Public Mosaic C2 indicators
confirmed host

45.192.248.45

Cobalt Strikecommand-and-control server · :4431, :443

On AS61112. Its certificate is shared with 145 other hosts.

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
TLS certificate87f2085c32b6a2cc709b365f55873e207a9caa10bffecf2fd16d3cf9d94d390c145 other hosts · 143 listed
JA4X template2166164053c1_2166164053c1_30d204a01551420 other hosts · 417 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: 2 server keys.

Network context

SharedValueOther hosts
NetworkAS61112 · AKILE4 other hosts · 4 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 · 2 beacon configurations · 3 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
:4431listed87f2085c32b62166164053c1_2166164053c1_30d204a01551beacon 1
:443 · HTTPSlisted87f2085c32b62166164053c1_2166164053c1_30d204a01551beacon 2

Observation history

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

  1. listed
  2. :4431
  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 87f2085c32b6

On both listeners.

tls certificate87f2085c32b6a2cc709b365f55873e207a9caa10bffecf2fd16d3cf9d94d390c
cert validity2015-05-20 → 2025-05-17
cert typeself-signed
cert key2048-bit
cert serial (hex)08bb00ee
cert serial (decimal)146473198

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

Beacon configurations

2 configurations on 2 listeners. Common to both:

beacon typeHTTPS
postPOST /submit.php
sleep60s ±0%
watermark987654321
spawn to x86%windir%\syswow64\rundll32.exe
spawn to x64%windir%\sysnative\rundll32.exe

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

Configurationcallbackcs versiongetuser-agentserver key md5inject stub
Beacon 1 · :4431192.168.7.46 · set in the beacon by its builder; may be a redirector or a borrowed nameCobalt Strike 4.9 (Sep 19, 2023)GET /cxMozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; MANM; MANM)4d47ae93909c0b17aa2d8f8f6e76fb050b34150c342e35d2ffacb2227620d91c
Beacon 2 · :44345.192.248.45 · same as this hostCobalt Strike 4.8 (Feb 28, 2023)GET /dpixelMozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; MALC)5f79875ef566890e34577be7a6aae581e43a1b63f09794f74d90a9889f7acb77

Listeners

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

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
networkAS61112 · AKILE
confidence100 / 100

45.192.248.45:4431 · Cobalt Strike

listed · beacon 1

45.192.248.45:443 · Cobalt Strike

listed · beacon 2

earlier labelSliver

Hosts sharing a value with this one

484 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
TLS certificate · 145 other hosts · 143 listed

These hosts presented the same certificate. Leaked or resold profiles reuse certificates, so this is not evidence of a single operator.

Of these, 105 are past the 40 hosts shown.

8.163.59.20certificate · JA4X templatelisted
117.72.182.5certificate · JA4X templatelisted
192.252.185.78certificate · JA4X templatelisted
119.45.160.160certificate · JA4X template · watermarklisted
49.232.42.116certificate · JA4X templatelisted
113.250.188.15certificate · JA4X templatelisted
47.105.36.109certificate · JA4X templatelisted
101.42.255.92certificate · JA4X templatelisted
111.231.116.164certificate · JA4X template · watermarklisted
117.72.181.104certificate · JA4X templatelisted
60.247.206.23certificate · JA4X templatelisted
222.255.215.42certificate · JA4X template · watermarklisted
82.156.219.31certificate · JA4X templatelisted
8.222.166.74certificate · JA4X templatelisted
64.177.112.233certificate · JA4X templatelisted
192.3.251.109certificate · JA4X templatelisted
176.123.5.4certificate · JA4X templatelisted
173.208.167.73certificate · JA4X templatelisted
120.79.64.164certificate · JA4X templatelisted
110.42.225.241certificate · JA4X templatelisted
82.156.186.185certificate · JA4X templatelisted
47.86.184.71certificate · JA4X templatelisted
38.76.183.197certificate · JA4X template · watermarklisted
23.238.82.42certificate · JA4X template · watermarklisted
123.207.214.140certificate · JA4X templatelisted
117.158.148.164certificate · JA4X templatelisted
111.228.5.127certificate · JA4X templatelisted
85.11.182.104certificate · JA4X templatelisted
39.100.64.125certificate · JA4X templatelisted
203.98.68.25certificate · JA4X templatelisted
203.98.68.24certificate · JA4X templatelisted
140.143.193.143certificate · JA4X templatelisted
1.117.74.144certificate · JA4X templatelisted
124.220.22.82certificate · JA4X templatelisted
121.4.38.18certificate · JA4X templatelisted
192.144.171.134certificate · JA4X templatelisted
47.84.50.235certificate · JA4X templatelisted
14.225.212.124certificate · JA4X template · watermarklisted
212.14.244.222certificate · JA4X templatelisted
106.53.61.9certificate · JA4X templatelisted
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, 40 are listed under an earlier value and 380 are past the 40 hosts shown.

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, 6 are listed under an earlier value and 160 are past the 40 hosts shown.

Samples served · 3 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
a761e3d0c675aaf4a34cb7b6d3fae19bbb6ae95df85d09152edef2940c5f2a1fanalysed:443
7dbfd3fe772a0bf89281416c5463c5af322b83c8b1105e72a4d829f441f9f3a4analysed:4431
829fa60320eb82ec6c885a7720dfa52ecca5ce8aa091f31e26537d10f1f71b0eanalysed:443

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

Microsoft Defender XDR (KQL)
DeviceNetworkEvents
| where Timestamp > ago(30d)
| where (RemoteIP == "45.192.248.45" and RemotePort in (443, 4431))
DeviceFileEvents
| where Timestamp > ago(30d)
| where SHA256 in ("7dbfd3fe772a0bf89281416c5463c5af322b83c8b1105e72a4d829f441f9f3a4", "829fa60320eb82ec6c885a7720dfa52ecca5ce8aa091f31e26537d10f1f71b0e", "a761e3d0c675aaf4a34cb7b6d3fae19bbb6ae95df85d09152edef2940c5f2a1f")
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "45.192.248.45" and DestinationPort in (443, 4431))
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="45.192.248.45" (All_Traffic.dest_port=443 OR All_Traffic.dest_port=4431)))
    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="7dbfd3fe772a0bf89281416c5463c5af322b83c8b1105e72a4d829f441f9f3a4" OR Filesystem.file_hash="829fa60320eb82ec6c885a7720dfa52ecca5ce8aa091f31e26537d10f1f71b0e" OR Filesystem.file_hash="a761e3d0c675aaf4a34cb7b6d3fae19bbb6ae95df85d09152edef2940c5f2a1f")
    by Filesystem.dest Filesystem.file_path Filesystem.file_hash
Elastic (EQL)
network where
  (destination.ip == "45.192.248.45" and destination.port in (443, 4431))
file where file.hash.sha256 in ("7dbfd3fe772a0bf89281416c5463c5af322b83c8b1105e72a4d829f441f9f3a4", "829fa60320eb82ec6c885a7720dfa52ecca5ce8aa091f31e26537d10f1f71b0e", "a761e3d0c675aaf4a34cb7b6d3fae19bbb6ae95df85d09152edef2940c5f2a1f")

Cite this record

Plain text, for a ticket or a report
Address 45.192.248.45 Family Cobalt Strike (command-and-control server) Ports :443, :4431 Status listed (feed checked 2026-10-30 18:37 UTC) First seen 2026-09-17 Last confirmed 2026-10-30 Record https://publicmosaic.com/ip/45.192.248.45 Source Public Mosaic, TLP:CLEAR