# publicmosaic.sigma.yml — generated 2026-10-30 18:37 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: cert 2623eab9853231c1de8f513309e6a31c4485815a6cb0f67fba707a1e7dc5e9ea — https://publicmosaic.com/cert/2623eab9853231c1de8f513309e6a31c4485815a6cb0f67fba707a1e7dc5e9ea
# 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 2623eab9853231c1… — connections to listed C2 hosts'
id: 79bda7b7-1923-8f15-9394-dc262501ae98
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/2623eab9853231c1de8f513309e6a31c4485815a6cb0f67fba707a1e7dc5e9ea'
author: 'Public Mosaic'
date: 2026-09-07
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p4321:
    DestinationIp:
      - 192.253.226.10
      - 43.225.157.17
    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