Colson Wilhoit
98d93bc21e
* [New Rule] Hidden Shared Object File * [Rule Tuning] Hidden File from Tmp * Update updated_date * Update rules/linux/defense_evasion_hidden_shared_object.toml * Update rules/linux/defense_evasion_hidden_shared_object.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules/linux/defense_evasion_hidden_shared_object.toml * Update rules/linux/defense_evasion_hidden_shared_object.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
53 lines
1.7 KiB
TOML
53 lines
1.7 KiB
TOML
[metadata]
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creation_date = "2022/07/20"
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maturity = "production"
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updated_date = "2022/07/20"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the creation of a hidden shared object (.so) file. Users can mark specific files as hidden simply by putting a "." as the first character in the file or folder name.
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Adversaries can use this to their advantage to hide files and folders on the system for persistence and defense evasion.
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"""
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from = "now-9m"
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index = ["auditbeat-*", "logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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max_signals = 33
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name = "Creation of Hidden Shared Object File"
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note = """## Setup
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If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
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"""
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risk_score = 47
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rule_id = "766d3f91-3f12-448c-b65f-20123e9e9e8c"
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severity = "medium"
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tags = ["Elastic", "Host", "Linux", "Threat Detection", "Defense Evasion"]
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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 event.action : "creation" and file.extension == "so" and file.name : ".*.so"
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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 = "T1564"
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name = "Hide Artifacts"
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reference = "https://attack.mitre.org/techniques/T1564/"
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[[rule.threat.technique.subtechnique]]
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id = "T1564.001"
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name = "Hidden Files and Directories"
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reference = "https://attack.mitre.org/techniques/T1564/001/"
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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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