shashank-elastic
66 lines
2.3 KiB
TOML
66 lines
2.3 KiB
TOML
[metadata]
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creation_date = "2021/11/27"
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integration = ["windows"]
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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 = "2023/10/23"
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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 LSASS process clone via PssCaptureSnapShot where the parent process is the initial LSASS
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process instance. This may indicate an attempt to evade detection and dump LSASS memory for credential access.
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"""
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from = "now-9m"
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index = ["winlogbeat-*", "logs-system.*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Potential LSASS Clone Creation via PssCaptureSnapShot"
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references = [
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"https://www.matteomalvica.com/blog/2019/12/02/win-defender-atp-cred-bypass/",
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"https://medium.com/@Achilles8284/the-birth-of-a-process-part-2-97c6fb9c42a2",
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]
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risk_score = 73
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rule_id = "a16612dd-b30e-4d41-86a0-ebe70974ec00"
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setup = """
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This is meant to run only on datasources using Windows security event 4688 that captures the process clone creation.
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If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2,
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events will not define `event.ingested` and default fallback for EQL rules was not added until version 8.2.
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Hence for this rule to work effectively, users will need to add a custom ingest pipeline to populate
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`event.ingested` to @timestamp.
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For more details on adding a custom ingest pipeline refer - https://www.elastic.co/guide/en/fleet/current/data-streams-pipeline-tutorial.html
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"""
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severity = "high"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Credential Access", "Data Source: Sysmon Only"]
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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.code:"4688" and
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process.executable : "?:\\Windows\\System32\\lsass.exe" and
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process.parent.executable : "?:\\Windows\\System32\\lsass.exe"
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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 = "T1003"
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name = "OS Credential Dumping"
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reference = "https://attack.mitre.org/techniques/T1003/"
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[[rule.threat.technique.subtechnique]]
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id = "T1003.001"
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name = "LSASS Memory"
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reference = "https://attack.mitre.org/techniques/T1003/001/"
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[rule.threat.tactic]
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id = "TA0006"
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name = "Credential Access"
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reference = "https://attack.mitre.org/tactics/TA0006/"
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