confirmed host

IP address 196.251.121.52

Quasarremote-access trojan controller · :56001

On AS403005.

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

Relations

Network context

SharedValueOther hosts
/24196.251.121.0/245 other hosts · 5 listed
NetworkAS403005 · Blatant20 other hosts · 20 listed

Hosts near this one, for context only.

Summary

First seen by the scanner2026-09-30
Look up elsewhereVirusTotal · Shodan · Censys

Observation history

Listed on 31 of the 63 days since this archive began recording, 2026-08-29 UTC.

  1. listed
  2. :56001

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
  • 2026-09-30 – 2026-10-30 (31 days)

This listener was relabelled. Its most recent earlier label is shown; the date of the change is not recorded.

196.251.121.52:56001 · Quasar

Last confirmed (8 days ago)

first seen2026-09-30 06:05 UTC
serviceip-port · tcp
earlier labelQuasar-family
networkAS403005 · Blatant
confidence100 / 100

Neighbourhood · 196.251.121.0/24 · 5 other hosts

5 other hosts in this archive are in the same /24, shown for context.

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 == "196.251.121.52" and RemotePort in (56001))
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "196.251.121.52" and DestinationPort in (56001))
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="196.251.121.52" (All_Traffic.dest_port=56001)))
    by All_Traffic.src_ip All_Traffic.dest_ip All_Traffic.dest_port
Elastic (EQL)
network where
  (destination.ip == "196.251.121.52" and destination.port in (56001))

Cite this record

Plain text, for a ticket or a report
Address 196.251.121.52 Family Quasar (remote-access trojan controller) Ports :56001 Status listed (feed checked 2026-10-30 18:37 UTC) First seen 2026-09-30 Last confirmed 2026-10-22 Record https://publicmosaic.com/ip/196.251.121.52 Source Public Mosaic, TLP:CLEAR