mirror of
https://github.com/valitydev/SigmaHQ.git
synced 2024-11-07 09:48:58 +00:00
42 lines
1.2 KiB
YAML
42 lines
1.2 KiB
YAML
---
|
|
action: global
|
|
title: NetNTLM Downgrade Attack
|
|
description: Detects post exploitation using NetNTLM downgrade attacks
|
|
reference:
|
|
- https://www.optiv.com/blog/post-exploitation-using-netntlm-downgrade-attacks
|
|
author: Florian Roth
|
|
date: 2018/03/20
|
|
tags:
|
|
- attack.credential_access
|
|
- attack.t1212
|
|
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'
|