public mosaic llc support@publicmosaic.com
confirmed host

IP address 120.79.64.164

Cobalt Strikecommand-and-control server · :50040

Last confirmed 2026-09-15, first seen 2026-09-02. On AS37963.

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

120.79.64.164:50040 · Cobalt Strike

Last confirmed (today)

first seen2026-09-02 11:11 UTC
serviceip-port · tcp
networkAS37963 · Hangzhou Alibaba Advertising
confidence100 / 100
tls certificate321ca611b00b3c7c30826456335d02c2341ca7f20cf8e80800524aa212206ba6
cert subjectMajor Cobalt Strike
cert subject orgcobaltstrike
cert issuerMajor Cobalt Strike
cert issuer orgcobaltstrike
cert validity2025-12-29 → 2026-03-29
cert typeself-signed
cert key2048-bit
cert serial (decimal)11383894960786026729

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 14 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 →

Pivots & lookups