# publicmosaic.sigma.yml — generated 2026-10-30 19:07 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: asn 218731 — https://publicmosaic.com/asn/218731
# covers listed listeners only; archived listings omitted: 3
# A withdrawal can take up to five minutes to reach this file. Each address's page under publicmosaic.com/ip/ is authoritative.
title: 'AS218731 — connections to listed C2 hosts'
id: a6bea7b7-4cee-8039-8645-2e594c901869
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/218731'
author: 'Public Mosaic'
date: 2026-08-25
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p5000:
    DestinationIp:
      - 31.77.170.141
    DestinationPort: 5000
  selection_p5173:
    DestinationIp:
      - 150.241.124.167
      - 185.238.191.45
    DestinationPort: 5173
  selection_p6767:
    DestinationIp:
      - 31.77.138.10
    DestinationPort: 6767
  selection_p7443:
    DestinationIp:
      - 31.77.248.3
    DestinationPort: 7443
  selection_p8888:
    DestinationIp:
      - 89.125.43.163
    DestinationPort: 8888
  selection_p31337:
    DestinationIp:
      - 31.77.220.141
    DestinationPort: 31337
  selection_p40056:
    DestinationIp:
      - 89.125.48.185
    DestinationPort: 40056
  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