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Rule: Proxy suspicious downloads from Dyndns hosts

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Florian Roth 2017-11-08 11:32:30 +01:00
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rules/proxy/proxy_download_susp_dyndns.yml Normal file
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title: Download from Suspicious Dyndns Hosts
status: experimental
description: Detects download of certain file types from hosts with dynamic DNS names (selected list)
reference: https://www.alienvault.com/blogs/security-essentials/dynamic-dns-security-and-potential-threats
author: Florian Roth
date: 2017/11/08
logsource:
category: proxy
detection:
selection:
c-uri-extension:
- 'exe'
- 'vbs'
- 'bat'
- 'rar'
- 'ps1'
- 'doc'
- 'docm'
- 'xls'
- 'xlsm'
- 'pptm'
- 'rtf'
- 'hta'
- 'dll'
- 'ws'
- 'wsf'
- 'sct'
- 'zip'
# If you want to add more extensions - see https://docs.google.com/spreadsheets/d/1TWS238xacAto-fLKh1n5uTsdijWdCEsGIM0Y0Hvmc5g/
r-dns:
- '*.hopto.org'
- '*.no-ip.org'
- '*.no-ip.info'
- '*.no-ip.biz'
- '*.no-ip.com'
- '*.noip.com'
- '*.ddns.name'
- '*.myftp.org'
- '*.myftp.biz'
- '*.serveblog.net'
- '*.servebeer.com'
- '*.servemp3.com'
- '*.serveftp.com'
- '*.servequake.com'
- '*.servehalflife.com'
- '*.servehttp.com'
- '*.servegame.com'
- '*.servepics.com'
- '*.myvnc.com'
- '*.ignorelist.com'
- '*.jkub.com'
- '*.dlinkddns.com'
- '*.jumpingcrab.com'
- '*.ddns.info'
- '*.mooo.com'
- '*.dns-dns.com'
- '*.strangled.net'
- '*.ddns.info'
- '*.adultdns.net'
- '*.craftx.biz'
- '*.ddns01.com'
- '*.dns53.biz'
- '*.dnsapi.info'
- '*.dnsd.info'
- '*.dnsdynamic.com'
- '*.dnsdynamic.net'
- '*.dnsget.org'
- '*.fe100.net'
- '*.flashserv.net'
- '*.ftp21.net'
- '*.http01.com'
- '*.http80.info'
- '*.https443.com'
- '*.imap01.com'
- '*.kadm5.com'
- '*.mysq1.net'
- '*.ns360.info'
- '*.ntdll.net'
- '*.ole32.com'
- '*.proxy8080.com'
- '*.sql01.com'
- '*.ssh01.com'
- '*.ssh22.net'
- '*.tempors.com'
- '*.tftpd.net'
- '*.ttl60.com'
- '*.ttl60.org'
- '*.user32.com'
- '*.voip01.com'
- '*.wow64.net'
- '*.x64.me'
- '*.xns01.com'
- '*.dyndns.org'
- '*.dyndns.info'
- '*.dyndns.tv'
- '*.dyndns-at-home.com'
- '*.dnsomatic.com'
- '*.zapto.org'
- '*.webhop.net'
- '*.25u.com'
- '*.slyip.net'
condition: selection
fields:
- cs-ip
- c-uri
falsepositives:
- Software downloads
level: medium