Suspicious DNS Query for IP Lookup Service APIs

  1title: Suspicious DNS Query for IP Lookup Service APIs
  2id: ec82e2a5-81ea-4211-a1f8-37a0286df2c2
  3status: test
  4description: Detects DNS queries for IP lookup services such as "api.ipify.org" originating from a non browser process.
  5references:
  6    - https://www.binarydefense.com/analysis-of-hancitor-when-boring-begets-beacon
  7    - https://twitter.com/neonprimetime/status/1436376497980428318
  8    - https://www.trendmicro.com/en_us/research/23/e/managed-xdr-investigation-of-ducktail-in-trend-micro-vision-one.html
  9author: Brandon George (blog post), Thomas Patzke
 10date: 2021/07/08
 11modified: 2024/03/22
 12tags:
 13    - attack.reconnaissance
 14    - attack.t1590
 15logsource:
 16    product: windows
 17    category: dns_query
 18detection:
 19    selection:
 20        - QueryName:
 21              - 'www.ip.cn'
 22              - 'l2.io'
 23        - QueryName|contains:
 24              - 'api.2ip.ua'
 25              - 'api.bigdatacloud.net'
 26              - 'api.ipify.org'
 27              - 'bot.whatismyipaddress.com'
 28              - 'canireachthe.net'
 29              - 'checkip.amazonaws.com'
 30              - 'checkip.dyndns.org'
 31              - 'curlmyip.com'
 32              - 'db-ip.com'
 33              - 'edns.ip-api.com'
 34              - 'eth0.me'
 35              - 'freegeoip.app'
 36              - 'geoipy.com'
 37              - 'getip.pro'
 38              - 'icanhazip.com'
 39              - 'ident.me'
 40              - 'ifconfig.io'
 41              - 'ifconfig.me'
 42              - 'ip-api.com'
 43              - 'ip.360.cn'
 44              - 'ip.anysrc.net'
 45              - 'ip.taobao.com'
 46              - 'ip.tyk.nu'
 47              - 'ipaddressworld.com'
 48              - 'ipapi.co'
 49              - 'ipconfig.io'
 50              - 'ipecho.net'
 51              - 'ipinfo.io'
 52              - 'ipip.net'
 53              - 'ipof.in'
 54              - 'ipv4.icanhazip.com'
 55              - 'ipv4bot.whatismyipaddress.com'
 56              - 'ipv6-test.com'
 57              - 'ipwho.is'
 58              - 'jsonip.com'
 59              - 'myexternalip.com'
 60              - 'seeip.org'
 61              - 'wgetip.com'
 62              - 'whatismyip.akamai.com'
 63              - 'whois.pconline.com.cn'
 64              - 'wtfismyip.com'
 65    filter_optional_brave:
 66        Image|endswith: '\brave.exe'
 67    filter_optional_chrome:
 68        Image:
 69            - 'C:\Program Files\Google\Chrome\Application\chrome.exe'
 70            - 'C:\Program Files (x86)\Google\Chrome\Application\chrome.exe'
 71    filter_optional_firefox:
 72        Image:
 73            - 'C:\Program Files\Mozilla Firefox\firefox.exe'
 74            - 'C:\Program Files (x86)\Mozilla Firefox\firefox.exe'
 75    filter_optional_ie:
 76        Image:
 77            - 'C:\Program Files (x86)\Internet Explorer\iexplore.exe'
 78            - 'C:\Program Files\Internet Explorer\iexplore.exe'
 79    filter_optional_maxthon:
 80        Image|endswith: '\maxthon.exe'
 81    filter_optional_edge_1:
 82        - Image|startswith: 'C:\Program Files (x86)\Microsoft\EdgeWebView\Application\'
 83        - Image|endswith: '\WindowsApps\MicrosoftEdge.exe'
 84        - Image:
 85              - 'C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe'
 86              - 'C:\Program Files\Microsoft\Edge\Application\msedge.exe'
 87    filter_optional_edge_2:
 88        Image|startswith:
 89            - 'C:\Program Files (x86)\Microsoft\EdgeCore\'
 90            - 'C:\Program Files\Microsoft\EdgeCore\'
 91        Image|endswith:
 92            - '\msedge.exe'
 93            - '\msedgewebview2.exe'
 94    filter_optional_opera:
 95        Image|endswith: '\opera.exe'
 96    filter_optional_safari:
 97        Image|endswith: '\safari.exe'
 98    filter_optional_seamonkey:
 99        Image|endswith: '\seamonkey.exe'
100    filter_optional_vivaldi:
101        Image|endswith: '\vivaldi.exe'
102    filter_optional_whale:
103        Image|endswith: '\whale.exe'
104    condition: selection and not 1 of filter_optional_*
105falsepositives:
106    - Legitimate usage of IP lookup services such as ipify API
107level: medium