public mosaic llc support@publicmosaic.com
confirmed host

IP address 23.148.212.123

Cobalt Strikecommand-and-control server · :2053

Last confirmed 2026-09-15, first seen 2026-08-28. On AS62468.

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

23.148.212.123:2053 · Cobalt Strike

Last confirmed (today)

first seen2026-08-28 23:08 UTC
serviceip-port · tcp
observed hostuploadimgae.cfd
networkAS62468 · VpsQuan
confidence100 / 100
tls certificateab98cb64960c77bcc8734dc53aad62d8482664b32e2d1adab74dd5004c5bc42a
cert subjectCloudFlare Origin Certificate
cert subject orgCloudFlare, Inc.
cert issuer orgCloudFlare, Inc.
cert validity2026-02-10 → 2041-02-06
cert typeCA-signed
cert key2048-bit
cert serial (decimal)327523344912877256153071083346824887512218385915
cert names*.uploadimgae.cfd uploadimgae.cfd

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.

ja4xdc020972a4a8_9fb583da09a2_fb02ba79e164
jarm2ad2ad16d2ad2ad00042d42d00042ddb04deffa1705e2edc44cae1ed24a4da
cs watermark987654321

Beacon configuration

callbackapi.imageprovidjs.shop · operator-supplied; a redirector or impersonation target, not an attribution
beacon typeHTTPS
cs versionCobalt Strike 4.9 (Sep 19, 2023)
getGET /jquery-3.3.1.min.js
postPOST /jquery-3.3.2.min.js
user-agentMozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36
sleep10s ±37%
watermark987654321
server key md59e72a27fe25e89c9f82ec7de8e043a5d
inject stubae5afcfee8026674dc8f3b4f2da46c7f
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 · 19 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 →

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.

Neighbourhood · 23.148.212.0/24 · 4 hosts

4 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