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>
77 lines
2.6 KiB
TOML
77 lines
2.6 KiB
TOML
[metadata]
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creation_date = "2021/01/19"
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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 = "2023/06/22"
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[rule]
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author = ["Elastic"]
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description = """
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Both ~/.bash_profile and ~/.bashrc are files containing shell commands that are run when Bash is invoked. These files
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are executed in a user's context, either interactively or non-interactively, when a user logs in so that their
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environment is set correctly. Adversaries may abuse this to establish persistence by executing malicious content
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triggered by a user’s shell.
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"""
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false_positives = ["Changes to the Shell Profile tend to be noisy, a tuning per your environment will be required."]
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from = "now-9m"
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index = ["logs-endpoint.events.*", "auditbeat-*"]
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language = "kuery"
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license = "Elastic License v2"
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name = "Bash Shell Profile Modification"
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references = ["https://www.anomali.com/blog/pulling-linux-rabbit-rabbot-malware-out-of-a-hat"]
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risk_score = 47
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rule_id = "e6c1a552-7776-44ad-ae0f-8746cc07773c"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: macOS", "OS: Linux", "Use Case: Threat Detection", "Tactic: Persistence"]
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timestamp_override = "event.ingested"
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type = "query"
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query = '''
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event.category:file and event.type:change and
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process.name:(* and not (sudo or
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vim or
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zsh or
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env or
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nano or
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bash or
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Terminal or
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xpcproxy or
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login or
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cat or
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cp or
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launchctl or
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java)) and
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not process.executable:(/Applications/* or /private/var/folders/* or /usr/local/*) and
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file.path:(/private/etc/rc.local or
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/etc/rc.local or
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/home/*/.profile or
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/home/*/.profile1 or
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/home/*/.bash_profile or
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/home/*/.bash_profile1 or
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/home/*/.bashrc or
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/Users/*/.bash_profile or
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/Users/*/.zshenv)
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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 = "T1546"
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name = "Event Triggered Execution"
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reference = "https://attack.mitre.org/techniques/T1546/"
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[[rule.threat.technique.subtechnique]]
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id = "T1546.004"
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name = "Unix Shell Configuration Modification"
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reference = "https://attack.mitre.org/techniques/T1546/004/"
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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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