confirmed host

IP address 101.42.49.202

Cobalt Strikecommand-and-control server · :6666

On AS45090.

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, weak links last. A shared value says the hosts were set up alike, not that one operator runs them.

SharedValueOther hosts
Cobalt Strike watermark987654321168 other hosts · 168 listed

A Cobalt Strike watermark is a weak link: cracked and leaked builds share one.

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

Network context

SharedValueOther hosts
NetworkAS45090 · Shenzhen Tencent Computer Systems Com…545 other hosts · 499 listed

Hosts near this one, for context only.

Summary

First seen by the scanner2026-11-01
Evidence1 beacon configuration · 1 file served
Look up elsewhereVirusTotal · Shodan · Censys

Observation history

Listed on 1 of the 65 days since this archive began recording, 2026-08-29 UTC.

  1. listed
  2. :6666

2026-08-292026-11-01

  • first seen to last confirmed

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
  • 2026-11-01 (1 day)

101.42.49.202:6666 · Cobalt Strike

Last confirmed (today)

first seen2026-11-01 06:07 UTC
serviceip-port · tcp
networkAS45090 · Shenzhen Tencent Computer Systems Com…
confidence100 / 100
cs watermark987654321

Beacon configuration

callback101.42.49.202 · same as this host
beacon typeHTTP
cs versionCobalt Strike 4.8 (Feb 28, 2023)
getGET /__utm.gif
postPOST /submit.php
get clientCookie
post clientContent-Type: application/octet-stream · id
user-agentMozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; BTRS125526)
sleep60s ±0%
watermark987654321
masked watermarkaf74a5baf09794ef3ea590e4aa13ba4681504150bfc6f0d83ef7dfc6fe1df64a
server key md5498bbf3530e70cb07ebebc359f2eb72d
inject stube43a1b63f09794f74d90a9889f7acb77
inject executeCreateThread · SetThreadContext · CreateRemoteThread · RtlCreateUserThread
inject transform x86append · prepend
spawn to x86%windir%\syswow64\rundll32.exe
spawn to x64%windir%\sysnative\rundll32.exe

Hosts sharing a value with this one

168 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. Showing the 40 that rank first. Every host shown is labelled Cobalt Strike, as this one is.

AddressSharesLast confirmedStatus
Cobalt Strike watermark · 168 other hosts · 168 listed

The watermark identifies the Cobalt Strike licence a beacon was built with. Cracked and leaked builds share watermarks widely, so it is not evidence of a single operator.

Of these, 128 are past the 40 hosts shown.

85.175.101.203watermarklisted
119.45.160.160watermarklisted
82.158.89.75watermarklisted
82.158.89.214watermarklisted
46.19.140.50watermarklisted
45.192.248.45watermarklisted
101.200.193.211watermarklisted
43.139.108.161watermarklisted
8.146.227.247watermarklisted
118.89.79.131watermarklisted
101.34.208.175watermarklisted
120.55.93.58watermarklisted
115.190.250.28watermarklisted
154.37.218.73watermarklisted
14.225.212.124watermarklisted
101.35.217.145watermarklisted
106.55.253.229watermarklisted
118.126.95.117watermarklisted
146.190.106.155watermarklisted
175.178.126.48watermarklisted
20.109.163.207watermarklisted
38.76.190.209watermarklisted
43.203.112.69watermarklisted
8.163.98.217watermarklisted
117.72.220.70watermarklisted
124.223.188.23watermarklisted
183.60.226.2watermarklisted
23.238.82.42watermarklisted
38.76.183.197watermarklisted
49.51.230.17watermarklisted
106.13.189.138watermarklisted
111.170.148.141watermarklisted
222.255.215.42watermarklisted
179.43.186.214watermarklisted
165.154.225.239watermarklisted
111.231.116.164watermarklisted
43.108.51.124watermarklisted
45.227.253.132watermarklisted
150.187.25.242watermarklisted
192.255.248.153watermarklisted

Samples served · 1 file

Files this address was seen serving, each identified by running or analysing it. A widely distributed file can reach unrelated hosts.

Every file here was served on :6666.

FileConfirmedFile last seen
9427cf8955781b69f48cf90633b58d5e9d4bffeef25cf812b50a4f5090af42edanalysed

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 and for the 1 file this address served. Queries hold only addresses, ports and file hashes.

Microsoft Defender XDR (KQL)
DeviceNetworkEvents
| where Timestamp > ago(30d)
| where (RemoteIP == "101.42.49.202" and RemotePort in (6666))
DeviceFileEvents
| where Timestamp > ago(30d)
| where SHA256 in ("9427cf8955781b69f48cf90633b58d5e9d4bffeef25cf812b50a4f5090af42ed")
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "101.42.49.202" and DestinationPort in (6666))
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="101.42.49.202" (All_Traffic.dest_port=6666)))
    by All_Traffic.src_ip All_Traffic.dest_ip All_Traffic.dest_port
| tstats summariesonly=false count min(_time) as first_time max(_time) as last_time
    from datamodel=Endpoint.Filesystem where earliest=-30d
    (Filesystem.file_hash="9427cf8955781b69f48cf90633b58d5e9d4bffeef25cf812b50a4f5090af42ed")
    by Filesystem.dest Filesystem.file_path Filesystem.file_hash
Elastic (EQL)
network where
  (destination.ip == "101.42.49.202" and destination.port in (6666))
file where file.hash.sha256 in ("9427cf8955781b69f48cf90633b58d5e9d4bffeef25cf812b50a4f5090af42ed")

Cite this record

Plain text, for a ticket or a report
Address 101.42.49.202 Family Cobalt Strike (command-and-control server) Ports :6666 Status listed (feed checked 2026-11-01 09:37 UTC) First seen 2026-11-01 Last confirmed 2026-11-01 Record https://publicmosaic.com/ip/101.42.49.202 Source Public Mosaic, TLP:CLEAR