public mosaic llc support@publicmosaic.com
confirmed host

IP address 118.89.88.183

vShellCobalt Strikecontrollers · :58086, :56781

Last confirmed 2026-09-15, first seen 2026-09-02. On AS45090.

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

This address answered on 2 ports — :58086, :56781, across 2 malware families.

118.89.88.183:58086 · vShell

Last confirmed (today)

first seen2026-09-08 02:20 UTC
serviceip-port · tcp
networkAS45090 · Shenzhen Tencent Computer Systems Com…
confidence100 / 100

vShell configuration

Operator-supplied settings recovered by detonating a captured sample in a sandbox — the configured command-and-control host, mutex and campaign, not a live reading of this address.

c2 host118.89.88.183 · same as this host

118.89.88.183:56781 · Cobalt Strike

Last confirmed (today)

first seen2026-09-02 10:51 UTC
serviceip-port · tcp
networkAS45090 · Shenzhen Tencent Computer Systems Com…
confidence100 / 100
cs watermark987654321

Beacon configuration

callback118.89.88.183 · same as this host
beacon typeHTTP
cs versionCobalt Strike 4.8 (Feb 28, 2023)
getGET /module/freshnews/getinfo/getinfo7.jsp
postPOST /jubac/sync/detailcollect.do
user-agentMozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36
sleep5s ±0%
watermark987654321
server key md5884ea5ad44f4609a44fe1c04325128f2
inject stube43a1b63f09794f74d90a9889f7acb77
spawn to x86%windir%\syswow64\rundll32.exe
spawn to x64%windir%\sysnative\rundll32.exe

Observation history

18d agotoday

Observed on 14 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 · 108 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 108. The rest are reachable from any of them.

Samples served · 3 files

Files this address was observed DELIVERING, confirmed as malware by detonation or by analysis of the file itself. Delivery is an observation, not an attribution — a widely distributed sample can reach unrelated hosts.

Pivots & lookups