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>
64 lines
2.1 KiB
TOML
64 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2023/04/26"
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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 = "2023/04/26"
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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 mimipenguin exploit script which is linux adaptation of Windows tool mimikatz.
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Mimipenguin exploit script is used to dump clear text passwords from a currently logged-in user. The tool exploits
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a known vulnerability CVE-2018-20781. Malicious actors can exploit the cleartext credentials in memory by
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dumping the process and extracting lines that have a high probability of containing cleartext passwords.
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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 Linux Credential Dumping via Proc Filesystem"
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references = [
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"https://github.com/huntergregal/mimipenguin",
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"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20781"
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]
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risk_score = 47
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rule_id = "ef100a2e-ecd4-4f72-9d1e-2f779ff3c311"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Credential Access", "Use Case: Vulnerability"]
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type = "eql"
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query = '''
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sequence by process.parent.name,host.name with maxspan=1m
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[process where host.os.type == "linux" and process.name == "ps" and event.action == "exec"
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and process.args in ("-eo", "pid", "command") ]
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[process where host.os.type == "linux" and process.name == "strings" and event.action == "exec"
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and process.args : "/tmp/*" ]
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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 = "T1003"
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name = "OS Credential Dumping"
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reference = "https://attack.mitre.org/techniques/T1003/"
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[[rule.threat.technique.subtechnique]]
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id = "T1003.007"
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name = "Proc Filesystem"
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reference = "https://attack.mitre.org/techniques/T1003/007/"
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[[rule.threat.technique]]
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id = "T1212"
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name = "Exploitation for Credential Access"
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reference = "https://attack.mitre.org/techniques/T1212/"
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[rule.threat.tactic]
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id = "TA0006"
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name = "Credential Access"
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reference = "https://attack.mitre.org/tactics/TA0006/"
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