Ruben Groenewoud
1aea1ee9bb
* [New Rule] Init.d File and Service Creation * Changed rule name * [New Rule] Sus File Creation init.d Persistence * Added Endgame compatibility * added touch * Added OSQuery to investigation guide * added additional processes * removed investigation guide to add in sep PR * changed rule name * removed investigation guide tag * Update rules/linux/persistence_init_d_file_creation.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules/linux/persistence_init_d_file_creation.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules/linux/persistence_init_d_file_creation.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules/linux/persistence_init_d_file_creation.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update rules/linux/persistence_init_d_file_creation.toml Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com> * Update persistence_init_d_file_creation.toml --------- Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
64 lines
2.3 KiB
TOML
64 lines
2.3 KiB
TOML
[metadata]
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creation_date = "2023/03/21"
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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, New Term"
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min_stack_version = "8.6.0"
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updated_date = "2023/04/03"
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[rule]
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author = ["Elastic"]
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description = """
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Files that are placed in the /etc/init.d/ directory in Unix can be used to start custom applications,
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services, scripts or commands during start-up. Init.d has been mostly replaced in favor of Systemd, however,
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through the "systemd-sysv-generator" init.d files can be converted to service unit files that run at boot.
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Adversaries may add or alter files located in the /etc/init.d/ directory to execute malicious code on boot
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time in order to gain persistence onto the system.
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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 = "kuery"
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license = "Elastic License v2"
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name = "Potential Persistence Through init.d Detected"
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references = [
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"https://www.intezer.com/blog/malware-analysis/hiddenwasp-malware-targeting-linux-systems/",
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"https://pberba.github.io/security/2022/02/06/linux-threat-hunting-for-persistence-initialization-scripts-and-shell-configuration/#8-boot-or-logon-initialization-scripts-rc-scripts",
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"https://www.cyberciti.biz/faq/how-to-enable-rc-local-shell-script-on-systemd-while-booting-linux-system/"
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]
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risk_score = 47
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rule_id = "474fd20e-14cc-49c5-8160-d9ab4ba16c8b"
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severity = "medium"
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tags = ["Elastic", "Host", "Linux", "Threat Detection", "Persistence", "Elastic Endgame"]
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timestamp_override = "event.ingested"
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type = "new_terms"
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query = '''
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host.os.type :"linux" and event.action:("creation" or "file_create_event" or "rename" or "file_rename_event") and
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file.path : /etc/init.d/* and not process.executable : ("/usr/bin/dpkg" or "/usr/bin/dockerd" or "/bin/rpm") and not
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file.extension : "swp"
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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 = "T1037"
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name = "Boot or Logon Initialization Scripts"
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reference = "https://attack.mitre.org/techniques/T1037/"
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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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[rule.new_terms]
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field = "new_terms_fields"
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value = ["file.path", "process.name"]
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[[rule.new_terms.history_window_start]]
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field = "history_window_start"
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value = "now-7d"
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