public mosaic llc support@publicmosaic.com
confirmed host

IP address 167.17.47.252

Cobalt Strikecommand-and-control server · :50050, :443

Last confirmed 2026-09-15, first seen 2026-09-05. On AS43180. 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 — :50050, :443.

167.17.47.252:50050 · Cobalt Strike

Last confirmed (today)

first seen2026-09-08 13:17 UTC
serviceip-port · tcp · Cobalt Strike team server default
observed hostmicrosoft.com
networkAS43180 · Trunk Networks
confidence100 / 100
tls certificate5d8b7ada3a4f9e2e98214f7378a3823a4509f0c7dd7e38a71b2b9cdcd7e761e6
cert subject*.microsoft.com
cert subject orgMicrosoft Corporation
cert issuer*.microsoft.com
cert issuer orgMicrosoft Corporation
cert validity2026-09-06 → 2026-12-05
cert typeself-signed
cert key2048-bit
cert serial (decimal)18009016956228114199

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

167.17.47.252:443 · Cobalt Strike

Last confirmed (today)

first seen2026-09-05 21:27 UTC
serviceip-port · tcp · HTTPS blend-in
networkAS43180 · Trunk Networks
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 watermark391144938

Beacon configuration

beacon typeHTTPS
cs versionCobalt Strike 4.7 (Aug 17, 2022)
getGET /Go/v5.89/Assets
postPOST /Go/v5.89/Collect
user-agentMozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36
sleep1s ±20%
watermark391144938
server key md5749be3f95bc97f8335ca8f7bf4f2cd44
inject stubb50b86d735412685eb6044ad8d01781c
spawn to x86%windir%\syswow64\svchost.exe
spawn to x64%windir%\sysnative\svchost.exe

Observation history

18d agotoday

Observed on 11 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 · 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 · 167.17.47.0/24 · 2 hosts

2 other confirmed hosts 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