[New Rules] UEBA GItHub BBRs and Rules

rules/integrations/github/execution_github_app_deleted.toml

@@ -0,0 +1,45 @@
+[metadata]
+creation_date = "2023/10/11"
+integration = ["github"]
+maturity = "production"
+min_stack_comments = "New fields added: required_fields, related_integrations, setup"
+min_stack_version = "8.3.0"
+updated_date = "2023/10/11"
+
+[rule]
+author = ["Elastic"]
+description = """
+Detects the deletion of a GitHub app either from a repo or an organization.
+"""
+from = "now-9m"
+index = ["logs-github.audit-*"]
+language = "eql"
+license = "Elastic License v2"
+name = "GitHub App Deleted"
+risk_score = 21
+rule_id = "fd01b949-81be-46d5-bcf8-284395d5f56d"
+severity = "low"
+tags = ["Domain: Cloud",
+        "Use Case: Threat Detection",
+        "Tactic: Execution",
+        "Data Source: Github"
+        ]
+timestamp_override = "event.ingested"
+type = "eql"
+
+query = '''
+configuration where event.dataset == "github.audit" and github.category == "integration_installation" and event.type== "deletion"
+'''
+
+[[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/"

rules/integrations/github/impact_github_member_removed_from_organization.toml

@@ -0,0 +1,45 @@
+[metadata]
+creation_date = "2023/10/11"
+integration = ["github"]
+maturity = "production"
+min_stack_comments = "New fields added: required_fields, related_integrations, setup"
+min_stack_version = "8.3.0"
+updated_date = "2023/10/11"
+
+[rule]
+author = ["Elastic"]
+description = """
+A member was removed or their invitation to join was removed from a GitHub Organization.
+"""
+from = "now-9m"
+index = ["logs-github.audit-*"]
+language = "eql"
+license = "Elastic License v2"
+name = "Member Removed From GitHub Organization"
+risk_score = 21
+rule_id = "095b6a58-8f88-4b59-827c-ab584ad4e759"
+severity = "low"
+tags = ["Domain: Cloud",
+        "Use Case: Threat Detection",
+        "Tactic: Impact",
+        "Data Source: Github"
+        ]
+timestamp_override = "event.ingested"
+type = "eql"
+
+query = '''
+onfiguration where event.dataset == "github.audit" and event.action == "org.remove_member"
+'''
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1531"
+name = "Account Access Removal"
+reference = "https://attack.mitre.org/techniques/T1531/"
+
+
+[rule.threat.tactic]
+id = "TA0040"
+name = "Impact"
+reference = "https://attack.mitre.org/tactics/TA0040/"

rules/integrations/github/persistence_github_new_user_added_to_organization.toml

@@ -0,0 +1,48 @@
+[metadata]
+creation_date = "2023/10/11"
+integration = ["github"]
+maturity = "production"
+min_stack_comments = "New fields added: required_fields, related_integrations, setup"
+min_stack_version = "8.3.0"
+updated_date = "2023/10/11"
+
+[rule]
+author = ["Elastic"]
+description = """
+A new user was added to a GitHub organization.
+"""
+from = "now-9m"
+index = ["logs-github.audit-*"]
+language = "eql"
+license = "Elastic License v2"
+name = "New User Added To GitHub Organization"
+risk_score = 21
+rule_id = "61336fe6-c043-4743-ab6e-41292f439603"
+severity = "low"
+tags = ["Domain: Cloud",
+        "Use Case: Threat Detection",
+        "Tactic: Persistence",
+        "Data Source: Github"
+        ]
+timestamp_override = "event.ingested"
+type = "eql"
+
+query = '''
+configuration where event.dataset == "github.audit" and event.action == "org.add_member"
+'''
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1098"
+name = "Account Manipulation"
+reference = "https://attack.mitre.org/techniques/T1098/"
+[[rule.threat.technique.subtechnique]]
+id = "T1098.001"
+name = "Additional Cloud Credentials"
+reference = "https://attack.mitre.org/techniques/T1098/001/"
+
+[rule.threat.tactic]
+id = "TA0003"
+name = "Persistence"
+reference = "https://attack.mitre.org/tactics/TA0003/"

rules_building_block/execution_github_high_number_of_cloned_repos_from_pat.toml

@@ -0,0 +1,50 @@
+[metadata]
+creation_date = "2023/10/11"
+integration = ["github"]
+maturity = "production"
+min_stack_comments = "New fields added: required_fields, related_integrations, setup"
+min_stack_version = "8.3.0"
+updated_date = "2023/10/11"
+bypass_bbr_timing = true
+
+[rule]
+author = ["Elastic"]
+description = """
+Detects a high number of repo clone events originating from a single personal access token within a 5 minute interval.
+"""
+from = "now-9m"
+index = ["logs-github.audit-*"]
+language = "eql"
+license = "Elastic License v2"
+name = "High Number of Cloned GitHub Repos From PAT"
+risk_score = 21
+rule_id = "fb0afac5-bbd6-49b0-b4f8-44e5381e1587"
+severity = "low"
+tags = ["Domain: Cloud",
+        "Use Case: Threat Detection",
+        "Tactic: Execution",
+        "Rule Type: BBR",
+        "Data Source: Github"
+        ]
+timestamp_override = "event.ingested"
+type = "eql"
+building_block_type = "default"
+
+query = '''
+sequence by github.hashed_token with maxspan=5m
+ [configuration where event.dataset == "github.audit" and event.action == "git.clone" 
+ and github.programmatic_access_type in ("OAuth access token", "Fine-grained personal access token")] with runs=25
+'''
+
+[[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/"

