[metadata]
creation_date = "2021/12/10"
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2022/11/07"

[rule]
author = ["Elastic"]
description = """
Identifies an outbound network connection by JAVA to LDAP, RMI or DNS standard ports followed by a suspicious JAVA child
processes. This may indicate an attempt to exploit a JAVA/NDI (Java Naming and Directory Interface) injection vulnerability.
"""
from = "now-9m"
index = ["auditbeat-*", "logs-endpoint.events.*"]
language = "eql"
license = "Elastic License v2"
name = "Potential JAVA/JNDI Exploitation Attempt"
references = [
"https://www.lunasec.io/docs/blog/log4j-zero-day/",
"https://github.com/christophetd/log4shell-vulnerable-app",
"https://www.blackhat.com/docs/us-16/materials/us-16-Munoz-A-Journey-From-JNDI-LDAP-Manipulation-To-RCE.pdf",
"https://www.elastic.co/security-labs/detecting-log4j2-with-elastic-security",
"https://www.elastic.co/security-labs/analysis-of-log4shell-cve-2021-45046"
]
risk_score = 73
rule_id = "c3f5e1d8-910e-43b4-8d44-d748e498ca86"
severity = "high"
tags = ["Elastic", "Host", "Linux", "macOS", "Threat Detection", "Execution"]
type = "eql"

query = '''
sequence by host.id with maxspan=1m
 [network where event.action == "connection_attempted" and
  process.name : "java" and
  /*
     outbound connection attempt to
     LDAP, RMI or DNS standard ports
     by JAVA process
   */
  destination.port in (1389, 389, 1099, 53, 5353)] by process.pid
 [process where event.type == "start" and

  /* Suspicious JAVA child process */
  process.parent.name : "java" and
   process.name : ("sh",
                   "bash",
                   "dash",
                   "ksh",
                   "tcsh",
                   "zsh",
                   "curl",
                   "perl*",
                   "python*",
                   "ruby*",
                   "php*",
                   "wget")] by process.parent.pid
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1059"
name = "Command and Scripting Interpreter"
reference = "https://attack.mitre.org/techniques/T1059/"
[[rule.threat.technique.subtechnique]]
id = "T1059.007"
name = "JavaScript"
reference = "https://attack.mitre.org/techniques/T1059/007/"

[[rule.threat.technique]]
id = "T1203"
name = "Exploitation for Client Execution"
reference = "https://attack.mitre.org/techniques/T1203/"

[rule.threat.tactic]
id = "TA0002"
name = "Execution"
reference = "https://attack.mitre.org/tactics/TA0002/"