1200KM / sigma-rule
Guacamole Two Users Sharing Session Anomaly — Sigma Rule
Sigma rule 1edd77db-0669-4fef-9598-165bda82826d. Guacamole Two Users Sharing Session Anomaly — Sigma Rule. Detects suspicious session with two users present
Rule metadata and linked tags
Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2020-07-03 / 2021-11-27.
{
"product": "linux",
"service": "guacamole"
}Pinned original Sigma rule · Detection Rule License 1.1
Source SHA-256: 431d8771197cd96e4ebb367eb812d235d74e677f7c70a352a54d4596b28f89e9
Detection logic
Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.
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
False positives
- Unknown
Source references
Connected ecosystem references
Exact source-tagged techniques
Telemetry review
Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.
Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.