Justin Ibarra
3311168e28
* Expand timestamp_override tests
* removed timestamp_override from eql sequence rules
* add config entry for eql rules with beats index and t_o
* add timestamp_override to missing fields
Removed changes from:
- rules/cross-platform/impact_hosts_file_modified.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 6bdfddac8e)
59 lines
2.0 KiB
TOML
59 lines
2.0 KiB
TOML
[metadata]
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creation_date = "2020/11/18"
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maturity = "production"
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updated_date = "2022/03/31"
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[rule]
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author = ["Elastic"]
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description = "Identifies script engines creating files in the startup folder, or the creation of script files in the startup folder."
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Persistent Scripts in the Startup Directory"
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note = """## Config
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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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risk_score = 47
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rule_id = "f7c4dc5a-a58d-491d-9f14-9b66507121c0"
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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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file where event.type != "deletion" and user.domain != "NT AUTHORITY" and
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/* detect shortcuts created by wscript.exe or cscript.exe */
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(file.path : "C:\\*\\Programs\\Startup\\*.lnk" and
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process.name : ("wscript.exe", "cscript.exe")) or
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/* detect vbs or js files created by any process */
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file.path : ("C:\\*\\Programs\\Startup\\*.vbs",
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"C:\\*\\Programs\\Startup\\*.vbe",
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"C:\\*\\Programs\\Startup\\*.wsh",
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"C:\\*\\Programs\\Startup\\*.wsf",
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"C:\\*\\Programs\\Startup\\*.js")
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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 = "T1547"
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name = "Boot or Logon Autostart Execution"
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reference = "https://attack.mitre.org/techniques/T1547/"
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[[rule.threat.technique.subtechnique]]
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id = "T1547.001"
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name = "Registry Run Keys / Startup Folder"
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reference = "https://attack.mitre.org/techniques/T1547/001/"
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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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