Mika Ayenson, PhD
8993d1450b
--------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> Co-authored-by: Isai <59296946+imays11@users.noreply.github.com> Co-authored-by: terrancedejesus <terrance.dejesus@elastic.co> Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com> Co-authored-by: eric-forte-elastic <eric.forte@elastic.co>
68 lines
1.8 KiB
TOML
68 lines
1.8 KiB
TOML
[metadata]
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creation_date = "2023/09/25"
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integration = ["endpoint"]
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maturity = "production"
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updated_date = "2026/03/24"
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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 the execution of DotNet ClickOnce installer via Dfsvc.exe trampoline. Adversaries may take advantage of
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ClickOnce to proxy execution of malicious payloads via trusted Microsoft processes.
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"""
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from = "now-119m"
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index = ["logs-endpoint.events.*"]
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interval = "60m"
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language = "eql"
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license = "Elastic License v2"
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name = "Execution via Microsoft DotNet ClickOnce Host"
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risk_score = 21
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rule_id = "5297b7f1-bccd-4611-93fa-ea342a01ff84"
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severity = "low"
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tags = [
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"Domain: Endpoint",
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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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"Rule Type: BBR",
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"Data Source: Elastic Defend",
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]
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type = "eql"
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query = '''
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sequence by user.id with maxspan=5s
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[process where host.os.type == "windows" and event.action == "start" and
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process.name : "rundll32.exe" and process.command_line : ("*dfshim*ShOpenVerbApplication*", "*dfshim*#*")]
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[network where host.os.type == "windows" and process.name : "dfsvc.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 = "T1127"
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name = "Trusted Developer Utilities Proxy Execution"
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reference = "https://attack.mitre.org/techniques/T1127/"
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[[rule.threat.technique.subtechnique]]
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id = "T1127.002"
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name = "ClickOnce"
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reference = "https://attack.mitre.org/techniques/T1127/002/"
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[[rule.threat.technique]]
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id = "T1218"
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name = "System Binary Proxy Execution"
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reference = "https://attack.mitre.org/techniques/T1218/"
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[[rule.threat.technique.subtechnique]]
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id = "T1218.011"
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name = "Rundll32"
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reference = "https://attack.mitre.org/techniques/T1218/011/"
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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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