public mosaic llc support@publicmosaic.com
confirmed host

IP address 8.163.98.217

Cobalt Strikecommand-and-control server · :443

Last confirmed 2026-09-15, first seen 2026-08-28. On AS37963.

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

8.163.98.217:443 · Cobalt Strike

Last confirmed (today)

first seen2026-08-28 06:15 UTC
serviceip-port · tcp · HTTPS blend-in
observed hostcdn.static-lib.com
networkAS37963 · Hangzhou Alibaba Advertising
confidence100 / 100
tls certificate9c2a9f3ab78445641850bf12b87bd0cd88ac39275c8316406cf788ee584a60c6
cert subjectcdn.static-lib.com
cert subject orgStatic CDN Network
cert issuercdn.static-lib.com
cert issuer orgStatic CDN Network
cert validity2026-08-26 → 2027-08-26
cert typeself-signed
cert key2048-bit
cert serial (decimal)163372828

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
cs watermark987654321

Beacon configuration

callback8.163.98.217 · same as this host
beacon typeHTTPS
cs versionCobalt Strike 4.8 (Feb 28, 2023)
getGET /static/js/app.3a7e9b2c.js
postPOST /static/js/chunk-vendors.8a3f2c1d.js
user-agentMozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 Edg/124.0.0.0
sleep45s ±37%
watermark987654321
server key md5c144824ed58b2c84d2f69d0d12f2c96c
inject stube43a1b63f09794f74d90a9889f7acb77
spawn to x86%windir%\syswow64\dllhost.exe
spawn to x64%windir%\sysnative\dllhost.exe

Observation history

18d agotoday

Observed on 18 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 · 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 · 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.

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

Pivots & lookups