Jonhnathan
b4c84e8a40
* Update Tags * Bump updated date separately to be easy to revert if needed * Update resource_development_ml_linux_anomalous_compiler_activity.toml * Apply changes from the discussion * Update persistence_init_d_file_creation.toml * Update defense_evasion_timestomp_sysmon.toml * Update defense_evasion_application_removed_from_blocklist_in_google_workspace.toml * Update missing Tactic tags * Update unit tests to match new tags * Add missing IG tags * Delete okta_threat_detected_by_okta_threatinsight.toml * Update command_and_control_google_drive_malicious_file_download.toml * Update persistence_rc_script_creation.toml * Mass bump * Update persistence_shell_activity_by_web_server.toml * . --------- Co-authored-by: Mika Ayenson <Mika.ayenson@elastic.co> Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
55 lines
2.1 KiB
TOML
55 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2023/03/07"
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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 = "2023/03/07"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the execution of the PRoot utility, an open-source tool for user-space implementation of
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chroot, mount --bind, and binfmt_misc. Adversaries can leverage an open-source tool PRoot
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to expand the scope of their operations to multiple Linux distributions and simplify their necessary efforts.
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In a normal threat scenario, the scope of an attack is limited by the varying configurations of each Linux distribution.
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With PRoot, it provides an attacker with a consistent operational environment across different Linux distributions,
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such as Ubuntu, Fedora, and Alpine. PRoot also provides emulation capabilities that allow for malware built on other
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architectures, such as ARM, to be run.The post-exploitation technique called bring your own filesystem (BYOF),
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can be used by the threat actors to execute malicious payload or elevate privileges or perform network scans or
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orchestrate another attack on the environment. Although PRoot was originally not developed with malicious intent
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it can be easily tuned to work for one.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Potential Defense Evasion via PRoot"
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references = [
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"https://proot-me.github.io/",
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]
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risk_score = 47
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rule_id = "5c9ec990-37fa-4d5c-abfc-8d432f3dedd0"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: 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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process where event.action == "exec" and process.parent.name =="proot" and host.os.type == "linux"
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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 = "T1211"
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name = "Exploitation for Defense Evasion"
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reference = "https://attack.mitre.org/techniques/T1211/"
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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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