[metadata]
creation_date = "2020/03/19"
ecs_version = ["1.5.0"]
maturity = "production"
updated_date = "2020/03/19"

[rule]
author = ["Elastic"]
description = """
Identifies certutil.exe making a network connection. Adversaries could abuse certutil.exe to download a certificate, or
malware, from a remote URL.
"""
index = ["winlogbeat-*"]
language = "kuery"
license = "Elastic License"
name = "Network Connection via Certutil"
risk_score = 21
rule_id = "3838e0e3-1850-4850-a411-2e8c5ba40ba8"
severity = "low"
tags = ["Elastic", "Windows"]
type = "query"

query = '''
process.name:certutil.exe and event.action:"Network connection detected (rule: NetworkConnect)" and not destination.ip:(10.0.0.0/8 or 172.16.0.0/12 or 192.168.0.0/16)
'''


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


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