# publicmosaic.sigma.yml — generated 2026-10-30 20:07 UTC — TLP:CLEAR
# source: https://publicmosaic.com — published for defensive use
# scope: asn 201670 — https://publicmosaic.com/asn/201670
# 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: 'AS201670 — connections to listed C2 hosts'
id: 5922a5f5-9ddd-8e44-b157-a79850814335
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/201670'
author: 'Public Mosaic'
date: 2026-10-02
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: network_connection
detection:
  selection_p80:
    DestinationIp:
      - 93.185.165.104
    DestinationPort: 80
  selection_p18963:
    DestinationIp:
      - 93.185.165.104
    DestinationPort: 18963
  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: 'AS201670 — beacon URI or user agent in a request to a listed host'
id: 5029560a-3241-827f-89fb-68c3ca902762
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/201670'
author: 'Public Mosaic'
date: 2026-10-02
modified: 2026-10-30
tags:
  - attack.command_and_control
  - tlp.clear
logsource:
  category: proxy
detection:
  selection_dst:
    DestinationIp:
      - 93.185.165.104
  selection_uri:
    c-uri|contains:
      - '/IMXo'
      - '/www/handle/doc'
  selection_ua:
    c-useragent:
      - 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)'
      - 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Trident/6.0)'
  condition: selection_dst and (selection_uri or selection_ua)
falsepositives:
  - 'A benign request to a listed address carrying a commodity user agent'
level: high