Public Mosaic C2 indicators
confirmed host

43.203.112.69

Cobalt Strikecommand-and-control server · :443, :80

On AS16509.

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 templatedc020972a4a8_9fb583da09a2_fb02ba79e16427 other hosts · 27 listed
Cobalt Strike watermark987654321166 other hosts · 166 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
NetworkAS16509 · Amazon.com100 other hosts · 93 listed

Hosts near this one, for context only.

Summary

First seen by the scanner2026-10-27
In this archive since2026-10-27
Ports2 · 2 listed
Evidence1 certificate · 2 beacon configurations · 7 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
:443 · HTTPSlisteda60e4f3bc5d1dc020972a4a8_9fb583da09a2_fb02ba79e164beacon 1
:80listedbeacon 2

Observation history

Listed on 4 of the 63 days since this archive began recording, 2026-08-29 UTC.

  1. listed
  2. :443 and 1 more

2026-08-292026-10-30

  • 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
  • 2026-10-27 – 2026-10-30 (4 days)

Evidence

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

TLS certificate a60e4f3bc5d1

On :443.

tls certificatea60e4f3bc5d1f25f06596b7516d786dc95b501830e4e6b38a20bc0a2a6c496e1
cert subjectCloudFlare Origin Certificate
cert subject orgCloudFlare, Inc.
cert issuer orgCloudFlare, Inc.
cert validity2023-10-16 → 2038-10-12
cert typeissuer-signed
cert key2048-bit
cert serial (hex)5d7abe715ea2fcb212554c70f125d9d8b9818a3e
cert serial (decimal)533673422512866017260230599910206165591087221310
cert names*.huorongsec.com huorongsec.com

The names above are what the certificate asserts, signed by the issuer it names, which may be a public certificate authority, a private one, or one a builder ships. This site verifies none of it, so treat a name here as a lead to investigate, never an attribution.

Beacon configurations

2 configurations on 2 listeners. Common to both:

cs versionCobalt Strike 4.9 (Sep 19, 2023)
getGET /img/get.jpg
postPOST /img/post.jpg
sleep60s ±35%
watermark987654321
server key md54c14350c75591316502f29bbf5772d50
inject stubae5afcfee8026674dc8f3b4f2da46c7f
spawn to x86%windir%\syswow64\mcbuilder.exe
spawn to x64%windir%\sysnative\mcbuilder.exe

Each configuration calls back on its own listener’s port. Where they differ:

Configurationcallbackbeacon typeuser-agent
Beacon 1 · :443img2.huorongsec.com · set in the beacon by its builder; may be a redirector or a borrowed nameHTTPSMozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727)
Beacon 2 · :80img1.huorongsec.com · set in the beacon by its builder; may be a redirector or a borrowed nameHTTPMozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)

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
networkAS16509 · Amazon.com
confidence100 / 100

43.203.112.69:443 · Cobalt Strike

listed · certificate a60e4f3bc5d1 · beacon 1

observed hosthuorongsec.com
jarm2ad2ad16d2ad2ad00042d42d00042ddb04deffa1705e2edc44cae1ed24a4da

43.203.112.69:80 · Cobalt Strike

listed · beacon 2

Hosts sharing a value with this one

184 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.

AddressFamilySharesLast confirmedStatus
JA4X template · 27 other hosts · 27 listed

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

154.205.145.109HavocJA4X templatelisted
41.216.189.153HavocJA4X templatelisted
111.229.4.108Cobalt StrikeJA4X templatelisted
165.154.225.239Cobalt StrikeJA4X template · watermarklisted
82.158.89.75Cobalt StrikeJA4X template · watermarklisted
82.158.89.214Cobalt StrikeJA4X template · watermarklisted
41.216.189.62AdaptixJA4X templatelisted
177.3.92.247VShellJA4X templatelisted
216.238.54.156BTMOBJA4X templatelisted
124.220.216.115AdaptixJA4X templatelisted
101.33.202.134AdaptixJA4X templatelisted
151.236.21.109HavocJA4X templatelisted
193.239.85.15HavocJA4X templatelisted
45.87.53.6Cobalt StrikeJA4X template · watermarklisted
210.2.169.213HavocJA4X templatelisted
87.232.84.18AdaptixJA4X templatelisted
31.56.209.245Chaos RATJA4X templatelisted
144.172.68.200Cobalt StrikeJA4X templatelisted
47.83.3.103Cobalt StrikeJA4X templatelisted
167.172.142.69HavocJA4X templatelisted
23.148.212.86Cobalt StrikeJA4X template · watermarklisted
23.148.212.123Cobalt StrikeJA4X template · watermarklisted
154.94.224.35Cobalt StrikeJA4X template · watermarklisted
155.117.155.141AdaptixJA4X templatelisted
43.155.169.245Cobalt StrikeJA4X template · watermarklisted
107.172.217.220Cobalt StrikeJA4X templatelisted
154.12.90.231Cobalt StrikeJA4X template · watermarklisted
Cobalt Strike watermark · 166 other hosts · 166 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 144 are past the 40 hosts shown.

