Update lateral_movement_mount_hidden_or_webdav_share_net.toml (#2385)

rule tune: update by adding MITRE tactic/technique/subtechnique : Initial Access>Valid Accounts>Local Accounts. Added new tag for new tactic : Initial Access

rules/windows/lateral_movement_mount_hidden_or_webdav_share_net.toml

@@ -3,7 +3,7 @@ creation_date = "2020/11/02"
 maturity = "production"
 min_stack_comments = "New fields added: required_fields, related_integrations, setup"
 min_stack_version = "8.3.0"
-updated_date = "2022/09/15"
+updated_date = "2022/11/01"
 
 [rule]
 author = ["Elastic"]
@@ -23,7 +23,7 @@ If enabling an EQL rule on a non-elastic-agent index (such as beats) for version
 risk_score = 47
 rule_id = "c4210e1c-64f2-4f48-b67e-b5a8ffe3aa14"
 severity = "medium"
-tags = ["Elastic", "Host", "Windows", "Threat Detection", "Lateral Movement"]
+tags = ["Elastic", "Host", "Windows", "Threat Detection", "Initial Access", "Lateral Movement"]
 timestamp_override = "event.ingested"
 type = "eql"
 
@@ -56,4 +56,21 @@ reference = "https://attack.mitre.org/techniques/T1021/002/"
 id = "TA0008"
 name = "Lateral Movement"
 reference = "https://attack.mitre.org/tactics/TA0008/"
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1078"
+name = "Valid Accounts"
+reference = "https://attack.mitre.org/techniques/T1078/"
+[[rule.threat.technique.subtechnique]]
+id = "T1078.003"
+name = "Local Accounts"
+reference = "https://attack.mitre.org/techniques/T1078/003/"
+
+
+
+[rule.threat.tactic]
+id = "TA0001"
+name = "Initial Access"
+reference = "https://attack.mitre.org/tactics/TA0001/"