[New Rule] GitHub Protected Branch Settings Changed (#3054)

* new rule file * testing query change * query changed back * Update rules/integrations/github/defense_evasion_github_protected_branch_settings_changed.toml updates based on review Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> * updated integration manifests with github schema * Update defense_evasion_github_protected_branch_settings_changed.toml added event.dataset to query * added timestamp_override * changed timestamp_override to @timestamp * changed timestamp_override --------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> (cherry picked from commit 904e37b732)
2023-09-14 17:16:51 -04:00
parent 0bc9b126f6
commit 09feb8b94f
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+[metadata]
+creation_date = "2023/08/29"
+integration = ["github"]
+maturity = "production"
+min_stack_comments = "New fields added: required_fields, related_integrations, setup"
+min_stack_version = "8.3.0"
+updated_date = "2023/08/30"
+
+[rule]
+author = ["Elastic"]
+description = """
+This rule detects setting modifications for protected branches of a GitHub repository. Branch protection rules 
+can be used to enforce certain workflows or requirements before a contributor can push changes to a branch in 
+your repository. Changes to these protected branch settings should be investigated and verified as legitimate 
+activity. Unauthorized changes could be used to lower your organization's security posture and leave you exposed 
+for future attacks. 
+"""
+from = "now-9m"
+index = ["logs-github.audit-*"]
+language = "eql"
+license = "Elastic License v2"
+name = "GitHub Protected Branch Settings Changed"
+risk_score = 47
+rule_id = "07639887-da3a-4fbf-9532-8ce748ff8c50"
+severity = "medium"
+tags = ["Domain: Cloud", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Github"]
+timestamp_override = "event.ingested"
+type = "eql"
+query = '''
+configuration where event.dataset == "github.audit" 
+  and github.category == "protected_branch" and event.type == "change" 
+'''
+
+[[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/"
+