# publicmosaic.sigma.yml — generated 2026-10-30 19:37 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: cert 657dae248f6e824530579823070188c239adabf108d3d85d8701124e4ebd290e — https://publicmosaic.com/cert/657dae248f6e824530579823070188c239adabf108d3d85d8701124e4ebd290e
# 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: 'Certificate 657dae248f6e8245… — connections to listed C2 hosts'
id: 967e03d4-79cf-88fe-9557-84a39296a965
status: experimental
description: 'Outbound connection to an address Public Mosaic listed as a C2 host when this file was generated.'
references:
  - 'https://publicmosaic.com/cert/657dae248f6e824530579823070188c239adabf108d3d85d8701124e4ebd290e'
author: 'Public Mosaic'
date: 2026-10-18
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p4321:
    DestinationIp:
      - 165.154.232.29
      - 45.77.180.52
    DestinationPort: 4321
  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