public mosaic llc support@publicmosaic.com
confirmed host

217.154.212.25

Cobalt Strikecommand-and-control server · :8443, :50050

Last confirmed 2026-09-15, first seen 2026-08-28. On AS8560.

listed last confirmed feed checked TLP:CLEAR SURICATA .RULES SEE THE LIVE FEED →

This address answered on 2 ports — :8443, :50050.

217.154.212.25:8443 · Cobalt Strike

Last confirmed (5 days ago)

first seen2026-09-10 01:09 UTC
serviceip-port · tcp · alt-HTTPS
observed hostc2.tailc223d4.ts.net
networkAS8560 · IONOS SE
confidence100 / 100
tls certificate89cc92199152c28bbaec5937bda48a2ce14d016cfb4e7a9bbcc7c2f60fa69d34
cert subjectc2.tailc223d4.ts.net
cert subject orgOrganization
cert issuerc2.tailc223d4.ts.net
cert issuer orgOrganization
cert validity2026-08-05 → 2027-08-05
cert typeself-signed
cert key2048-bit
cert serial (decimal)200515139733466792197743165224192506808488138546

The certificate names above are what the certificate ASSERTS, not proof this host owns them — a self-signed certificate can claim any subject, so treat a familiar name here as an impersonation attempt rather than an identity.

ja4x2bab15409345_2bab15409345_795797892f9c
jarm2ad2ad16d2ad2ad00042d42d00042ddb04deffa1705e2edc44cae1ed24a4da
cs watermark987654321

Beacon configuration

callback100.87.53.0 · operator-supplied; a redirector or impersonation target, not an attribution
beacon typeHTTPS
cs versionCobalt Strike 4.9 (Sep 19, 2023)
getGET /owa/W2XHrww1-mGgTENEHqF4e0vLC3u
postGET /owa/LhxOkLqfzldjHZf5QsFnX
user-agentMozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36
sleep30s ±25%
watermark987654321
server key md521cfe840295902a8c0f905baee1ad6a6
inject stubae5afcfee8026674dc8f3b4f2da46c7f
spawn to x86%windir%\syswow64\dllhost.exe
spawn to x64%windir%\sysnative\dllhost.exe

217.154.212.25:50050 · Cobalt Strike

Last confirmed (today)

first seen2026-08-28 22:02 UTC
serviceip-port · tcp · Cobalt Strike team server default
networkAS8560 · IONOS SE
confidence100 / 100
tls certificate30d01468fc847356eec11870a38e95f725c8087c25ab1ab9cfd27cfdd1401aeb
cert subjectPwn3rs Striked
cert subject orgPwn3rs
cert issuerPwn3rs Striked
cert issuer orgPwn3rs
cert validity2026-08-05 → 2026-11-03
cert typeself-signed
cert key3072-bit
cert serial (decimal)9611544307411350345

The certificate names above are what the certificate ASSERTS, not proof this host owns them — a self-signed certificate can claim any subject, so treat a familiar name here as an impersonation attempt rather than an identity.

ja4x2166164053c1_2166164053c1_30d204a01551
jarm2ad2ad16d2ad2ad00042d42d00042ddb04deffa1705e2edc44cae1ed24a4da

Observation history

18d agotoday

Observed on 9 of the 18 days since this archive began recording, 2026-08-29 UTC. Presence is per UTC day: a day is marked when the scanner confirmed this address at least once, not once per scan.

Shared JA4X issuance template · 290 hosts

These hosts issued certificates from the same template — the same distinguished-name fields hashed in the same order. It links tooling, not necessarily an operator.

1.14.104.208Cobalt Strike1.14.234.68Adaptix1.15.76.39Cobalt Strike101.126.10.34Cobalt Strike101.200.193.211Cobalt Strike101.200.29.195Cobalt Strike101.200.85.0Cobalt Strike101.201.103.158Cobalt Strike101.201.109.2Cobalt Strike101.33.200.145Cobalt Strike101.33.225.32Cobalt Strike101.35.238.122Cobalt Strike101.36.123.12Adaptix101.42.136.73Cobalt Strike101.42.255.92Cobalt Strike101.43.103.154Cobalt Strike102.203.116.201Cobalt Strike103.119.47.222Cobalt Strike103.12.148.37Cobalt Strike103.204.174.212Cobalt Strike103.212.186.85Cobalt Strike103.27.111.130Cobalt Strike103.6.169.62Cobalt Strike104.168.102.116Cobalt Strike

Showing 24 of 290. The rest are reachable from any of them.

Shared Cobalt Strike watermark · 108 hosts

A watermark identifies the Cobalt Strike licence a beacon was generated from. Hosts sharing one were built from the same copy of the software — which is not the same as one operator, since cracked and leaked builds circulate widely and share a watermark by definition.

1.15.76.39Cobalt Strike1.94.65.9Cobalt Strike101.200.193.211Cobalt Strike101.201.103.158Cobalt Strike101.42.136.73Cobalt Strike103.119.47.222Cobalt Strike103.217.186.180Cobalt Strike104.168.102.116Cobalt Strike106.15.10.2Cobalt Strike111.228.4.54Cobalt Strike111.231.116.164Cobalt Strike115.159.226.190Cobalt Strike115.190.161.178Cobalt Strike115.190.250.28Cobalt Strike116.198.233.179Cobalt Strike117.50.184.221Cobalt Strike117.72.242.9Cobalt Strike118.24.172.48Cobalt Strike118.89.79.131Cobalt Strike118.89.88.183Cobalt Strike119.45.160.160Cobalt Strike120.55.3.157Cobalt Strike120.55.93.58Cobalt Strike120.77.254.122Cobalt Strike

Showing 24 of 108. The rest are reachable from any of them.

Pivots & lookups

same asn → 11 other hosts lookups: virustotal · shodan · censys

Listed in error?

This page is generated from automated scanning and is publicly available. If you are responsible for this address and it should not be listed, write to support@publicmosaic.com — see abuse & takedown for what we need and what happens next, or opt-out to exclude a whole range from scanning.

Addresses are frequently compromised third-party hosts rather than infrastructure their owner stood up. A listing records what a scan observed at a point in time; it is not an allegation about whoever pays for the address.