# publicmosaic.sigma.yml — generated 2026-10-30 19:07 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: asn 51043 — https://publicmosaic.com/asn/51043
# covers listed listeners only; archived listings omitted: 0
# A withdrawal can take up to five minutes to reach this file. Each address's page under publicmosaic.com/ip/ is authoritative.
title: 'AS51043 — connections to listed C2 hosts'
id: 79f9c272-d8eb-8004-9847-49d38043e016
status: experimental
description: 'Outbound connection to an address Public Mosaic listed as a C2 host when this file was generated.'
references:
  - 'https://publicmosaic.com/asn/51043'
author: 'Public Mosaic'
date: 2026-10-26
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p8069:
    DestinationIp:
      - 83.98.39.50
      - 83.98.39.52
      - 83.98.39.53
      - 83.98.39.54
    DestinationPort: 8069
  selection_p8443:
    DestinationIp:
      - 83.98.39.50
      - 83.98.39.51
      - 83.98.39.52
    DestinationPort: 8443
  condition: 1 of selection_*
falsepositives:
  - 'Shared hosting: an address can later serve other tenants. Its host page shows whether it is still listed.'
level: high