public mosaic llc support@publicmosaic.com
confirmed host

IP address 176.120.22.129

PoshC2command-and-control server · :443

Last confirmed 2026-09-14, first seen 2026-09-06. On AS198953.

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

176.120.22.129:443 · PoshC2

Last confirmed (yesterday)

first seen2026-09-06 10:23 UTC
serviceip-port · tcp · HTTPS blend-in
networkAS198953 · Proton66 OOO
confidence100 / 100
tls certificate8e8c620ba17d92e20ca36c36e514271d54b3a48e42e728ec4b7a891e30bea17d
cert subjectP18055077
cert subject orgPajfds
cert issuerP18055077
cert issuer orgPajfds
cert validity2026-03-06 → 2036-03-03
cert typeself-signed
cert key2048-bit
cert serial (decimal)1000

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_000000000000

Observation history

18d agotoday

Observed on 9 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 · 44 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 44. Full cohort →

Neighbourhood · 176.120.22.0/24 · 1 host

1 other confirmed host 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