public mosaic llc support@publicmosaic.com
confirmed host

IP address 113.52.135.27

Cobalt Strikecommand-and-control server · :50050

Last confirmed 2026-08-31, first seen 2026-08-27. On AS133380.

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

113.52.135.27:50050 · Cobalt Strike

Last confirmed (14 days ago)

first seen2026-08-27 16:18 UTC
serviceip-port · tcp · Cobalt Strike team server default
networkAS133380 · Layerstack
confidence100 / 100
tls certificate4bc5cc527529266c9be1443b5249d49728b179ff5f01b594d45d9d98dccf88a0
cert subjectMajor Cobalt Strike
cert subject orgcobaltstrike
cert issuerMajor Cobalt Strike
cert issuer orgcobaltstrike
cert validity2026-08-13 → 2026-11-11
cert typeself-signed
cert key2048-bit
cert serial (decimal)187615063

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 3 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