Public Mosaic C2 indicators
confirmed host

82.158.89.75

Cobalt Strikecommand-and-control server · :2053

On AS402506. Its certificate is shared with 1 other host.

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
Cobalt Strike server key9e72a27fe25e89c9f82ec7de8e043a5d1 other host · 1 listed
TLS certificateab98cb64960c77bcc8734dc53aad62d8482664b32e2d1adab74dd5004c5bc42a1 other host · 1 listed
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.

Network context

SharedValueOther hosts
/2482.158.89.0/242 other hosts · 2 listed
NetworkAS402506 · Zenixcloud8 other hosts · 7 listed

Hosts near this one, for context only.

Summary

First seen by the scanner2026-09-25
In this archive since2026-09-25
Evidence1 certificate · 1 beacon configuration · 2 files served
Look up elsewhereVirusTotal · Shodan · Censys
About this listingWhat a listing means · Is this your address?

Observation history

Listed on 36 of the 63 days since this archive began recording, 2026-08-29 UTC.

  1. listed
  2. :2053

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
  • 2026-09-25 – 2026-10-30 (36 days)

82.158.89.75:2053 · Cobalt Strike

Last confirmed (today)

first seen2026-09-25 06:29 UTC
serviceip-port · tcp
observed hostuploadimgae.cfd
networkAS402506 · Zenixcloud
confidence100 / 100
tls certificateab98cb64960c77bcc8734dc53aad62d8482664b32e2d1adab74dd5004c5bc42a
cert subjectCloudFlare Origin Certificate
cert subject orgCloudFlare, Inc.
cert issuer orgCloudFlare, Inc.
cert validity2026-02-10 → 2041-02-06
cert typeissuer-signed
cert key2048-bit
cert serial (hex)395ea79c44cdea8376d5091f3fc9339a2376bdfb
cert serial (decimal)327523344912877256153071083346824887512218385915
cert names*.uploadimgae.cfd uploadimgae.cfd

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.

ja4xdc020972a4a8_9fb583da09a2_fb02ba79e164
jarm2ad2ad16d2ad2ad00042d42d00042ddb04deffa1705e2edc44cae1ed24a4da
cs watermark987654321

Beacon configuration

callbackapi.imageprovidjs.shop · 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 /jquery-3.3.1.min.js
postPOST /jquery-3.3.2.min.js
user-agentMozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36
sleep10s ±37%
watermark987654321
server key md59e72a27fe25e89c9f82ec7de8e043a5d
inject stubae5afcfee8026674dc8f3b4f2da46c7f
spawn to x86%windir%\syswow64\dllhost.exe
spawn to x64%windir%\sysnative\dllhost.exe

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
Cobalt Strike server key · 1 other host · 1 listed

Every beacon carries its team server’s public key. Hosts sharing one were set up from the same server installation, or from a leaked or cracked copy that ships its key file, so it is not evidence of a single operator.

23.148.212.123Cobalt Strikeserver key · certificate · JA4X template · watermarklisted
TLS certificate · 1 other host · 1 listed

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

Of these, 1 is listed under an earlier value.

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.

Of these, 1 is listed under an earlier value.

154.205.145.109HavocJA4X templatelisted
41.216.189.153HavocJA4X templatelisted
111.229.4.108Cobalt StrikeJA4X templatelisted
165.154.225.239Cobalt StrikeJA4X template · watermarklisted
82.158.89.214Cobalt StrikeJA4X template · watermarklisted
43.203.112.69Cobalt 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
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 · 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 :2053.

FileConfirmedFile last seen
65b4852f4f08a2af64e88b33e8f4cb82ce5664e51f6210fffcd720f04fcdf6a1analysed
d016249d2f667051e40b6910d5f0c27c03ec8c771f193b3566bac770aafa17edanalysed

Neighbourhood · 82.158.89.0/24 · 2 other hosts

2 other hosts in this archive are in the same /24, shown for context.

82.158.89.122VShell82.158.89.214Cobalt 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 2 files this address served. Queries hold only addresses, ports and file hashes.

Microsoft Defender XDR (KQL)
DeviceNetworkEvents
| where Timestamp > ago(30d)
| where (RemoteIP == "82.158.89.75" and RemotePort in (2053))
DeviceFileEvents
| where Timestamp > ago(30d)
| where SHA256 in ("65b4852f4f08a2af64e88b33e8f4cb82ce5664e51f6210fffcd720f04fcdf6a1", "d016249d2f667051e40b6910d5f0c27c03ec8c771f193b3566bac770aafa17ed")
Microsoft Sentinel (KQL)
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where (DestinationIP == "82.158.89.75" and DestinationPort in (2053))
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="82.158.89.75" (All_Traffic.dest_port=2053)))
    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="65b4852f4f08a2af64e88b33e8f4cb82ce5664e51f6210fffcd720f04fcdf6a1" OR Filesystem.file_hash="d016249d2f667051e40b6910d5f0c27c03ec8c771f193b3566bac770aafa17ed")
    by Filesystem.dest Filesystem.file_path Filesystem.file_hash
Elastic (EQL)
network where
  (destination.ip == "82.158.89.75" and destination.port in (2053))
file where file.hash.sha256 in ("65b4852f4f08a2af64e88b33e8f4cb82ce5664e51f6210fffcd720f04fcdf6a1", "d016249d2f667051e40b6910d5f0c27c03ec8c771f193b3566bac770aafa17ed")

Cite this record

Plain text, for a ticket or a report
Address 82.158.89.75 Family Cobalt Strike (command-and-control server) Ports :2053 Status listed (feed checked 2026-10-30 18:37 UTC) First seen 2026-09-25 Last confirmed 2026-10-30 Record https://publicmosaic.com/ip/82.158.89.75 Source Public Mosaic, TLP:CLEAR