Jonhnathan
109e8a85a5
* [Rule Tuning] BBR Rule Tuning 1 - Tighten Indexes Edition * Apply suggestions from code review Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update defense_evasion_msdt_suspicious_diagcab.toml * Update defense_evasion_suspicious_msiexec_execution.toml * Update discovery_security_software_wmic.toml * Update rules_building_block/discovery_security_software_wmic.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Endgame tag --------- Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
64 lines
2.1 KiB
TOML
64 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2023/07/13"
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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 = "2024/04/05"
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[rule]
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author = ["Elastic"]
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description = """
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This rule identifies the execution of commands that can be used to delete files and directories. Adversaries may delete
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files and directories on a host system, such as logs, browser history, or malware.
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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.process-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "File or Directory Deletion Command"
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risk_score = 21
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rule_id = "5919988c-29e1-4908-83aa-1f087a838f63"
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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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process where host.os.type == "windows" and event.type == "start" and
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(
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(process.name: "rundll32.exe" and process.args: "*InetCpl.cpl,Clear*") or
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(process.name: "reg.exe" and process.args:"delete") or
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(
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process.name: "cmd.exe" and process.args: ("*rmdir*", "*rm *", "rm") and
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not process.args : (
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"*\\AppData\\Local\\Microsoft\\OneDrive\\*",
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"*\\AppData\\Local\\Temp\\DockerDesktop\\*",
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"*\\AppData\\Local\\Temp\\Report.*",
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"*\\AppData\\Local\\Temp\\*.PackageExtraction"
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)
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) or
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(process.name: "powershell.exe" and process.args: ("*rmdir", "rm", "rd", "*Remove-Item*", "del", "*]::Delete(*"))
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) and not user.id : "S-1-5-18"
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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 = "T1070"
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name = "Indicator Removal"
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reference = "https://attack.mitre.org/techniques/T1070/"
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[[rule.threat.technique.subtechnique]]
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id = "T1070.004"
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name = "File Deletion"
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reference = "https://attack.mitre.org/techniques/T1070/004/"
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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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