Jonhnathan
3614f42b00
* [New Rule] New BBR Rules - Part 5 * Apply suggestions from code review Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> * Tag work --------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
64 lines
2.1 KiB
TOML
64 lines
2.1 KiB
TOML
[metadata]
|
|
creation_date = "2023/08/29"
|
|
integration = ["endpoint"]
|
|
maturity = "production"
|
|
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
|
|
min_stack_version = "8.3.0"
|
|
updated_date = "2023/08/29"
|
|
bypass_bbr_timing = true
|
|
|
|
[rule]
|
|
author = ["Elastic"]
|
|
description = """
|
|
Identifies shortcut files written to or modified in the startup folder. Adversaries may use this technique to maintain
|
|
persistence.
|
|
"""
|
|
from = "now-9m"
|
|
index = ["logs-endpoint.events.*", "endgame-*"]
|
|
language = "eql"
|
|
license = "Elastic License v2"
|
|
name = "Shortcut File Written or Modified on Startup Folder"
|
|
risk_score = 21
|
|
rule_id = "ee53d67a-5f0c-423c-a53c-8084ae562b5c"
|
|
severity = "low"
|
|
tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Persistence", "Data Source: Elastic Endgame", "Data Source: Elastic Defend", "Rule Type: BBR"]
|
|
timestamp_override = "event.ingested"
|
|
building_block_type = "default"
|
|
type = "eql"
|
|
|
|
query = '''
|
|
file where host.os.type == "windows" and event.type != "deletion" and file.extension == "lnk" and
|
|
file.path : (
|
|
"C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*",
|
|
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\StartUp\\*"
|
|
) and
|
|
not (
|
|
(process.name : "ONENOTE.EXE" and process.code_signature.status: "trusted" and file.name : "Send to OneNote.lnk") or
|
|
(process.name: "OktaVerifySetup.exe" and process.code_signature.status: "trusted" and file.name : "Okta Verify.lnk")
|
|
)
|
|
'''
|
|
|
|
|
|
[[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.technique.subtechnique]]
|
|
id = "T1547.009"
|
|
name = "Shortcut Modification"
|
|
reference = "https://attack.mitre.org/techniques/T1547/009/"
|
|
|
|
|
|
|
|
[rule.threat.tactic]
|
|
id = "TA0003"
|
|
name = "Persistence"
|
|
reference = "https://attack.mitre.org/tactics/TA0003/"
|