public mosaic llc support@publicmosaic.com
confirmed host

IP address 43.139.108.161

vShellCobalt Strikecontrollers · :40010, :8192, :50050

Last confirmed 2026-09-15, first seen 2026-08-23. On AS45090.

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

This address answered on 3 ports — :40010, :8192, :50050, across 2 malware families.

43.139.108.161:40010 · vShell

Last confirmed (today)

first seen2026-09-06 05:33 UTC
serviceip-port · tcp
networkAS45090 · Shenzhen Tencent Computer Systems Com…
confidence100 / 100

vShell configuration

Operator-supplied settings recovered by detonating a captured sample in a sandbox — the configured command-and-control host, mutex and campaign, not a live reading of this address.

c2 host43.139.108.161 · same as this host

43.139.108.161:8192 · Cobalt Strike

Last confirmed (today)

first seen2026-09-02 10:52 UTC
serviceip-port · tcp
networkAS45090 · Shenzhen Tencent Computer Systems Com…
confidence100 / 100
cs watermark987654321

Beacon configuration

callback43.139.108.161 · same as this host
beacon typeHTTP
cs versionCobalt Strike 4.8 (Feb 28, 2023)
getGET /ptj
postPOST /submit.php
user-agentMozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
sleep60s ±0%
watermark987654321
server key md529ae5074f12070eb01751d453ec2f1b0
inject stube43a1b63f09794f74d90a9889f7acb77
spawn to x86%windir%\syswow64\rundll32.exe
spawn to x64%windir%\sysnative\rundll32.exe

43.139.108.161:50050 · Cobalt Strike

Last confirmed (today)

first seen2026-08-23 03:23 UTC
serviceip-port · tcp · Cobalt Strike team server default
networkAS45090 · Shenzhen Tencent Computer Systems Com…
confidence100 / 100
tls certificate7d9cadb480b05c944c3a4ba94a8a746d0ecba67c4b5697fcea15a52f3275445a
cert subjectMajor Cobalt Strike
cert subject orgcobaltstrike
cert issuerMajor Cobalt Strike
cert issuer orgcobaltstrike
cert validity2026-03-17 → 2026-06-15
cert typeself-signed
cert key2048-bit
cert serial (decimal)964132423

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 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.

Samples served · 3 files

Files this address was observed DELIVERING, confirmed as malware by detonation or by analysis of the file itself. Delivery is an observation, not an attribution — a widely distributed sample can reach unrelated hosts.

Pivots & lookups