Ruben Groenewoud
c2822e175c
* Update defense_evasion_execution_msbuild_started_by_script.toml * Mostly updated Execution tags, also new_terms conv * removed index * Removed index * WMIPrvSE tuning * Additional tuning * Tuning & changes * Additional tuning * Applied unit test optimization * Addressed feedback * Update rules/windows/execution_command_shell_started_by_svchost.toml Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com> * caseless unit testing fix * fixed caseless executable unit test * unit testing fix * Update rules/windows/execution_suspicious_powershell_imgload.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update execution_ms_office_written_file.toml * Update rules/windows/defense_evasion_execution_msbuild_started_by_script.toml * Update rules/windows/defense_evasion_execution_msbuild_started_unusal_process.toml * Added user ids to new terms * Update rules/windows/execution_suspicious_powershell_imgload.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> * Update rules_building_block/execution_unsigned_service_executable.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> * Update execution_unsigned_service_executable.toml --------- Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com> Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
66 lines
1.8 KiB
TOML
66 lines
1.8 KiB
TOML
[metadata]
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creation_date = "2023/07/14"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "Multiple field support in the New Terms rule type was added in Elastic 8.6"
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min_stack_version = "8.6.0"
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updated_date = "2023/09/19"
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bypass_bbr_timing = true
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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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This rule identifies the execution of unsigned executables via service control manager (SCM). Adversaries may abuse SCM
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to execute malware or escalate privileges.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "kuery"
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license = "Elastic License v2"
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name = "Execution of an Unsigned Service"
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risk_score = 21
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rule_id = "56fdfcf1-ca7c-4fd9-951d-e215ee26e404"
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severity = "low"
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tags = ["Domain: Endpoint",
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"OS: Windows",
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"Use Case: Threat Detection",
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"Tactic: Execution",
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"Rule Type: BBR",
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"Data Source: Elastic Defend"
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]
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timestamp_override = "event.ingested"
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type = "new_terms"
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query = '''
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host.os.type:windows and event.category:process and event.type:start and
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process.parent.executable:"C:\\Windows\\System32\\services.exe" and
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(process.code_signature.exists:false or process.code_signature.trusted:false)
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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 = "T1569"
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name = "System Services"
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reference = "https://attack.mitre.org/techniques/T1569/"
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[[rule.threat.technique.subtechnique]]
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id = "T1569.002"
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name = "Service Execution"
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reference = "https://attack.mitre.org/techniques/T1569/002/"
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[rule.threat.tactic]
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id = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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[rule.new_terms]
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field = "new_terms_fields"
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value = ["host.id", "process.executable", "user.id"]
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[[rule.new_terms.history_window_start]]
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field = "history_window_start"
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value = "now-14d"
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