Detection rules › Sigma

Guacamole Two Users Sharing Session Anomaly

Status
test
Severity
high
Log source
product linux, service guacamole
Author
Florian Roth (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects suspicious session with two users present

MITRE ATT&CK coverage

TacticTechniques
Credential AccessT1212 Exploitation for Credential Access

Rule body yaml

title: Guacamole Two Users Sharing Session Anomaly
id: 1edd77db-0669-4fef-9598-165bda82826d
status: test
description: Detects suspicious session with two users present
references:
    - https://research.checkpoint.com/2020/apache-guacamole-rce/
author: Florian Roth (Nextron Systems)
date: 2020-07-03
modified: 2021-11-27
tags:
    - attack.credential-access
    - attack.t1212
logsource:
    product: linux
    service: guacamole
detection:
    selection:
        - '(2 users now present)'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    - '(2 users now present)'