SigmaHQ/rules/linux/lnx_susp_failed_logons_single_source.yml
Thomas Patzke 5c465129bd Fixed rules
* Replaced unspecified logsource attribute 'type' with 'category'
* Usage of service 'auth' for linux logs
2017-09-11 00:35:52 +02:00

19 lines
534 B
YAML

title: Multiple Failed Logins with Different Accounts from Single Source System
description: Detects suspicious failed logins with different user accounts from a single source system
logsource:
product: linux
service: auth
detection:
selection:
log: auth
pam_user: not null
pam_rhost: not null
timeframe: 24h
condition: selection | count(pam_user) by pam_rhost > 3
falsepositives:
- Terminal servers
- Jump servers
- Workstations with frequently changing users
level: medium