# publicmosaic.sigma.yml — generated 2026-10-30 19:37 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: cert 63a2da031ea5cbd764cb607ee9f438d051203d3e0b793b801dd63ab01b39d4da — https://publicmosaic.com/cert/63a2da031ea5cbd764cb607ee9f438d051203d3e0b793b801dd63ab01b39d4da
# 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 63a2da031ea5cbd7… — connections to listed C2 hosts'
id: 1d0bc2cd-ed9c-8b70-9c0d-136a13ba2760
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/63a2da031ea5cbd764cb607ee9f438d051203d3e0b793b801dd63ab01b39d4da'
author: 'Public Mosaic'
date: 2026-08-28
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p2053:
    DestinationIp:
      - 23.148.212.86
      - 82.158.89.214
    DestinationPort: 2053
  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
---
title: 'Certificate 63a2da031ea5cbd7… — beacon URI or user agent in a request to a listed host'
id: ac0e06e7-2c2f-8274-8ee7-ea233a5d98f4
status: experimental
description: 'A request to a listed address carrying a URI or user agent from a configuration recovered for these hosts. Both conditions are required: either value alone is common.'
references:
  - 'https://publicmosaic.com/cert/63a2da031ea5cbd764cb607ee9f438d051203d3e0b793b801dd63ab01b39d4da'
author: 'Public Mosaic'
date: 2026-08-28
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: proxy
detection:
  selection_dst:
    DestinationIp:
      - 23.148.212.86
      - 82.158.89.214
  selection_uri:
    c-uri|contains:
      - '/jquery-3.3.1.min.js'
      - '/jquery-3.3.2.min.js'
  selection_ua:
    c-useragent:
      - 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0'
  condition: selection_dst and (selection_uri or selection_ua)
falsepositives:
  - 'A benign request to a listed address carrying a commodity user agent'
level: high