Jonhnathan
0fc83fe815
* [Rule Tuning] Linux 3rd Party EDR Support - Crowdstrike and S1 - 3 * . * Update rules/linux/command_and_control_ip_forwarding_activity.toml Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> --------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
91 lines
2.7 KiB
TOML
91 lines
2.7 KiB
TOML
[metadata]
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creation_date = "2024/05/31"
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integration = ["endpoint", "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 = "2025/01/06"
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[rule]
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author = ["Elastic"]
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description = """
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This rule identifies the creation of SSH keys using the ssh-keygen tool, which is the standard utility for generating
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SSH keys. Users often create SSH keys for authentication with remote services. However, threat actors can exploit this
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tool to move laterally across a network or maintain persistence by generating unauthorized SSH keys, granting them SSH
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access to systems.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.file*", "endgame-*", "logs-sentinel_one_cloud_funnel.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "SSH Key Generated via ssh-keygen"
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references = ["https://www.elastic.co/security-labs/primer-on-persistence-mechanisms"]
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risk_score = 21
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rule_id = "7df3cb8b-5c0c-4228-b772-bb6cd619053c"
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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: Lateral Movement",
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"Tactic: Persistence",
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"Data Source: Elastic Endgame",
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"Data Source: Elastic Defend",
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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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file where host.os.type == "linux" and event.action in ("creation", "file_create_event") and
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process.executable == "/usr/bin/ssh-keygen" and file.path : ("/home/*/.ssh/*", "/root/.ssh/*", "/etc/ssh/*") and
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not file.name : "known_hosts.*"
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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 = "T1098"
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name = "Account Manipulation"
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reference = "https://attack.mitre.org/techniques/T1098/"
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[[rule.threat.technique.subtechnique]]
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id = "T1098.004"
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name = "SSH Authorized Keys"
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reference = "https://attack.mitre.org/techniques/T1098/004/"
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[rule.threat.tactic]
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id = "TA0003"
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name = "Persistence"
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reference = "https://attack.mitre.org/tactics/TA0003/"
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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 = "T1021"
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name = "Remote Services"
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reference = "https://attack.mitre.org/techniques/T1021/"
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[[rule.threat.technique.subtechnique]]
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id = "T1021.004"
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name = "SSH"
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reference = "https://attack.mitre.org/techniques/T1021/004/"
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[[rule.threat.technique]]
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id = "T1563"
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name = "Remote Service Session Hijacking"
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reference = "https://attack.mitre.org/techniques/T1563/"
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[[rule.threat.technique.subtechnique]]
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id = "T1563.001"
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name = "SSH Hijacking"
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reference = "https://attack.mitre.org/techniques/T1563/001/"
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[rule.threat.tactic]
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id = "TA0008"
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name = "Lateral Movement"
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reference = "https://attack.mitre.org/tactics/TA0008/"
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