Public Mosaic C2 indicators
confirmed host

121.41.70.79

Adaptixcommand-and-control server · :9966

On AS37963.

listed last confirmed feed checked TLP:CLEAR Suricata rules Show in the live feed

Relations

Values this address shares with other hosts in this archive, rarest first. A shared value says the hosts were set up alike, not that one operator runs them.

SharedValueOther hosts
JA4X templatec9d784bbb12e_c9d784bbb12e_795797892f9c25 other hosts · 25 listed

Not shared with any other host in this archive: 1 certificate.

Network context

SharedValueOther hosts
NetworkAS37963 · Hangzhou Alibaba Advertising431 other hosts · 430 listed

Hosts near this one, for context only.

Summary

First seen by the scanner2026-09-23
In this archive since2026-09-23
Evidence1 certificate
Look up elsewhereVirusTotal · Shodan · Censys
About this listingWhat a listing means · Is this your address?

Observation history

Listed on 38 of the 63 days since this archive began recording, 2026-08-29 UTC.

  1. listed
  2. :9966

2026-08-292026-10-30

  • first seen to last confirmed
  • listed after its last confirmation

A marked day is a UTC day the feed listed this address. The feed keeps a listener for up to 90 days after its last confirmation, so a listed day is not a confirmation. A listener no longer in the feed is drawn to its last confirmation.

Listed days as dates
  • 2026-09-23 – 2026-10-30 (38 days)

121.41.70.79:9966 · Adaptix

Last confirmed (37 days ago)

first seen2026-09-23 06:10 UTC
serviceip-port · tcp
networkAS37963 · Hangzhou Alibaba Advertising
confidence100 / 100
tls certificateb777a15492339ea004ee6a787f8e30fa9a91e0a2087a4b7fad476e6451e63d5f
cert subject121.41.70.79
cert subject orgNywb
cert issuer121.41.70.79
cert issuer orgNywb
cert validity2026-09-20 → 2036-09-17
cert typeself-signed
cert key2048-bit
cert serial (hex)1fc80e6afe4fefeea37a58b5f35b861fba156606
cert serial (decimal)181440118915218056926449582438452223491672729094

The names above are what the certificate claims, not proof that this host owns them. Treat a familiar name as a likely impersonation.

ja4xc9d784bbb12e_c9d784bbb12e_795797892f9c

Hosts sharing a value with this one

25 other hosts in this archive share at least one value with this one. Each is listed once, under its first shared value in Relations order. Dates and status are from the records that share a value.

AddressFamilySharesLast confirmedStatus
JA4X template · 25 other hosts · 25 listed

These hosts’ certificates share one JA4X template, which points to the same certificate tooling. It is not evidence of a single operator.

187.44.3.98DanabotJA4X templatelisted
109.74.144.151AdaptixJA4X templatelisted
8.136.13.87AdaptixJA4X templatelisted
45.112.206.54AdaptixJA4X templatelisted
38.54.88.188AdaptixJA4X templatelisted
20.118.221.53AdaptixJA4X templatelisted
186.244.214.231AdaptixJA4X templatelisted
124.220.11.206AdaptixJA4X templatelisted
149.50.135.215AdaptixJA4X templatelisted
192.3.139.18AdaptixJA4X templatelisted
45.128.156.112AdaptixJA4X templatelisted
103.253.212.216AdaptixJA4X templatelisted
80.96.108.225AdaptixJA4X templatelisted
43.161.250.35AdaptixJA4X templatelisted
45.207.211.207AdaptixJA4X templatelisted
35.212.135.58AdaptixJA4X templatelisted
31.220.93.222AdaptixJA4X templatelisted
38.54.8.74AdaptixJA4X templatelisted
149.202.227.107AdaptixJA4X templatelisted
94.102.49.164AdaptixJA4X templatelisted
66.179.30.218AdaptixJA4X templatelisted
109.237.64.48AdaptixJA4X templatelisted
162.14.124.25AdaptixJA4X templatelisted
198.13.51.245AdaptixJA4X templatelisted
167.254.241.29AdaptixJA4X templatelisted

Deploy

Suricata rules and hunt queries for this address’s 1 listed listener.

Suricata rules

Each query searches the last 30 days of your logs for connections to these listeners. Queries hold only addresses, ports and file hashes.

Microsoft Defender XDR (KQL)
DeviceNetworkEvents
| where Timestamp > ago(30d)
| where (RemoteIP == "121.41.70.79" and RemotePort in (9966))
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "121.41.70.79" and DestinationPort in (9966))
Splunk (SPL, CIM data models)
| tstats summariesonly=false count min(_time) as first_time max(_time) as last_time
    from datamodel=Network_Traffic where earliest=-30d
    ((All_Traffic.dest_ip="121.41.70.79" (All_Traffic.dest_port=9966)))
    by All_Traffic.src_ip All_Traffic.dest_ip All_Traffic.dest_port
Elastic (EQL)
network where
  (destination.ip == "121.41.70.79" and destination.port in (9966))

Cite this record

Plain text, for a ticket or a report
Address 121.41.70.79 Family Adaptix (command-and-control server) Ports :9966 Status listed (feed checked 2026-10-30 18:37 UTC) First seen 2026-09-23 Last confirmed 2026-09-23 Record https://publicmosaic.com/ip/121.41.70.79 Source Public Mosaic, TLP:CLEAR