credential_access_win_private_key_access.toml

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

[rule]
author = ["Elastic"]
description = """
Attackers may try to access private keys, e.g. ssh, in order to gain further authenticated access to the environment.
"""
from = "now-119m"
interval = "60m"
index = ["logs-endpoint.events.*"]
language = "eql"
license = "Elastic License v2"
name = "Attempted Private Key Access"
risk_score = 21
rule_id = "c55badd3-3e61-4292-836f-56209dc8a601"
severity = "low"
tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Credential Access", "Data Source: Elastic Defend", "Rule Type: BBR"]
timestamp_override = "event.ingested"
type = "eql"
building_block_type = "default"

query = '''
process where host.os.type == "windows" and event.type == "start" and process.args : ("*.pem*", "*.id_rsa*") and
  not process.executable : (
    "?:\\ProgramData\\Logishrd\\LogiOptions\\Software\\*\\LogiLuUpdater.exe",
    "?:\\Program Files\\Logi\\LogiBolt\\LogiBoltUpdater.exe",
    "?:\\Windows\\system32\\icacls.exe",
    "?:\\Program Files\\Splunk\\bin\\openssl.exe",
    "?:\\Program Files\\Elastic\\Agent\\data\\*\\components\\osqueryd.exe",
    "?:\\Windows\\System32\\OpenSSH\\*"
  )
'''

[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1552"
name = "Unsecured Credentials"
reference = "https://attack.mitre.org/techniques/T1552/"
[[rule.threat.technique.subtechnique]]
id = "T1552.004"
name = "Private Keys"
reference = "https://attack.mitre.org/techniques/T1552/004/"



[rule.threat.tactic]
id = "TA0006"
name = "Credential Access"
reference = "https://attack.mitre.org/tactics/TA0006/"