Justin Ibarra
aff7f37b92
* [Rule Tuning] Optimize query for Installation of Custom Shim Databases * add timestamp override * update query exceptions * tighten endpoint index pattern to registry --------- Co-authored-by: brokensound77 <brokensound77@users.noreply.github.com> Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
57 lines
2.2 KiB
TOML
57 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2020/09/02"
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integration = ["endpoint", "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 = "2023/12/13"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the installation of custom Application Compatibility Shim databases. This Windows functionality has been
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abused by attackers to stealthily gain persistence and arbitrary code execution in legitimate Windows processes.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.registry*", "winlogbeat-*", "logs-windows.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Installation of Custom Shim Databases"
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risk_score = 47
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rule_id = "c5ce48a6-7f57-4ee8-9313-3d0024caee10"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Persistence", "Data Source: Elastic Defend"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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registry where host.os.type == "windows" and event.type in ("creation", "change") and
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registry.path : "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\AppCompatFlags\\Custom\\*.sdb" and
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not process.executable :
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("?:\\Program Files (x86)\\DesktopCentral_Agent\\swrepository\\1\\swuploads\\SAP-SLC\\SAPSetupSLC02_14-80001954\\Setup\\NwSapSetup.exe",
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"?:\\$WINDOWS.~BT\\Sources\\SetupPlatform.exe",
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"?:\\Program Files (x86)\\SAP\\SAPsetup\\setup\\NwSapSetup.exe",
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"?:\\Program Files (x86)\\SAP\\SapSetup\\OnRebootSvc\\NWSAPSetupOnRebootInstSvc.exe",
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"?:\\Program Files (x86)\\Kaspersky Lab\\Kaspersky Security for Windows Server\\kavfs.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 = "T1546"
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name = "Event Triggered Execution"
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reference = "https://attack.mitre.org/techniques/T1546/"
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[[rule.threat.technique.subtechnique]]
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id = "T1546.011"
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name = "Application Shimming"
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reference = "https://attack.mitre.org/techniques/T1546/011/"
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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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