public mosaic llc support@publicmosaic.com
confirmed host

IP address 189.1.218.195

Cobalt Strikecommand-and-control server · :8443

Last confirmed 2026-09-15, first seen 2026-09-02. On AS136907.

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

189.1.218.195:8443 · Cobalt Strike

Last confirmed (today)

first seen2026-09-02 10:55 UTC
serviceip-port · tcp · alt-HTTPS
observed hostksowps.cn
networkAS136907 · HUAWEI CLOUDS
confidence100 / 100
tls certificated258e6bc501045f8960043d8e87ebfecf480196153d9871cf1a7ac9d8c449187
cert subjectksowps.cn
cert issuerE5
cert issuer orgLet's Encrypt
cert validity2024-09-20 → 2024-12-19
cert typeCA-signed
cert key256-bit
cert serial (decimal)279766732659141656773544807912576861005050
cert namesksowps.cn web.ksowps.cn www.ksowps.cn

The certificate names above were validated by the issuing authority at issuance. They describe the certificate, not conduct by the names' owner — a legitimately issued certificate can be deployed on a listed host by whoever holds its private key, so treat the name as a pivot to investigate rather than as an attribution.

ja4xa373a9f83c6b_7022c563de38_821a8ec155c6
jarm28d28d28d00028d00042d42d00042d02cacad88cde684d16d82eeb4da1108c
cs watermark999999

Beacon configuration

callbackweb.ksowps.cn · operator-supplied; a redirector or impersonation target, not an attribution
beacon typeHTTPS
cs versionCobalt Strike 4.4 (Aug 04, 2021)
getGET /api/3
postPOST /api/4
user-agentMozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727)
sleep60s ±0%
watermark999999
server key md5dc813d46a580475c26c90ceb8fc4ff5e
inject stube8cd0e56e0784a1c2460e135a8ea8f0d
spawn to x86%windir%\syswow64\rundll32.exe
spawn to x64%windir%\sysnative\rundll32.exe

Observation history

18d agotoday

Observed on 14 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 · 2 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 →

Pivots & lookups