[Rule Tuning] Add Supplemental Mitre Mappings (#5876)

---------

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>
Co-authored-by: terrancedejesus <terrance.dejesus@elastic.co>
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
Co-authored-by: eric-forte-elastic <eric.forte@elastic.co>

rules/integrations/github/execution_github_app_deleted.toml

@@ -2,7 +2,7 @@
 creation_date = "2023/10/11"
 integration = ["github"]
 maturity = "production"
-updated_date = "2025/03/20"
+updated_date = "2026/03/24"
 
 [rule]
 author = ["Elastic"]
@@ -67,14 +67,31 @@ configuration where event.dataset == "github.audit" and github.category == "inte
 
 [[rule.threat]]
 framework = "MITRE ATT&CK"
+
 [[rule.threat.technique]]
 id = "T1648"
 name = "Serverless Execution"
 reference = "https://attack.mitre.org/techniques/T1648/"
 
-
 [rule.threat.tactic]
 id = "TA0002"
 name = "Execution"
 reference = "https://attack.mitre.org/tactics/TA0002/"
 
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+
+[[rule.threat.technique]]
+id = "T1562"
+name = "Impair Defenses"
+reference = "https://attack.mitre.org/techniques/T1562/"
+
+[[rule.threat.technique.subtechnique]]
+id = "T1562.001"
+name = "Disable or Modify Tools"
+reference = "https://attack.mitre.org/techniques/T1562/001/"
+
+[rule.threat.tactic]
+id = "TA0005"
+name = "Defense Evasion"
+reference = "https://attack.mitre.org/tactics/TA0005/"