# publicmosaic.sigma.yml — generated 2026-10-30 18:37 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: cert 269bc90b83c85ac50349794fa6a2a9a0ec1d0909ea87b2808a3fc6b13cd6fe3b — https://publicmosaic.com/cert/269bc90b83c85ac50349794fa6a2a9a0ec1d0909ea87b2808a3fc6b13cd6fe3b
# 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 269bc90b83c85ac5… — connections to listed C2 hosts'
id: 9bbb5886-56e1-8df7-9e46-b77868e82e8d
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/269bc90b83c85ac50349794fa6a2a9a0ec1d0909ea87b2808a3fc6b13cd6fe3b'
author: 'Public Mosaic'
date: 2026-08-28
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p443:
    DestinationIp:
      - 203.159.90.177
      - 45.139.104.199
      - 45.139.104.222
    DestinationPort: 443
  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