public mosaic llc support@publicmosaic.com
confirmed host

IP address 47.236.56.15

Cobalt Strikecommand-and-control server · :4445, :50050

Last confirmed 2026-09-14, first seen 2026-09-07. On AS45102. Its certificate is shared with 99 other confirmed hosts.

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

This address answered on 2 ports — :4445, :50050.

47.236.56.15:4445 · Cobalt Strike

Last confirmed (today)

first seen2026-09-07 13:36 UTC
serviceip-port · tcp
networkAS45102 · Alibaba (US) Technology
confidence100 / 100
tls certificate87f2085c32b6a2cc709b365f55873e207a9caa10bffecf2fd16d3cf9d94d390c
cert validity2015-05-20 → 2025-05-17
cert typeself-signed
cert key2048-bit
cert serial (decimal)146473198

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
cs watermark0

Beacon configuration

callback47.236.56.15 · same as this host
beacon typeHTTPS
cs versionCobalt Strike 4.3 (Mar 03, 2021)
getGET /IE9CompatViewList.xml
postPOST /submit.php
user-agentMozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)
sleep60s ±0%
watermark0
server key md5e9ae865f5ce035176457188409f6020a
inject stub32cd41edf0810c5b5f498edf4731cc6d
spawn to x86%windir%\syswow64\rundll32.exe
spawn to x64%windir%\sysnative\rundll32.exe

47.236.56.15:50050 · Cobalt Strike

Last confirmed (today)

first seen2026-09-07 13:31 UTC
serviceip-port · tcp · Cobalt Strike team server default
observed hostoutlook.live.com
networkAS45102 · Alibaba (US) Technology
confidence100 / 100
tls certificate12141108173fe7f1e1e1c53e2657357a975e639e45b65c005428ee06dccc3f3f
cert subjectOutlook.live.com
cert subject orgMicrosoft Corporation
cert issuerOutlook.live.com
cert issuer orgMicrosoft Corporation
cert validity2025-11-07 → 2026-02-05
cert typeself-signed
cert key2048-bit
cert serial (decimal)1382652453

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 8 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 certificates · 99 hosts

This address served 2 distinct certificates. The hosts below share at least one of them — the set is a union, not a single cluster.

Showing 24 of 99. The rest are reachable from any of them.

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 · 6 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.

Pivots & lookups