Ruben Groenewoud
4cdf52129a
* [Tuning] Win DR Tuning for UEBA * Need to get used to Windows formatting * Added additional content * Updated min stack * Added additional tuning * Fixed unit testing for KQL optimization * Update rules_building_block/discovery_internet_capabilities.toml * Additional tuning * Kuery optimization * Additional tuning * Additional tuning * Additional tuning * Additional tuning * Unit testing optimization fix * optimization * tuning * Optimization * Update rules/windows/discovery_privileged_localgroup_membership.toml * Added feedback * Update rules/windows/discovery_privileged_localgroup_membership.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> * Update rules/windows/discovery_remote_system_discovery_commands_windows.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> * Update rules/windows/discovery_system_service_discovery.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> * added host.id as additional new_terms field * Reworked a lot. * kibana.alert.rule.rule_id to non-ecs-schema.json * Fixed index by adding a dot * fixed typo * Added host.os.type:windows for signals * Added additional tag * Added Higher-Order Rule tag * Stripped down signal rules down to two * revert * Update rules/windows/discovery_admin_recon.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules/windows/discovery_enumerating_domain_trusts_via_nltest.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules_building_block/discovery_generic_registry_query.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules_building_block/discovery_system_time_discovery.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules/windows/discovery_privileged_localgroup_membership.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update discovery_generic_registry_query.toml * Readded exclusions * Added trailing wildcards for KQL * Update discovery_privileged_localgroup_membership.toml * Update rules_building_block/discovery_signal_unusual_user_host.toml Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com> * Update rules/windows/discovery_signal_unusual_discovery_signal_proc_cmdline.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> * Formatting fix --------- Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
58 lines
1.7 KiB
TOML
58 lines
1.7 KiB
TOML
[metadata]
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creation_date = "2023/01/24"
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integration = ["windows", "endpoint"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/09/21"
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bypass_bbr_timing = true
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[rule]
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author = ["Elastic"]
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building_block_type = "default"
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description = """
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Detects the usage of commonly used system time discovery techniques, which attackers may use during the reconnaissance
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phase after compromising a system.
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"""
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*", "endgame-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "System Time Discovery"
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risk_score = 21
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rule_id = "06568a02-af29-4f20-929c-f3af281e41aa"
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severity = "low"
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tags = ["Domain: Endpoint",
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"OS: Windows",
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"Use Case: Threat Detection",
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"Tactic: Discovery",
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"Data Source: Elastic Defend",
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"Data Source: Elastic Endgame",
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"Rule Type: BBR"
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]
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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 host.os.type == "windows" and event.type == "start" and
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(
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((process.name: "net.exe" or (process.name : "net1.exe" and not process.parent.name : "net.exe")) and
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process.args : "time") or
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(process.name: "w32tm.exe" and process.args: "/tz") or
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(process.name: "tzutil.exe" and process.args: "/g")
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) and not user.id : ("S-1-5-18", "S-1-5-19", "S-1-5-20")
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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 = "T1124"
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name = "System Time Discovery"
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reference = "https://attack.mitre.org/techniques/T1124/"
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[rule.threat.tactic]
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id = "TA0007"
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name = "Discovery"
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reference = "https://attack.mitre.org/tactics/TA0007/"
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