DNS Query to External Service Interaction Domains

calendar Jan 24, 2026 · attack.initial-access attack.t1190 attack.reconnaissance attack.t1595.002  ·
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Detects suspicious DNS queries to external service interaction domains often used for out-of-band interactions after successful RCE

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 1title: DNS Query to External Service Interaction Domains
 2id: aff715fa-4dd5-497a-8db3-910bea555566
 3status: test
 4description: |
 5        Detects suspicious DNS queries to external service interaction domains often used for out-of-band interactions after successful RCE
 6references:
 7    - https://twitter.com/breakersall/status/1533493587828260866
 8    - https://www.bitdefender.com/en-us/blog/businessinsights/bitdefender-advisory-critical-unauthenticated-rce-windows-server-update-services-cve-2025-59287
 9    - https://github.com/SigmaHQ/sigma/pull/5724#issuecomment-3466382234
10author: Florian Roth (Nextron Systems), Matt Kelly (list of domains)
11date: 2022-06-07
12modified: 2026-01-24
13tags:
14    - attack.initial-access
15    - attack.t1190
16    - attack.reconnaissance
17    - attack.t1595.002
18logsource:
19    category: dns
20detection:
21    selection:
22        query|endswith:
23            - '.burpcollaborator.net' # Portswigger Burpsuite Collaborator
24            - '.canarytokens.com' # Thinkst Canary Canarytokens
25            - '.ceye.io'
26            - '.ddns.1443.eu.org' # dig.pm
27            - '.ddns.bypass.eu.org' # dig.pm
28            - '.ddns.xn--gg8h.eu.org' # dig.pm
29            - '.digimg.store' # dnslog.ink
30            - '.dns.su18.org' # javaweb.org
31            - '.dnshook.site' # webhook.site
32            - '.dnslog.cn'
33            - '.dnslog.ink' # dnslog.ink
34            - '.instances.httpworkbench.com' # httpworkbench.com
35            - '.interact.sh' # Project Discovery Interactsh
36            - '.log.dnslog.pp.ua' # dnslog.org
37            - '.log.dnslog.qzz.io' # dnslog.org
38            - '.log.dnslogs.dpdns.org' # dnslog.org
39            - '.log.javaweb.org' # javaweb.org
40            - '.log.nat.cloudns.ph' # dnslog.org
41            - '.oast.fun' # Project Discovery Interactsh
42            - '.oast.live' # Project Discovery Interactsh
43            - '.oast.me' # Project Discovery Interactsh
44            - '.oast.online' # Project Discovery Interactsh
45            - '.oast.pro' # Project Discovery Interactsh
46            - '.oast.site' # Project Discovery Interactsh
47            - '.oastify.com' # Portswigger Burpsuite Collaborator
48            - '.p8.lol' # javaweb.org
49            - '.requestbin.net'
50    filter_main_polling:
51        query|contains: 'polling.oastify.com'
52    condition: selection and not 1 of filter_main_*
53falsepositives:
54    - Legitimate security scanning.
55level: high

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