Mika Ayenson
62298d92f4
* Convert config header to setup in note field
* Parse note field into separate setup and note field with marko gfm
* only validate and parse note on elastic authored rules and add CLI description for new DR_BYPASS_NOTE_VALIDATION_AND_PARSE environment variable
Co-authored-by: brokensound77 <brokensound77@users.noreply.github.com>
Removed changes from:
- rules/cross-platform/impact_hosts_file_modified.toml
- rules/integrations/google_workspace/application_added_to_google_workspace_domain.toml
- rules/integrations/google_workspace/domain_added_to_google_workspace_trusted_domains.toml
- rules/integrations/google_workspace/google_workspace_admin_role_deletion.toml
- rules/integrations/google_workspace/google_workspace_mfa_enforcement_disabled.toml
- rules/integrations/google_workspace/google_workspace_policy_modified.toml
- rules/integrations/google_workspace/mfa_disabled_for_google_workspace_organization.toml
- rules/integrations/google_workspace/persistence_google_workspace_admin_role_assigned_to_user.toml
- rules/integrations/google_workspace/persistence_google_workspace_api_access_granted_via_domain_wide_delegation_of_authority.toml
- rules/integrations/google_workspace/persistence_google_workspace_custom_admin_role_created.toml
- rules/integrations/google_workspace/persistence_google_workspace_role_modified.toml
- rules/integrations/kubernetes/execution_user_exec_to_pod.toml
- rules/windows/credential_access_lsass_memdump_file_created.toml
- rules/windows/defense_evasion_adding_the_hidden_file_attribute_with_via_attribexe.toml
- rules/windows/defense_evasion_execution_lolbas_wuauclt.toml
- rules/windows/defense_evasion_suspicious_certutil_commands.toml
- rules/windows/execution_command_shell_started_by_svchost.toml
(selectively cherry picked from commit a52751494e)
60 lines
2.0 KiB
TOML
60 lines
2.0 KiB
TOML
[metadata]
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creation_date = "2020/06/04"
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maturity = "production"
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updated_date = "2021/07/20"
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integration = "aws"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the creation of an AWS Elastic Compute Cloud (EC2) network access control list (ACL) or an entry in a network
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ACL with a specified rule number.
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"""
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false_positives = [
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"""
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Network ACL's may be created by a network administrator. Verify whether the user identity, user agent, and/or
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hostname should be making changes in your environment. Network ACL creations by unfamiliar users or hosts should
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be investigated. If known behavior is causing false positives, it can be exempted from the rule.
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""",
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]
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from = "now-60m"
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index = ["filebeat-*", "logs-aws*"]
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interval = "10m"
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language = "kuery"
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license = "Elastic License v2"
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name = "AWS EC2 Network Access Control List Creation"
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note = """## Setup
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The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule."""
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references = [
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"https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/create-network-acl.html",
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"https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateNetworkAcl.html",
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"https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/create-network-acl-entry.html",
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"https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateNetworkAclEntry.html",
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]
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risk_score = 21
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rule_id = "39144f38-5284-4f8e-a2ae-e3fd628d90b0"
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severity = "low"
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tags = ["Elastic", "Cloud", "AWS", "Continuous Monitoring", "SecOps", "Network Security"]
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timestamp_override = "event.ingested"
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type = "query"
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query = '''
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event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and event.action:(CreateNetworkAcl or CreateNetworkAclEntry) and event.outcome:success
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1133"
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name = "External Remote Services"
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reference = "https://attack.mitre.org/techniques/T1133/"
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[rule.threat.tactic]
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id = "TA0003"
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name = "Persistence"
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reference = "https://attack.mitre.org/tactics/TA0003/"
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