Jonhnathan
3ea3e5a9fd
* [New Rules] [BBR] Windows Deprecated ERs Conversion - 2 * Update defense_evasion_unsigned_bits_client.toml * Update rules_building_block/defense_evasion_suspicious_msiexec_execution.toml Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> * . --------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
61 lines
1.8 KiB
TOML
61 lines
1.8 KiB
TOML
[metadata]
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creation_date = "2023/09/27"
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integration = ["endpoint"]
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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 = "2023/09/27"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies an unsigned Windows Background Intelligent Transfer Service (BITS) client process. Attackers may abuse BITS
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functionality to download or upload data using the BITS service.
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"""
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references = [
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"https://web.archive.org/web/20230531215706/https://blog.menasec.net/2021/05/hunting-for-suspicious-usage-of.html",
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"https://www.elastic.co/blog/hunting-for-persistence-using-elastic-security-part-2"
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]
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from = "now-119m"
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interval = "60m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Unsigned BITS Service Client Process"
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risk_score = 21
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rule_id = "9a3884d0-282d-45ea-86ce-b9c81100f026"
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severity = "low"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Rule Type: BBR", "Data Source: Elastic Defend"]
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timestamp_override = "event.ingested"
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building_block_type = "default"
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type = "eql"
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query = '''
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library where dll.name : "Bitsproxy.dll" and process.executable != null and
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not process.code_signature.trusted == true
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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 = "T1197"
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name = "BITS Jobs"
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reference = "https://attack.mitre.org/techniques/T1197/"
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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.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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