sigma-rules/rules/windows/privilege_escalation_create_process_as_different_user.toml

[metadata]
creation_date = "2022/08/30"
integration = ["system", "windows"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/04/27"

[rule]
author = ["Elastic"]
description = """
Identifies process creation with alternate credentials. Adversaries may create a new process with a different token to
escalate privileges and bypass access controls.
"""
from = "now-9m"
index = ["winlogbeat-*", "logs-system.*", "logs-windows.*"]
language = "eql"
license = "Elastic License v2"
name = "Process Creation via Secondary Logon"
note = """## Setup

Audit events 4624 and 4688 are needed to trigger this rule.

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.

"""
references = ["https://attack.mitre.org/techniques/T1134/002/"]
risk_score = 47
rule_id = "42eeee3d-947f-46d3-a14d-7036b962c266"
severity = "medium"
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Privilege Escalation"]
type = "eql"

query = '''
sequence by winlog.computer_name with maxspan=1m

[authentication where event.action:"logged-in" and
 event.outcome == "success" and user.id : ("S-1-5-21-*", "S-1-12-1-*") and

 /* seclogon service */
 process.name == "svchost.exe" and
 winlog.event_data.LogonProcessName : "seclogo*" and source.ip == "::1" ] by winlog.event_data.TargetLogonId

[process where event.type == "start"] by winlog.event_data.TargetLogonId
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1134"
name = "Access Token Manipulation"
reference = "https://attack.mitre.org/techniques/T1134/"
[[rule.threat.technique.subtechnique]]
id = "T1134.002"
name = "Create Process with Token"
reference = "https://attack.mitre.org/techniques/T1134/002/"

[[rule.threat.technique.subtechnique]]
id = "T1134.003"
name = "Make and Impersonate Token"
reference = "https://attack.mitre.org/techniques/T1134/003/"



[rule.threat.tactic]
id = "TA0004"
name = "Privilege Escalation"
reference = "https://attack.mitre.org/tactics/TA0004/"