# publicmosaic.sigma.yml — generated 2026-11-01 12:07 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: asn 218239 — https://publicmosaic.com/asn/218239
# 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: 'AS218239 — connections to listed C2 hosts'
id: b2347170-cc54-866e-a408-2fd619d17d4c
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/218239'
author: 'Public Mosaic'
date: 2026-10-26
modified: 2026-11-01
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p31337:
    DestinationIp:
      - 132.243.222.250
      - 144.31.220.111
      - 31.76.111.236
      - 31.76.111.31
    DestinationPort: 31337
  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