Hub configuration

Name: SSH Bad Key Exchange
Author: LePresidente

More info

SSH Bad Key Exchange Detection Scenario by LePresidente | CrowdSec Hub

« SSH Bad Key Exchange »
v0.3 by LePresidente / ssh-bad-keyexchange-bf
Attack scenariosshNot spoofableHigh confidence

Detect ssh bad key exchange

Installation

cscli scenarios install LePresidente/ssh-bad-keyexchange-bf

Description

Detect failed ssh Key Exchanges :

leakspeed of 10s, capacity of 5 on same target ip

YAML Configuration

1# ssh bruteforce
2type: leaky
3name: lepresidente/ssh-bad-keyexchange-bf
4description: "Detect ssh bad key exchange"
5filter: "evt.Meta.log_type == 'ssh_bad_keyexchange'"
6leakspeed: "10s"
7references:
8  - http://wikipedia.com/ssh-bf-is-bad
9capacity: 5
10groupby: evt.Meta.source_ip
11blackhole: 1m
12reprocess: true
13labels:
14  service: ssh
15  behavior: "generic:scan"
16  confidence: 3
17  spoofable: 0
18  classification:
19    - attack.T1595
20  remediation: true
21  label: "SSH Bad Key Exchange"
22

Hub configuration

« SSH Bad Key Exchange »v0.3 by LePresidente / ssh-bad-keyexchange-bfAttack scenariosshNot spoofableHigh confidenceMITRE:T1595

« SSH Bad Key Exchange »
v0.3 by LePresidente / ssh-bad-keyexchange-bf
Attack scenariosshNot spoofableHigh confidence