shashank-elastic
81 lines
2.2 KiB
TOML
81 lines
2.2 KiB
TOML
[metadata]
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bypass_bbr_timing = true
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creation_date = "2023/08/09"
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integration = ["endpoint"]
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maturity = "production"
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updated_date = "2024/05/05"
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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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Identifies instances of VLC-related DLLs which are not signed by the original developer. Attackers may name their
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payload as legitimate applications to blend into the environment, or embedding its malicious code within legitimate
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applications to deceive machine learning algorithms by incorporating authentic and benign code.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.library-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Potential Masquerading as VLC DLL"
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risk_score = 21
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rule_id = "4494c14f-5ff8-4ed2-8e99-bf816a1642fc"
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severity = "low"
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tags = [
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"Domain: Endpoint",
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"Data Source: Elastic Defend",
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"OS: Windows",
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"Use Case: Threat Detection",
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"Tactic: Defense Evasion",
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"Tactic: Persistence",
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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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library where host.os.type == "windows" and event.action == "load" and
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dll.name : ("libvlc.dll", "libvlccore.dll", "axvlc.dll") and
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not (
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dll.code_signature.subject_name : ("VideoLAN", "716F2E5E-A03A-486B-BC67-9B18474B9D51")
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and dll.code_signature.trusted == true
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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 = "T1036"
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name = "Masquerading"
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reference = "https://attack.mitre.org/techniques/T1036/"
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[[rule.threat.technique.subtechnique]]
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id = "T1036.001"
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name = "Invalid Code Signature"
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reference = "https://attack.mitre.org/techniques/T1036/001/"
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[[rule.threat.technique.subtechnique]]
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id = "T1036.005"
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name = "Match Legitimate Resource Name or Location"
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reference = "https://attack.mitre.org/techniques/T1036/005/"
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[rule.threat.tactic]
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id = "TA0005"
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name = "Defense Evasion"
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reference = "https://attack.mitre.org/tactics/TA0005/"
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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 = "T1554"
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name = "Compromise Host Software Binary"
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reference = "https://attack.mitre.org/techniques/T1554/"
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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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