public mosaic llc support@publicmosaic.com
confirmed host

IP address 40.67.146.12

Cobalt Strikecommand-and-control server · :443

Last confirmed 2026-09-15, first seen 2026-09-06. On AS8075.

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

40.67.146.12:443 · Cobalt Strike

Last confirmed (today)

first seen2026-09-06 11:44 UTC
serviceip-port · tcp · HTTPS blend-in
observed hostch2tech.com
networkAS8075 · Microsoft
confidence100 / 100
tls certificate206a64c0ac01d02eb8750d72f88f009339dbc550209060cf1bf5e7f4087c3078
cert subjectch2tech.com
cert issuerE7
cert issuer orgLet's Encrypt
cert validity2026-03-11 → 2026-06-09
cert typeCA-signed
cert key256-bit
cert serial (decimal)566614809103678376833054589170971844618128
cert namesch2tech.com

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_2e3757343cb0
jarm28d28d28d00028d00042d42d00042de0d120da90d5910c5de2af43b74a6bd8

Observation history

18d agotoday

Observed on 10 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 · 154 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 154. Full cohort →

Pivots & lookups