public mosaic llc support@publicmosaic.com
confirmed host

IP address 210.56.48.227

Cobalt Strikecommand-and-control server · :80, :8081

Last confirmed 2026-09-02, first seen 2026-08-23. On AS152194. Its certificate is shared with 31 other confirmed hosts.

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

This address answered on 2 ports — :80, :8081.

210.56.48.227:80 · Cobalt Strike

Last confirmed (12 days ago)

first seen2026-08-28 23:00 UTC
serviceip-port · tcp
networkAS152194 · CTG Server
confidence100 / 100
cs watermark391144938

Beacon configuration

callback210.56.48.227 · same as this host
beacon typeHTTP
cs versionCobalt Strike 4.7 (Aug 17, 2022)
getGET /jquery-3.3.1.min.js
postPOST /jquery-3.3.2.min.js
user-agentMozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko
sleep45s ±37%
watermark391144938
server key md51411562403605ec215d58dc9eae069a3
inject stubb50b86d735412685eb6044ad8d01781c
spawn to x86%windir%\syswow64\dllhost.exe
spawn to x64%windir%\sysnative\dllhost.exe

210.56.48.227:8081 · Cobalt Strike

Last confirmed (12 days ago)

first seen2026-08-23 03:23 UTC
serviceip-port · tcp
networkAS152194 · CTG Server
confidence100 / 100
tls certificate56a06a233bd30f693de25ef12cc19e8b2c92d3eb97dd969a2578df084c376478
cert subjectMajor Cobalt Strike
cert subject orgcobaltstrike
cert issuerMajor Cobalt Strike
cert issuer orgcobaltstrike
cert validity2022-08-30 → 2022-11-28
cert typeself-signed
cert key2048-bit
cert serial (decimal)659754494

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

Observation history

18d agotoday

Observed on 5 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 TLS certificate · 31 hosts

These hosts served the same certificate. That is the strongest link this corpus can draw between two addresses, though it evidences a shared BUILD rather than a shared operator: a leaked or resold profile puts the same certificate in different hands. Full cohort →

Showing 24 of 31. Full cohort →

Shared JA4X issuance template · 270 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. Full cohort →

Showing 24 of 270. Full cohort →

Shared Cobalt Strike watermark · 28 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.

Showing 24 of 28. The rest are reachable from any of them.

Neighbourhood · 210.56.48.0/24 · 1 host

1 other confirmed host in the same /24. Adjacent addresses under one operator are a different signal from a shared certificate — they suggest a block, not a build.

Pivots & lookups