# publicmosaic.sigma.yml — generated 2026-10-30 19:37 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: cert 3f4dda76b647c4369949681cedfe14709946d4f9f8be6fd8a2654ea5bc8cd6d5 — https://publicmosaic.com/cert/3f4dda76b647c4369949681cedfe14709946d4f9f8be6fd8a2654ea5bc8cd6d5
# 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 3f4dda76b647c436… — connections to listed C2 hosts'
id: fe4064bd-0607-8e4a-a13e-1bcad79becc0
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/3f4dda76b647c4369949681cedfe14709946d4f9f8be6fd8a2654ea5bc8cd6d5'
author: 'Public Mosaic'
date: 2026-09-22
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p443:
    DestinationIp:
      - 146.19.125.141
      - 188.120.255.247
    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