Terrance DeJesus
141b00ec41
* initial commit with eggshell mitre mapping added
* adding updated rules
* [Rule Tuning] MITRE for GCP rules
I've added Mitre references for the 4 GCP rules missing. Changed 3 of the rules from "Impact" to "Defense Evasion" based on the technique used and it's matched tactic.
* [Rule Tuning] Endgame Rule name updates for Mitre
Updated Endgame rule names for those with Mitre tactics to match the tactics.
* Update rules/integrations/aws/persistence_redshift_instance_creation.toml
Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
* Update rules/integrations/aws/exfiltration_rds_snapshot_restored.toml
Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
* adding 10 updated rules for google_workspace, ml and o365
* adding 22 rule updates for mitre att&ck mappings
* adding 24 rule updates related mainly to ML rules
* adding 3 rules related to detection via ML
* adding adjustments
* adding adjustments with solutions to recent pytest errors
* removed tabs from tags
* adjusted mappings and added techniques
* adjusted endgame rule mappings per review
* adjusted names to match different tactics
* added execution and defense evasion tag
* adjustments to address errors from merging with main
* added newlines to rules missing them at the end of the file
Co-authored-by: imays11 <59296946+imays11@users.noreply.github.com>
Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
Removed changes from:
- 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/ml/ml_linux_anomalous_compiler_activity.toml
- rules/ml/ml_linux_anomalous_metadata_process.toml
- rules/ml/ml_linux_anomalous_metadata_user.toml
- rules/ml/ml_linux_anomalous_process_all_hosts.toml
- rules/ml/ml_linux_anomalous_sudo_activity.toml
- rules/ml/ml_linux_anomalous_user_name.toml
- rules/ml/ml_linux_system_information_discovery.toml
- rules/ml/ml_linux_system_network_configuration_discovery.toml
- rules/ml/ml_linux_system_network_connection_discovery.toml
- rules/ml/ml_linux_system_process_discovery.toml
- rules/ml/ml_linux_system_user_discovery.toml
- rules/ml/ml_rare_process_by_host_linux.toml
- rules/ml/ml_rare_process_by_host_windows.toml
- rules/ml/ml_suspicious_login_activity.toml
- rules/ml/ml_windows_anomalous_metadata_process.toml
- rules/ml/ml_windows_anomalous_metadata_user.toml
- rules/ml/ml_windows_anomalous_path_activity.toml
- rules/ml/ml_windows_anomalous_process_all_hosts.toml
- rules/ml/ml_windows_anomalous_process_creation.toml
- rules/ml/ml_windows_anomalous_script.toml
- rules/ml/ml_windows_anomalous_service.toml
- rules/ml/ml_windows_anomalous_user_name.toml
- rules/ml/ml_windows_rare_user_runas_event.toml
- rules/ml/ml_windows_rare_user_type10_remote_login.toml
- rules/windows/defense_evasion_execution_lolbas_wuauclt.toml
(selectively cherry picked from commit e8c39d19a7)
57 lines
2.0 KiB
TOML
57 lines
2.0 KiB
TOML
[metadata]
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creation_date = "2020/12/15"
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maturity = "production"
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updated_date = "2022/07/20"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the use of the Exchange PowerShell cmdlet, Set-CASMailbox, to add a new ActiveSync allowed device.
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Adversaries may target user email to collect sensitive information.
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"""
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false_positives = ["Legitimate exchange system administration activity."]
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from = "now-9m"
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index = ["logs-endpoint.events.*", "winlogbeat-*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "New ActiveSyncAllowedDeviceID Added via PowerShell"
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note = """## Setup
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If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
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"""
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references = [
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"https://www.volexity.com/blog/2020/12/14/dark-halo-leverages-solarwinds-compromise-to-breach-organizations/",
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"https://docs.microsoft.com/en-us/powershell/module/exchange/set-casmailbox?view=exchange-ps",
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]
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risk_score = 47
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rule_id = "ce64d965-6cb0-466d-b74f-8d2c76f47f05"
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severity = "medium"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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process where event.type in ("start", "process_started") and
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process.name: ("powershell.exe", "pwsh.exe", "powershell_ise.exe") and process.args : "Set-CASMailbox*ActiveSyncAllowedDeviceIDs*"
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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 = "T1098"
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name = "Account Manipulation"
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reference = "https://attack.mitre.org/techniques/T1098/"
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[[rule.threat.technique.subtechnique]]
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id = "T1098.002"
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name = "Additional Email Delegate Permissions"
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reference = "https://attack.mitre.org/techniques/T1098/002/"
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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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