101.200.193.211Cobalt Strikewatermarklisted
119.45.160.160Cobalt Strikewatermarklisted
85.175.101.203Cobalt Strikewatermarklisted
111.231.116.164Cobalt Strikewatermarklisted
43.108.51.124Cobalt Strikewatermarklisted
222.255.215.42Cobalt Strikewatermarklisted
179.43.186.214Cobalt Strikewatermarklisted
111.170.148.141Cobalt Strikewatermarklisted
106.13.189.138Cobalt Strikewatermarklisted
49.51.230.17Cobalt Strikewatermarklisted
38.76.183.197Cobalt Strikewatermarklisted
23.238.82.42Cobalt Strikewatermarklisted
183.60.226.2Cobalt Strikewatermarklisted

Samples served · 7 files

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

FileConfirmedDelivered onFile last seen
5c9188250941acbee2b57b88e638031eb57fe79275b5314ff6c690b33d549e53analysed:443
68d294e666819b36d66dbb1ee2a6cffb9d625ddaa8edb206ce87b6ee1984a032analysed:80
509cda510ed5045539c2f5b006f860a2141809149aeeea3addcd7c6bba32b3f9analysed:443
a0e733526c29f0b85d8930c94998b220595c71872024f2aff5f7c84f29f6f5b2analysed:443
df5f0f2b03d363aa72d02ff8f055dd3e07ea17b28c4e22214e8f22f1960c4dacanalysed:80
3bef414366684c248a6fc7b4bad560a8e86c02f3da93c646fd280b1fe1f3b683analysed:443
59572b54aa2806e860ff26112a96bae9888341e94e474aede81249bb2c0c3d88analysed:80

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 7 files this address served. Queries hold only addresses, ports and file hashes.

Microsoft Defender XDR (KQL)
DeviceNetworkEvents
| where Timestamp > ago(30d)
| where (RemoteIP == "43.203.112.69" and RemotePort in (80, 443))
DeviceFileEvents
| where Timestamp > ago(30d)
| where SHA256 in ("3bef414366684c248a6fc7b4bad560a8e86c02f3da93c646fd280b1fe1f3b683", "509cda510ed5045539c2f5b006f860a2141809149aeeea3addcd7c6bba32b3f9", "59572b54aa2806e860ff26112a96bae9888341e94e474aede81249bb2c0c3d88", "5c9188250941acbee2b57b88e638031eb57fe79275b5314ff6c690b33d549e53", "68d294e666819b36d66dbb1ee2a6cffb9d625ddaa8edb206ce87b6ee1984a032", "a0e733526c29f0b85d8930c94998b220595c71872024f2aff5f7c84f29f6f5b2", "df5f0f2b03d363aa72d02ff8f055dd3e07ea17b28c4e22214e8f22f1960c4dac")
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "43.203.112.69" and DestinationPort in (80, 443))
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="43.203.112.69" (All_Traffic.dest_port=80 OR All_Traffic.dest_port=443)))
    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="3bef414366684c248a6fc7b4bad560a8e86c02f3da93c646fd280b1fe1f3b683" OR Filesystem.file_hash="509cda510ed5045539c2f5b006f860a2141809149aeeea3addcd7c6bba32b3f9" OR Filesystem.file_hash="59572b54aa2806e860ff26112a96bae9888341e94e474aede81249bb2c0c3d88" OR Filesystem.file_hash="5c9188250941acbee2b57b88e638031eb57fe79275b5314ff6c690b33d549e53" OR Filesystem.file_hash="68d294e666819b36d66dbb1ee2a6cffb9d625ddaa8edb206ce87b6ee1984a032" OR Filesystem.file_hash="a0e733526c29f0b85d8930c94998b220595c71872024f2aff5f7c84f29f6f5b2" OR Filesystem.file_hash="df5f0f2b03d363aa72d02ff8f055dd3e07ea17b28c4e22214e8f22f1960c4dac")
    by Filesystem.dest Filesystem.file_path Filesystem.file_hash
Elastic (EQL)
network where
  (destination.ip == "43.203.112.69" and destination.port in (80, 443))
file where file.hash.sha256 in ("3bef414366684c248a6fc7b4bad560a8e86c02f3da93c646fd280b1fe1f3b683", "509cda510ed5045539c2f5b006f860a2141809149aeeea3addcd7c6bba32b3f9", "59572b54aa2806e860ff26112a96bae9888341e94e474aede81249bb2c0c3d88", "5c9188250941acbee2b57b88e638031eb57fe79275b5314ff6c690b33d549e53", "68d294e666819b36d66dbb1ee2a6cffb9d625ddaa8edb206ce87b6ee1984a032", "a0e733526c29f0b85d8930c94998b220595c71872024f2aff5f7c84f29f6f5b2", "df5f0f2b03d363aa72d02ff8f055dd3e07ea17b28c4e22214e8f22f1960c4dac")

Cite this record

Plain text, for a ticket or a report
Address 43.203.112.69 Family Cobalt Strike (command-and-control server) Ports :80, :443 Status listed (feed checked 2026-10-30 17:37 UTC) First seen 2026-10-27 Last confirmed 2026-10-30 Record https://publicmosaic.com/ip/43.203.112.69 Source Public Mosaic, TLP:CLEAR