[metadata]
creation_date = "2020/11/29"
maturity = "production"
updated_date = "2021/10/13"

[rule]
author = ["Elastic"]
description = """
Identifies built-in Windows script interpreters (cscript.exe or wscript.exe) being used to download an executable file
from a remote destination.
"""
from = "now-9m"
index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
language = "eql"
license = "Elastic License v2"
name = "Remote File Download via Script Interpreter"
risk_score = 47
rule_id = "1d276579-3380-4095-ad38-e596a01bc64f"
severity = "medium"
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Command and Control"]
type = "eql"

query = '''
sequence by host.id, process.entity_id
  [network where process.name : ("wscript.exe", "cscript.exe") and network.protocol != "dns" and
   network.direction : ("outgoing", "egress") and network.type == "ipv4" and destination.ip != "127.0.0.1"
  ]
  [file where event.type == "creation" and file.extension : ("exe", "dll")]
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1105"
name = "Ingress Tool Transfer"
reference = "https://attack.mitre.org/techniques/T1105/"


[rule.threat.tactic]
id = "TA0011"
name = "Command and Control"
reference = "https://attack.mitre.org/tactics/TA0011/"