# publicmosaic.sigma.yml — generated 2026-10-30 19:07 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: asn 4808 — https://publicmosaic.com/asn/4808
# 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: 'AS4808 — connections to listed C2 hosts'
id: 7a124e72-733f-8231-b183-c74e3ef48614
status: experimental
description: 'Outbound connection to an address Public Mosaic listed as a C2 host when this file was generated.'
references:
  - 'https://publicmosaic.com/asn/4808'
author: 'Public Mosaic'
date: 2026-09-02
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p443:
    DestinationIp:
      - 106.75.7.239
      - 116.196.79.169
    DestinationPort: 443
  selection_p7777:
    DestinationIp:
      - 106.75.7.239
    DestinationPort: 7777
  selection_p8085:
    DestinationIp:
      - 123.123.74.83
    DestinationPort: 8085
  selection_p9958:
    DestinationIp:
      - 106.75.7.239
    DestinationPort: 9958
  selection_p9988:
    DestinationIp:
      - 117.50.81.40
    DestinationPort: 9988
  selection_p18084:
    DestinationIp:
      - 117.50.214.223
    DestinationPort: 18084
  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: 'AS4808 — beacon URI or user agent in a request to a listed host'
id: 1431aba6-09b1-8fad-b425-3acf580f7f1f
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/asn/4808'
author: 'Public Mosaic'
date: 2026-09-02
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: proxy
detection:
  selection_dst:
    DestinationIp:
      - 106.75.7.239
      - 116.196.79.169
      - 117.50.214.223
      - 117.50.81.40
      - 123.123.74.83
  selection_uri:
    c-uri|contains:
      - '/2/comments/create.json'
      - '/2/statuses/public_timeline.json'
  selection_ua:
    c-useragent:
      - 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36'
  condition: selection_dst and (selection_uri or selection_ua)
falsepositives:
  - 'A benign request to a listed address carrying a commodity user agent'
level: high