public mosaic llc support@publicmosaic.com
confirmed host

IP address 152.32.132.177

Cobalt Strikecommand-and-control server · :8899

Last confirmed 2026-09-15, first seen 2026-08-29. On AS135377.

listed last confirmed feed checked TLP:CLEAR SURICATA .RULES SEE THE LIVE FEED →

152.32.132.177:8899 · Cobalt Strike

Last confirmed (today)

first seen2026-08-29 00:42 UTC
serviceip-port · tcp
networkAS135377 · UCLOUD INFORMATION TECHNOLOGY (HK)
confidence98 / 100
cs watermark666666666

Beacon configuration

callback152.32.132.177 · same as this host
beacon typeHTTP
cs versionCobalt Strike 4.9 (Sep 19, 2023)
getGET /activity
postPOST /submit.php
user-agentMozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP02)
sleep60s ±0%
watermark666666666
server key md5edf1eaed72527fe3dc8619c3b3fef14e
inject stub40ed048138df0b3e23a0ef24dc5efa1a
spawn to x86%windir%\syswow64\rundll32.exe
spawn to x64%windir%\sysnative\rundll32.exe

Observation history

18d agotoday

Observed on 18 of the 18 days since this archive began recording, 2026-08-29 UTC. Presence is per UTC day: a day is marked when the scanner confirmed this address at least once, not once per scan.

Shared Cobalt Strike watermark · 56 hosts

A watermark identifies the Cobalt Strike licence a beacon was generated from. Hosts sharing one were built from the same copy of the software — which is not the same as one operator, since cracked and leaked builds circulate widely and share a watermark by definition.

Showing 24 of 56. The rest are reachable from any of them.

Neighbourhood · 152.32.132.0/24 · 1 host

1 other confirmed host in the same /24. Adjacent addresses under one operator are a different signal from a shared certificate — they suggest a block, not a build.

Pivots & lookups