Ruben Groenewoud
a7ff449fbc
* [Rule Tuning] Doing some quick tunings * updated_date bump * Update rules/linux/discovery_linux_modprobe_enumeration.toml * Update rules/linux/discovery_linux_modprobe_enumeration.toml * Update rules/linux/discovery_linux_sysctl_enumeration.toml * Update rules/linux/persistence_init_d_file_creation.toml * Update rules/linux/persistence_rc_script_creation.toml * Update rules/linux/persistence_shared_object_creation.toml * deprecate rule * deprecate rule * Update execution_abnormal_process_id_file_created.toml * Update discovery_kernel_module_enumeration_via_proc.toml * Update discovery_linux_modprobe_enumeration.toml * Update execution_remote_code_execution_via_postgresql.toml * Update discovery_potential_syn_port_scan_detected.toml * Added 2 tunings, sorry I missed those.. * One more tune * Update discovery_suspicious_proc_enumeration.toml
83 lines
2.8 KiB
TOML
83 lines
2.8 KiB
TOML
[metadata]
|
|
creation_date = "2023/06/09"
|
|
integration = ["endpoint"]
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup, New Term"
|
|
min_stack_version = "8.6.0"
|
|
updated_date = "2023/07/31"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Systemd service files are configuration files in Linux systems used to define and manage system services. Malicious
|
|
actors can leverage systemd service files to achieve persistence by creating or modifying service files to execute
|
|
malicious commands or payloads during system startup. This allows them to maintain unauthorized access, execute
|
|
additional malicious activities, or evade detection.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["logs-endpoint.events.*", "endgame-*"]
|
|
language = "kuery"
|
|
license = "Elastic License v2"
|
|
name = "New Systemd Service Created by Previously Unknown Process"
|
|
references = [
|
|
"https://opensource.com/article/20/7/systemd-timers",
|
|
"https://pberba.github.io/security/2022/01/30/linux-threat-hunting-for-persistence-systemd-timers-cron/"
|
|
]
|
|
risk_score = 47
|
|
rule_id = "17b0a495-4d9f-414c-8ad0-92f018b8e001"
|
|
severity = "medium"
|
|
tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Persistence", "Tactic: Privilege Escalation", "Data Source: Elastic Endgame"]
|
|
timestamp_override = "event.ingested"
|
|
type = "new_terms"
|
|
|
|
query = '''
|
|
host.os.type : "linux" and event.action : ("creation" or "file_create_event") and
|
|
file.path : (/etc/systemd/system/* or /usr/local/lib/systemd/system/* or /lib/systemd/system/* or
|
|
/usr/lib/systemd/system/* or /home/*/.config/systemd/user/*) and not
|
|
(process.name : ("dpkg" or "dockerd" or "rpm" or "snapd" or "yum" or "exe" or "dnf" or "dnf-automatic" or python* or
|
|
"elastic-agent" or "cinc-client") or file.extension : ("swp" or "swx"))
|
|
'''
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1543"
|
|
name = "Create or Modify System Process"
|
|
reference = "https://attack.mitre.org/techniques/T1543/"
|
|
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1543.002"
|
|
name = "Systemd Service"
|
|
reference = "https://attack.mitre.org/techniques/T1543/002/"
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0003"
|
|
name = "Persistence"
|
|
reference = "https://attack.mitre.org/tactics/TA0003/"
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
|
|
[[rule.threat.technique]]
|
|
id = "T1543"
|
|
name = "Create or Modify System Process"
|
|
reference = "https://attack.mitre.org/techniques/T1543/"
|
|
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1543.002"
|
|
name = "Systemd Service"
|
|
reference = "https://attack.mitre.org/techniques/T1543/002/"
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0004"
|
|
name = "Privilege Escalation"
|
|
reference = "https://attack.mitre.org/tactics/TA0004/"
|
|
|
|
[rule.new_terms]
|
|
field = "new_terms_fields"
|
|
value = ["file.path", "process.name"]
|
|
|
|
[[rule.new_terms.history_window_start]]
|
|
field = "history_window_start"
|
|
value = "now-7d"
|