mirror of
https://github.com/valitydev/SigmaHQ.git
synced 2024-11-07 17:58:52 +00:00
45 lines
1.3 KiB
YAML
45 lines
1.3 KiB
YAML
action: global
|
|
title: NetNTLM Downgrade Attack
|
|
id: d67572a0-e2ec-45d6-b8db-c100d14b8ef2
|
|
description: Detects NetNTLM downgrade attack
|
|
references:
|
|
- https://www.optiv.com/blog/post-exploitation-using-netntlm-downgrade-attacks
|
|
author: Florian Roth
|
|
date: 2018/03/20
|
|
modified: 2020/08/23
|
|
tags:
|
|
- attack.defense_evasion
|
|
- attack.t1089 # an old one
|
|
- attack.t1562.001
|
|
- attack.t1112
|
|
detection:
|
|
condition: 1 of them
|
|
falsepositives:
|
|
- Unknown
|
|
level: critical
|
|
---
|
|
logsource:
|
|
product: windows
|
|
service: sysmon
|
|
detection:
|
|
selection1:
|
|
EventID: 13
|
|
TargetObject:
|
|
- '*SYSTEM\\*ControlSet*\Control\Lsa\lmcompatibilitylevel'
|
|
- '*SYSTEM\\*ControlSet*\Control\Lsa*\NtlmMinClientSec'
|
|
- '*SYSTEM\\*ControlSet*\Control\Lsa*\RestrictSendingNTLMTraffic'
|
|
---
|
|
# Windows Security Eventlog: Process Creation with Full Command Line
|
|
logsource:
|
|
product: windows
|
|
service: security
|
|
definition: 'Requirements: Audit Policy : Object Access > Audit Registry (Success)'
|
|
detection:
|
|
selection2:
|
|
EventID: 4657
|
|
ObjectName: '\REGISTRY\MACHINE\SYSTEM\\*ControlSet*\Control\Lsa*'
|
|
ObjectValueName:
|
|
- 'LmCompatibilityLevel'
|
|
- 'NtlmMinClientSec'
|
|
- 'RestrictSendingNTLMTraffic'
|