mirror of
https://github.com/valitydev/SigmaHQ.git
synced 2024-11-07 17:58:52 +00:00
34 lines
939 B
YAML
34 lines
939 B
YAML
title: Failed Logins with Different Accounts from Single Source System
|
|
id: e98374a6-e2d9-4076-9b5c-11bdb2569995
|
|
description: Detects suspicious failed logins with different user accounts from a single source system
|
|
author: Florian Roth
|
|
date: 2017/01/10
|
|
tags:
|
|
- attack.persistence
|
|
- attack.privilege_escalation
|
|
- attack.t1078
|
|
logsource:
|
|
product: windows
|
|
service: security
|
|
detection:
|
|
selection1:
|
|
EventID:
|
|
- 529
|
|
- 4625
|
|
UserName: '*'
|
|
WorkstationName: '*'
|
|
selection2:
|
|
EventID: 4776
|
|
UserName: '*'
|
|
Workstation: '*'
|
|
timeframe: 24h
|
|
condition:
|
|
- selection1 | count(UserName) by WorkstationName > 3
|
|
- selection2 | count(UserName) by Workstation > 3
|
|
falsepositives:
|
|
- Terminal servers
|
|
- Jump servers
|
|
- Other multiuser systems like Citrix server farms
|
|
- Workstations with frequently changing users
|
|
level: medium
|