Jonhnathan
cc889e3bf2
* [Rule Tuning] Linux 3rd Party EDR Support - Crowdstrike and S1 - 4 * Apply suggestions from code review Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> --------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
62 lines
2.0 KiB
TOML
62 lines
2.0 KiB
TOML
[metadata]
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creation_date = "2024/08/23"
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integration = ["endpoint", "auditd_manager", "crowdstrike", "sentinel_one_cloud_funnel"]
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maturity = "production"
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min_stack_version = "8.13.0"
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min_stack_comments = "Breaking change at 8.13.0 for SentinelOne Integration."
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updated_date = "2025/01/07"
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[rule]
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author = ["Elastic"]
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description = """
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This rule detects Linux Access Control List (ACL) modification via the setfacl command.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*", "endgame-*", "auditbeat-*", "logs-auditd_manager.auditd-*", "logs-crowdstrike.fdr*", "logs-sentinel_one_cloud_funnel.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Access Control List Modification via setfacl"
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references = ["https://www.uptycs.com/blog/threat-research-report-team/evasive-techniques-used-by-malicious-linux-shell-scripts"]
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risk_score = 21
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rule_id = "999565a2-fc52-4d72-91e4-ba6712c0377e"
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severity = "low"
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tags = [
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"Domain: Endpoint",
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"OS: Linux",
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"Use Case: Threat Detection",
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"Tactic: Defense Evasion",
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"Data Source: Elastic Defend",
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"Data Source: Elastic Endgame",
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"Data Source: Auditd Manager",
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"Data Source: Crowdstrike",
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"Data Source: SentinelOne",
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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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process where host.os.type == "linux" and event.type == "start" and
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event.action in ("exec", "exec_event", "start", "ProcessRollup2", "executed", "process_started") and
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process.name == "setfacl" and not (
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process.command_line == "/bin/setfacl --restore=-" or
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process.args == "/var/log/journal/"
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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 = "T1222"
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name = "File and Directory Permissions Modification"
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reference = "https://attack.mitre.org/techniques/T1222/"
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[[rule.threat.technique.subtechnique]]
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id = "T1222.002"
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name = "Linux and Mac File and Directory Permissions Modification"
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reference = "https://attack.mitre.org/techniques/T1222/002/"
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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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