rules_building_block/execution_github_new_application_interaction_for_pat.toml

@@ -0,0 +1,59 @@
+[metadata]
+creation_date = "2023/10/11"
+integration = ["github"]
+maturity = "production"
+min_stack_comments = "Multiple field support in the New Terms rule type was added in Elastic 8.6"
+min_stack_version = "8.6.0"
+updated_date = "2023/10/11"
+bypass_bbr_timing = true
+
+[rule]
+author = ["Elastic"]
+description = """
+Detects a new application interaction event for a GitHub PAT not seen in the last 30 days.
+"""
+from = "now-9m"
+index = ["logs-github.audit-*"]
+language = "kuery"
+license = "Elastic License v2"
+name = "New Application Interaction For GitHub PAT"
+risk_score = 21
+rule_id = "9dc8ffb9-90ff-4fd1-8d25-1823eb347dad"
+severity = "low"
+tags = ["Domain: Cloud",
+        "Use Case: Threat Detection",
+        "Tactic: Execution",
+        "Rule Type: BBR",
+        "Data Source: Github"
+        ]
+timestamp_override = "event.ingested"
+type = "new_terms"
+building_block_type = "default"
+
+query = '''
+event.dataset: "github.audit" and event.category : "configuration" and 
+github.integration:* and github.hashed_token:* 
+and github.programmatic_access_type : ("OAuth access token" or "Fine-grained personal access token")
+'''
+
+[[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.new_terms]
+field = "new_terms_fields"
+value = ["github.integration", "github.hashed_token"]
+
+[[rule.new_terms.history_window_start]]
+field = "history_window_start"
+value = "now-30d"

rules_building_block/execution_github_new_event_action_for_pat.toml

@@ -0,0 +1,59 @@
+[metadata]
+creation_date = "2023/10/11"
+integration = ["github"]
+maturity = "production"
+min_stack_comments = "Multiple field support in the New Terms rule type was added in Elastic 8.6"
+min_stack_version = "8.6.0"
+updated_date = "2023/10/11"
+bypass_bbr_timing = true
+
+[rule]
+author = ["Elastic"]
+description = """
+Detects a new event.action for a GitHub PAT not seen in the last 30 days.
+"""
+from = "now-9m"
+index = ["logs-github.audit-*"]
+language = "kuery"
+license = "Elastic License v2"
+name = "New event.action For A GitHub PAT"
+risk_score = 21
+rule_id = "ce08b55a-f67d-4804-92b5-617b0fe5a5b5"
+severity = "low"
+tags = ["Domain: Cloud",
+        "Use Case: Threat Detection",
+        "Tactic: Execution",
+        "Rule Type: BBR",
+        "Data Source: Github"
+        ]
+timestamp_override = "event.ingested"
+type = "new_terms"
+building_block_type = "default"
+
+query = '''
+    event.dataset: "github.audit" and event.category : "configuration" and
+    event.action:* and github.hashed_token:* 
+    and github.programmatic_access_type : ("OAuth access token" or "Fine-grained personal access token")
+'''
+
+[[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.new_terms]
+field = "new_terms_fields"
+value = ["event.action", "github.hashed_token"]
+
+[[rule.new_terms.history_window_start]]
+field = "history_window_start"
+value = "now-30d"

rules_building_block/execution_github_new_repo_interaction_for_pat.toml

@@ -0,0 +1,59 @@
+[metadata]
+creation_date = "2023/10/11"
+integration = ["github"]
+maturity = "production"
+min_stack_comments = "Multiple field support in the New Terms rule type was added in Elastic 8.6"
+min_stack_version = "8.6.0"
+updated_date = "2023/10/11"
+bypass_bbr_timing = true
+
+[rule]
+author = ["Elastic"]
+description = """
+Detects a new repo interaction for a GitHub PAT not seen in the last 30 days.
+"""
+from = "now-9m"
+index = ["logs-github.audit-*"]
+language = "kuery"
+license = "Elastic License v2"
+name = "New Repo Interaction For GitHub PAT"
+risk_score = 21
+rule_id = "1e9b271c-8caa-4e20-aed8-e91e34de9283"
+severity = "low"
+tags = ["Domain: Cloud",
+        "Use Case: Threat Detection",
+        "Tactic: Execution",
+        "Rule Type: BBR",
+        "Data Source: Github"
+        ]
+timestamp_override = "event.ingested"
+type = "new_terms"
+building_block_type = "default"
+
+query = '''
+event.dataset: "github.audit" and event.category : "configuration" 
+and github.repo:* and github.hashed_token:* 
+and github.programmatic_access_type : ("OAuth access token" or "Fine-grained personal access token")
+'''
+
+[[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.new_terms]
+field = "new_terms_fields"
+value = ["github.repo", "github.hashed_token"]
+
+[[rule.new_terms.history_window_start]]
+field = "history_window_start"
+value = "now-30d"