Ruben Groenewoud
601254488b
* [BBR Promotion] Q2 Linux BBR Promotion * Update collection_linux_clipboard_activity.toml * Update defense_evasion_creation_of_hidden_files_directories.toml
50 lines
1.5 KiB
TOML
50 lines
1.5 KiB
TOML
[metadata]
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creation_date = "2024/02/05"
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integration = ["endpoint"]
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maturity = "production"
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updated_date = "2024/10/18"
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[rule]
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author = ["Elastic"]
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description = """
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Monitors for grep activity related to memory mapping. The /proc/*/maps file in Linux provides a memory map for a
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specific process, detailing the memory segments, permissions, and what files are mapped to these segments. Attackers may
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read a process's memory map to identify memory addresses for code injection or process hijacking.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*", "endgame-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Suspicious Memory grep Activity"
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references = ["https://github.com/arget13/DDexec"]
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risk_score = 21
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rule_id = "d74d6506-427a-4790-b170-0c2a6ddac799"
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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: Discovery",
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"Data Source: Elastic Defend",
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"Data Source: Elastic Endgame",
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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 event.action in ("exec", "exec_event") and
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process.name in ("grep", "egrep", "fgrep", "rgrep") and process.args in ("[stack]", "[vdso]", "[heap]")
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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 = "T1057"
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name = "Process Discovery"
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reference = "https://attack.mitre.org/techniques/T1057/"
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[rule.threat.tactic]
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id = "TA0007"
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name = "Discovery"
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reference = "https://attack.mitre.org/tactics/TA0007/"
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