[metadata]
creation_date = "2022/07/22"
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/02/22"
integration = ["endpoint"]

[rule]
author = ["Elastic"]
description = """
Detects the use of the chkconfig binary to manually add a service for management by chkconfig. Threat actors may utilize this technique to maintain persistence on a system. When a new service is added, chkconfig ensures that the service has either a start or a kill entry in every runlevel and when the system is rebooted the service file added will run providing long-term persistence.
"""
from = "now-9m"
index = ["logs-endpoint.events.*", "endgame-*"]
language = "eql"
license = "Elastic License v2"
name = "Chkconfig Service Add"
references = [
    "https://www.intezer.com/blog/research/lightning-framework-new-linux-threat/"
]
risk_score = 47
rule_id = "b910f25a-2d44-47f2-a873-aabdc0d355e6"
severity = "medium"
tags = ["Elastic", "Host", "Linux", "Threat Detection", "Persistence", "Lightning Framework", "Elastic Endgame"]
timestamp_override = "event.ingested"
type = "eql"

query = '''
process where host.os.type == "linux" and event.type == "start" and
( 
  (process.executable : "/usr/sbin/chkconfig" and process.args : "--add") or
  (process.args : "*chkconfig" and process.args : "--add")
)
'''

[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1037"
name = "Boot or Logon Initialization Scripts"
reference = "https://attack.mitre.org/techniques/T1037/"

[[rule.threat.technique.subtechnique]]
id = "T1037.004"
name = "RC Scripts"
reference = "https://attack.mitre.org/techniques/T1037/004/"

[rule.threat.tactic]
id = "TA0003"
name = "Persistence"
reference = "https://attack.mitre.org/tactics/TA0003/"