as Phishing or Malware by Users. Security Awareness training is essential to
+stay ahead of scammers and threat actors, as security products can be bypassed, and the user can still receive a
+malicious message. Educating users to report suspicious messages can help identify gaps in security controls and prevent
+malware infections and Business Email Compromise attacks.
+"""
+false_positives = ["Legitimate files reported by the users"]
+from = "now-30m"
+index = ["filebeat-*", "logs-o365*"]
+language = "kuery"
+license = "Elastic License v2"
+name = "O365 Email Reported by User as Malware or Phish"
+note = """## Config
+
+The Microsoft 365 Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule."""
+references = [
+    "https://support.microsoft.com/en-us/office/use-the-report-message-add-in-b5caa9f1-cdf3-4443-af8c-ff724ea719d2?ui=en-us&rs=en-us&ad=us",
+]
+risk_score = 47
+rule_id = "5930658c-2107-4afc-91af-e0e55b7f7184"
+severity = "medium"
+tags = ["Elastic", "Cloud", "Microsoft 365", "Continuous Monitoring", "SecOps", "Initial Access"]
+timestamp_override = "event.ingested"
+type = "query"
+
+query = '''
+event.dataset:o365.audit and event.provider:SecurityComplianceCenter and event.action:AlertTriggered and rule.name:"Email reported by user as malware or phish"
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1566"
+name = "Phishing"
+reference = "https://attack.mitre.org/techniques/T1566/"
+
+    [[rule.threat.technique.subtechnique]]
+    id = "T1566.001"
+    name = "Spearphishing Attachment"
+    reference = "https://attack.mitre.org/techniques/T1566/001/"
+
+    [[rule.threat.technique.subtechnique]]
+    id = "T1566.002"
+    name = "Spearphishing Link"
+    reference = "https://attack.mitre.org/techniques/T1566/002/"
+
+[rule.threat.tactic]
+id = "TA0001"
+name = "Initial Access"
+reference = "https://attack.mitre.org/tactics/TA0001/"
+