Justin Ibarra
a6c5cfc418
* [Rule Tuning] Optimize query for Query Registry using Built-in Tools * reduce history window to 7d * use args vs command_line wildcards --------- Co-authored-by: brokensound77 <brokensound77@users.noreply.github.com>
73 lines
2.1 KiB
TOML
73 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2023/07/13"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "Multiple field support in the New Terms rule type was added in Elastic 8.6"
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min_stack_version = "8.6.0"
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updated_date = "2023/12/13"
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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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This rule identifies the execution of commands that can be used to query the Windows Registry. Adversaries may query the
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registry to gain situational awareness about the host, like installed security software, programs and settings.
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"""
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from = "now-24h"
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index = ["logs-endpoint.events.process*"]
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interval = "24h"
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language = "kuery"
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license = "Elastic License v2"
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name = "Query Registry using Built-in Tools"
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risk_score = 21
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rule_id = "ded09d02-0137-4ccc-8005-c45e617e8d4c"
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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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"Rule Type: BBR",
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"Data Source: Elastic Defend"
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]
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timestamp_override = "event.ingested"
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type = "new_terms"
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query = '''
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host.os.type:windows and event.category:process and event.type:start and
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(
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(process.name.caseless:"reg.exe" and process.args:"query") or
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(process.name.caseless:("powershell.exe" or "powershell_ise.exe" or "pwsh.exe") and
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process.args:(
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("get-childitem" or "Get-ChildItem" or "gci" or "dir" or "ls" or
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"get-item" or "Get-Item" or "gi" or
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"get-itemproperty" or "Get-ItemProperty" or "gp") and
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("hkcu" or "HKCU" or "hkey_current_user" or "HKEY_CURRENT_USER" or
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"hkey_local_machine" or "HKEY_LOCAL_MACHINE" or
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"hklm" or "HKLM" or registry\:\:*)
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)
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)
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)
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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 = "T1012"
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name = "Query Registry"
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reference = "https://attack.mitre.org/techniques/T1012/"
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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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[rule.new_terms]
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field = "new_terms_fields"
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value = ["host.id", "user.id"]
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[[rule.new_terms.history_window_start]]
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field = "history_window_start"
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value = "now-7d"
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