Public Mosaic C2 indicators
confirmed host

154.12.86.154

Cobalt Strikecommand-and-control server · :8000

On AS401696.

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
NetworkAS401696 · cognetcloud39 other hosts · 39 listed

Hosts near this one, for context only.

Summary

First seen by the scanner2026-10-23
In this archive since2026-10-23
Evidence1 certificate · 1 beacon configuration · 4 files served
Look up elsewhereVirusTotal · Shodan · Censys
About this listingWhat a listing means · Is this your address?

Observation history

Listed on 8 of the 63 days since this archive began recording, 2026-08-29 UTC.

  1. listed
  2. :8000

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
  • 2026-10-23 – 2026-10-30 (8 days)

154.12.86.154:8000 · Cobalt Strike

Last confirmed (today)

first seen2026-10-23 06:28 UTC
serviceip-port · tcp
networkAS401696 · cognetcloud
confidence100 / 100
tls certificate9372728b6d3e779b5f99a37c76c40a9bdb6648afbcc7453bfbb24d55abf08468
cert subjectGoogle Spider
cert subject orgAlphabet Inc
cert issuerGoogle Spider
cert issuer orgAlphabet Inc
cert validity2025-02-14 → 2025-05-15
cert typeself-signed
cert key2048-bit
cert serial (hex)2f50d857
cert serial (decimal)793827415

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
jarm2ad2ad16d2ad2ad00042d42d00042ddb04deffa1705e2edc44cae1ed24a4da
cs watermark666666666

Beacon configuration

callbackjnceabyk.yuncdn.site · set in the beacon by its builder; may be a redirector or a borrowed name
beacon typeHTTPS
cs versionCobalt Strike 4.9 (Sep 19, 2023)
getGET /api/v1/get
postPOST /api/v1/post
user-agentMozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
sleep15s ±45%
watermark666666666
server key md511ad67bb38f26849c9a28bd924c0616a
inject stube781a4479f7c5a03b2dcfe4bd436366f
spawn to x86%windir%\syswow64\dllhost.exe
spawn to x64%windir%\syswow64\dllhost.exe

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
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
212.83.61.209JA4X 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, 8 are listed under an earlier value and 81 are past the 40 hosts shown.

Samples served · 4 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 :8000.

FileConfirmedFile last seen
f1a125f8283b3f9bbfe702e88fcf39523991ddbf637a682aa29aaf7dea09c4e8analysed
3cd4bc23f20e51ecd57082c60eacd45b14d1abc0ca4a87f8d977af017d380894analysed
41aa964316897505cf821555e593212a6ad2af181afc4ccf537f53b929574057analysed
776c8e99073a409654d838e6a2cff0705107705c6e9c34ebf13515a89a23ca1danalysed

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

Microsoft Defender XDR (KQL)
DeviceNetworkEvents
| where Timestamp > ago(30d)
| where (RemoteIP == "154.12.86.154" and RemotePort in (8000))
DeviceFileEvents
| where Timestamp > ago(30d)
| where SHA256 in ("3cd4bc23f20e51ecd57082c60eacd45b14d1abc0ca4a87f8d977af017d380894", "41aa964316897505cf821555e593212a6ad2af181afc4ccf537f53b929574057", "776c8e99073a409654d838e6a2cff0705107705c6e9c34ebf13515a89a23ca1d", "f1a125f8283b3f9bbfe702e88fcf39523991ddbf637a682aa29aaf7dea09c4e8")
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "154.12.86.154" and DestinationPort in (8000))
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="154.12.86.154" (All_Traffic.dest_port=8000)))
    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="3cd4bc23f20e51ecd57082c60eacd45b14d1abc0ca4a87f8d977af017d380894" OR Filesystem.file_hash="41aa964316897505cf821555e593212a6ad2af181afc4ccf537f53b929574057" OR Filesystem.file_hash="776c8e99073a409654d838e6a2cff0705107705c6e9c34ebf13515a89a23ca1d" OR Filesystem.file_hash="f1a125f8283b3f9bbfe702e88fcf39523991ddbf637a682aa29aaf7dea09c4e8")
    by Filesystem.dest Filesystem.file_path Filesystem.file_hash
Elastic (EQL)
network where
  (destination.ip == "154.12.86.154" and destination.port in (8000))
file where file.hash.sha256 in ("3cd4bc23f20e51ecd57082c60eacd45b14d1abc0ca4a87f8d977af017d380894", "41aa964316897505cf821555e593212a6ad2af181afc4ccf537f53b929574057", "776c8e99073a409654d838e6a2cff0705107705c6e9c34ebf13515a89a23ca1d", "f1a125f8283b3f9bbfe702e88fcf39523991ddbf637a682aa29aaf7dea09c4e8")

Cite this record

Plain text, for a ticket or a report
Address 154.12.86.154 Family Cobalt Strike (command-and-control server) Ports :8000 Status listed (feed checked 2026-10-30 18:37 UTC) First seen 2026-10-23 Last confirmed 2026-10-30 Record https://publicmosaic.com/ip/154.12.86.154 Source Public Mosaic, TLP:CLEAR