Justin Ibarra
63 lines
2.2 KiB
TOML
63 lines
2.2 KiB
TOML
[metadata]
|
|
creation_date = "2021/03/15"
|
|
maturity = "production"
|
|
updated_date = "2021/05/10"
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Identifies suspicious startup shell folder modifications to change the default Startup directory in order to bypass
|
|
detections monitoring file creation in the Windows Startup folder.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Suspicious Startup Shell Folder Modification"
|
|
note = """## Triage and analysis
|
|
|
|
Verify file creation events in the new Windows Startup folder location."""
|
|
risk_score = 73
|
|
rule_id = "c8b150f0-0164-475b-a75e-74b47800a9ff"
|
|
severity = "high"
|
|
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence"]
|
|
timestamp_override = "event.ingested"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
registry where
|
|
registry.path : (
|
|
"HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\User Shell Folders\\Common Startup",
|
|
"HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders\\Common Startup",
|
|
"HKEY_USERS\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\User Shell Folders\\Startup",
|
|
"HKEY_USERS\\*\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders\\Startup"
|
|
) and
|
|
registry.data.strings != null and
|
|
/* Normal Startup Folder Paths */
|
|
not registry.data.strings : (
|
|
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup",
|
|
"%ProgramData%\\Microsoft\\Windows\\Start Menu\\Programs\\Startup",
|
|
"%USERPROFILE%\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup",
|
|
"C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup"
|
|
)
|
|
'''
|
|
|
|
|
|
[[rule.threat]]
|
|
framework = "MITRE ATT&CK"
|
|
[[rule.threat.technique]]
|
|
id = "T1547"
|
|
name = "Boot or Logon Autostart Execution"
|
|
reference = "https://attack.mitre.org/techniques/T1547/"
|
|
[[rule.threat.technique.subtechnique]]
|
|
id = "T1547.001"
|
|
name = "Registry Run Keys / Startup Folder"
|
|
reference = "https://attack.mitre.org/techniques/T1547/001/"
|
|
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0003"
|
|
name = "Persistence"
|
|
reference = "https://attack.mitre.org/tactics/TA0003/"
|