[metadata]
creation_date = "2020/08/21"
integration = ["endpoint", "windows"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/12/14"

[rule]
author = ["Elastic"]
description = """
Identifies a suspicious managed code hosting process which could indicate code injection or other form of suspicious
code execution.
"""
from = "now-9m"
index = ["winlogbeat-*", "logs-endpoint.events.file-*", "logs-windows.*"]
language = "eql"
license = "Elastic License v2"
name = "Suspicious Managed Code Hosting Process"
references = ["http://web.archive.org/web/20230329154538/https://blog.menasec.net/2019/07/interesting-difr-traces-of-net-clr.html"]
risk_score = 73
rule_id = "acf738b5-b5b2-4acc-bad9-1e18ee234f40"
severity = "high"
tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Defend"]
timestamp_override = "event.ingested"
type = "eql"

query = '''
file where host.os.type == "windows" and event.type != "deletion" and
  file.name : ("wscript.exe.log",
               "cscript.exe.log",
               "mshta.exe.log",
               "wmic.exe.log",
               "svchost.exe.log",
               "dllhost.exe.log",
               "cmstp.exe.log",
               "regsvr32.exe.log")
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1055"
name = "Process Injection"
reference = "https://attack.mitre.org/techniques/T1055/"


[rule.threat.tactic]
id = "TA0005"
name = "Defense Evasion"
reference = "https://attack.mitre.org/tactics/TA0005/"