Public Mosaic C2 indicators
confirmed host

38.190.224.38

Cobalt Strikecommand-and-control server · :443

On AS133199.

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
Issuance cohort2166164053c1_2166164053c1_30d204a01551_5aacc2522268_06e45b4dfbdd2 other hosts · 2 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: 1 server key, 1 certificate.

Network context

SharedValueOther hosts
/2438.190.224.0/241 other host · 1 listed
NetworkAS133199 · SonderCloud24 other hosts · 24 listed

Hosts near this one, for context only.

Summary

First seen by the scanner2026-10-24
In this archive since2026-10-24
Evidence1 certificate · 1 beacon configuration · 1 file served
Look up elsewhereVirusTotal · Shodan · Censys
About this listingWhat a listing means · Is this your address?

Observation history

Listed on 7 of the 63 days since this archive began recording, 2026-08-29 UTC.

  1. listed
  2. :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
  • 2026-10-24 – 2026-10-30 (7 days)

38.190.224.38:443 · Cobalt Strike

Last confirmed (6 days ago)

first seen2026-10-24 06:16 UTC
serviceip-port · tcp · HTTPS
networkAS133199 · SonderCloud
confidence100 / 100
tls certificate9b118293ec8a2f4fd5f7caed99ecbb7bf3cc7ca32359759f69df54ebe0675033
cert subjectPwn3rs Striked
cert subject orgPwn3rs
cert issuerPwn3rs Striked
cert issuer orgPwn3rs
cert validity2026-10-22 → 2027-01-20
cert typeself-signed
cert key2048-bit
cert serial (hex)ef27db12fb192f0d
cert serial (decimal)17232983373725118221

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

ja4x2166164053c1_2166164053c1_30d204a01551
cohortshared issuance template · 3 hosts
cs watermark987654321

Beacon configuration

callback38.190.224.38 · same as this host
beacon typeHTTPS
cs versionCobalt Strike 4.9 (Sep 19, 2023)
getGET /Content
postPOST /fam_newspaper
user-agentMozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246
sleep10s ±50%
watermark987654321
server key md533ad00baa0e1c23b89a40351e755945a
inject stubae5afcfee8026674dc8f3b4f2da46c7f
spawn to x86%windir%\Microsoft.NET\Framework\v2.0.50727\csc.exe -Embedding
spawn to x64C:\Program Files\WinRAR\WinRAR.exe

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
Issuance cohort · 2 other hosts · 2 listed

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

20.109.163.207issuance cohort · JA4X template · watermarklisted
149.104.31.151issuance cohort · JA4X template · watermarklisted
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, 2 are listed under an earlier value and 380 are past the 40 hosts shown.

38.76.219.253JA4X templatelisted
101.200.193.211JA4X template · watermarklisted
8.163.59.20JA4X templatelisted
117.72.182.5JA4X templatelisted
192.252.185.78JA4X templatelisted
119.45.160.160JA4X template · watermarklisted
49.232.42.116JA4X templatelisted
156.239.252.191JA4X templatelisted
47.109.23.77JA4X templatelisted
113.250.188.15JA4X templatelisted
47.105.36.109JA4X templatelisted
85.175.101.203JA4X template · watermarklisted
47.251.177.187JA4X templatelisted
101.42.255.92JA4X templatelisted
8.152.212.104JA4X templatelisted
47.95.201.24JA4X templatelisted
154.12.86.154JA4X templatelisted
111.231.116.164JA4X template · watermarklisted
117.72.181.104JA4X templatelisted
60.247.206.23JA4X templatelisted
47.120.32.72JA4X templatelisted
117.72.242.9JA4X template · watermarklisted
43.108.51.124JA4X template · watermarklisted
222.255.215.42JA4X template · watermarklisted
116.198.233.179JA4X template · watermarklisted
82.156.219.31JA4X templatelisted
179.43.186.214JA4X template · watermarklisted
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
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, 11 are listed under an earlier value and 155 are past the 40 hosts shown.

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 :443.

FileConfirmedFile last seen
7c1718020448f2cc78e4aff06473660acba8d61dd0c64c59e9d577f4c4d35972analysed

Neighbourhood · 38.190.224.0/24 · 1 other host

1 other host in this archive is in the same /24, shown for context.

38.190.224.2Cobalt Strike

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 == "38.190.224.38" and RemotePort in (443))
DeviceFileEvents
| where Timestamp > ago(30d)
| where SHA256 in ("7c1718020448f2cc78e4aff06473660acba8d61dd0c64c59e9d577f4c4d35972")
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "38.190.224.38" and DestinationPort in (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="38.190.224.38" (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="7c1718020448f2cc78e4aff06473660acba8d61dd0c64c59e9d577f4c4d35972")
    by Filesystem.dest Filesystem.file_path Filesystem.file_hash
Elastic (EQL)
network where
  (destination.ip == "38.190.224.38" and destination.port in (443))
file where file.hash.sha256 in ("7c1718020448f2cc78e4aff06473660acba8d61dd0c64c59e9d577f4c4d35972")

Cite this record

Plain text, for a ticket or a report
Address 38.190.224.38 Family Cobalt Strike (command-and-control server) Ports :443 Status listed (feed checked 2026-10-30 18:37 UTC) First seen 2026-10-24 Last confirmed 2026-10-24 Record https://publicmosaic.com/ip/38.190.224.38 Source Public Mosaic, TLP:CLEAR