Public Mosaic C2 indicators
confirmed host

106.53.168.218

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

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

SharedValueOther hosts
JA4X template2166164053c1_2166164053c1_30d204a01551420 other hosts · 417 listed
Cobalt Strike watermark66666666689 other hosts · 89 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, 1 certificate.

Network context

SharedValueOther hosts
NetworkAS45090 · Shenzhen Tencent Computer Systems Com…538 other hosts · 493 listed

Hosts near this one, for context only.

Summary

First seen by the scanner2026-09-17
In this archive since2026-09-17
Ports2 · 2 listed
Evidence1 certificate · 1 beacon configuration · 2 files served
Look up elsewhereVirusTotal · Shodan · Censys
About this listingWhat a listing means · Is this your address?

Ports

This address answered on 2 ports. First seen and last confirmed dates are per row, by UTC day.

PortFirst seenLast confirmedStatusTLS certificateJA4XConfiguration
:50050 · Cobalt Strike team-server defaultlisted1a819d5e4f2c2166164053c1_2166164053c1_30d204a01551
:443 · HTTPSlistedbeacon

Observation history

Listed on 44 of the 63 days since this archive began recording, 2026-08-29 UTC.

  1. listed
  2. :50050
  3. :443

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
  • 2026-09-17 – 2026-10-30 (44 days)

Evidence

Each certificate, configuration and file appears once, with the listeners that carried it.

TLS certificate 1a819d5e4f2c

On :50050.

tls certificate1a819d5e4f2c39c578a9a90793baf9894c8f9c71a20f1e59fc8ad82eba2da3a9
cert subjectMajor Cobalt Strike
cert subject orgcobaltstrike
cert issuerMajor Cobalt Strike
cert issuer orgcobaltstrike
cert validity2026-09-16 → 2036-09-13
cert typeself-signed
cert key2048-bit
cert serial (hex)34ba5915
cert serial (decimal)884627733

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

Beacon configuration

On :443.

callback106.53.168.218 · same as this host
beacon port443
beacon typeHTTP
cs versionCobalt Strike 4.9 (Sep 19, 2023)
getGET /cm
postPOST /submit.php
user-agentMozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; Xbox)
sleep60s ±0%
watermark666666666
server key md5798c9caed2eb67f7c94298685de02180
inject stub00000000000000000000000000000000
spawn to x86%windir%\syswow64\rundll32.exe
spawn to x64%windir%\sysnative\rundll32.exe

Listeners

Each listener below shows its status and what sets it apart. Dates are in Ports; certificates, configurations and files in Evidence. Common to both listeners:

serviceip-port · tcp
networkAS45090 · Shenzhen Tencent Computer Systems Com…
confidence100 / 100

106.53.168.218:50050 · Cobalt Strike

listed · certificate 1a819d5e4f2c

106.53.168.218:443 · Cobalt Strike

listed · beacon

jarm28d28d28d00028d00042d42d000000831b6af40378e2dd35eeac4e9311926e

Hosts sharing a value with this one

453 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
JA4X template · 420 other hosts · 417 listed

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

Of these, 380 are past the 40 hosts shown.

38.76.219.253JA4X templatelisted
8.163.59.20JA4X template · watermarklisted
117.72.182.5JA4X template · watermarklisted
192.252.185.78JA4X template · watermarklisted
49.232.42.116JA4X templatelisted
156.239.252.191JA4X templatelisted
47.109.23.77JA4X template · watermarklisted
113.250.188.15JA4X template · watermarklisted
47.105.36.109JA4X templatelisted
85.175.101.203JA4X templatelisted
47.251.177.187JA4X templatelisted
101.42.255.92JA4X template · watermarklisted
8.152.212.104JA4X template · watermarklisted
47.95.201.24JA4X templatelisted
154.12.86.154JA4X template · watermarklisted
111.231.116.164JA4X templatelisted
117.72.181.104JA4X templatelisted
60.247.206.23JA4X templatelisted
47.120.32.72JA4X template · watermarklisted
117.72.242.9JA4X templatelisted
43.108.51.124JA4X templatelisted
222.255.215.42JA4X templatelisted
116.198.233.179JA4X templatelisted
82.156.219.31JA4X templatelisted
179.43.186.214JA4X templatelisted
92.222.50.154JA4X templatelisted
85.121.5.211JA4X templatelisted
8.222.166.74JA4X templatelisted
64.177.112.233JA4X templatelisted
64.118.154.116JA4X templatelisted
54.164.24.73JA4X templatelisted
51.159.194.10JA4X templatelisted
47.97.206.32JA4X templatelisted
45.154.12.150JA4X templatelisted
43.138.225.166JA4X templatelisted
43.136.19.18JA4X templatelisted
43.108.84.25JA4X templatelisted
37.60.141.43JA4X templatelisted
38.207.160.73JA4X templatelisted
23.155.44.134JA4X templatelisted
Cobalt Strike watermark · 89 other hosts · 89 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, 9 are listed under an earlier value and 80 are past the 40 hosts shown.

Samples served · 2 files

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 :443.

FileConfirmedFile last seen
910aca16040db3021caf9ecf06832d91b15dd8a7243b93d327ccbe7eeac5e2d5analysed
fa05e7274eff56803ba8b3a16650ba0b9eb46d1721b73f1541f0bcf01317a867analysed

Deploy

Suricata rules and hunt queries for this address’s 2 listed listeners.

Suricata rules

Each query searches the last 30 days of your logs for connections to these listeners and for the 2 files this address served. Queries hold only addresses, ports and file hashes.

Microsoft Defender XDR (KQL)
DeviceNetworkEvents
| where Timestamp > ago(30d)
| where (RemoteIP == "106.53.168.218" and RemotePort in (443, 50050))
DeviceFileEvents
| where Timestamp > ago(30d)
| where SHA256 in ("910aca16040db3021caf9ecf06832d91b15dd8a7243b93d327ccbe7eeac5e2d5", "fa05e7274eff56803ba8b3a16650ba0b9eb46d1721b73f1541f0bcf01317a867")
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "106.53.168.218" and DestinationPort in (443, 50050))
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="106.53.168.218" (All_Traffic.dest_port=443 OR All_Traffic.dest_port=50050)))
    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="910aca16040db3021caf9ecf06832d91b15dd8a7243b93d327ccbe7eeac5e2d5" OR Filesystem.file_hash="fa05e7274eff56803ba8b3a16650ba0b9eb46d1721b73f1541f0bcf01317a867")
    by Filesystem.dest Filesystem.file_path Filesystem.file_hash
Elastic (EQL)
network where
  (destination.ip == "106.53.168.218" and destination.port in (443, 50050))
file where file.hash.sha256 in ("910aca16040db3021caf9ecf06832d91b15dd8a7243b93d327ccbe7eeac5e2d5", "fa05e7274eff56803ba8b3a16650ba0b9eb46d1721b73f1541f0bcf01317a867")

Cite this record

Plain text, for a ticket or a report
Address 106.53.168.218 Family Cobalt Strike (command-and-control server) Ports :443, :50050 Status listed (feed checked 2026-10-30 20:07 UTC) First seen 2026-09-17 Last confirmed 2026-10-30 Record https://publicmosaic.com/ip/106.53.168.218 Source Public Mosaic, TLP:CLEAR