public mosaic llc support@publicmosaic.com
confirmed host

IP address 52.87.32.4

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

Last confirmed 2026-09-07, first seen 2026-09-02. On AS14618. 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.

52.87.32.4:50050 · Cobalt Strike

Last confirmed (7 days ago)

first seen2026-09-02 11:06 UTC
serviceip-port · tcp · Cobalt Strike team server default
networkAS14618 · Amazon.com
confidence100 / 100
tls certificate2b1338db59e29d09d25f02426db4d0821411c7ed4e5003595e5e8aa1f3d2a97c
cert subjectMajor Cobalt Strike
cert subject orgcobaltstrike
cert issuerMajor Cobalt Strike
cert issuer orgcobaltstrike
cert validity2026-08-17 → 2026-11-15
cert typeself-signed
cert key3072-bit
cert serial (decimal)14750544041399688407

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

52.87.32.4:443 · Cobalt Strike

Last confirmed (7 days ago)

first seen2026-09-02 11:06 UTC
serviceip-port · tcp · HTTPS blend-in
networkAS14618 · Amazon.com
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

Observation history

18d agotoday

Observed on 6 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 →

Pivots & lookups