SigmaHQ/rules/network/net_susp_network_scan.yml
2017-09-12 23:54:04 +02:00

22 lines
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YAML

title: Network Scans
description: Detects many failed connection attempts to different ports or hosts
author: Thomas Patzke
logsource:
category: firewall
detection:
selection:
action: denied
timeframe: 24h
condition:
- selection | count(dst_port) by src_ip > 10
- selection | count(dst_ip) by src_ip > 10
fields:
- src_ip
- dst_ip
- dst_port
falsepositives:
- Inventarization systems
- Vulnerability scans
- Penetration testing activity
level: medium