Public Mosaic C2 indicators
sample

f9cdfc4e25f22ff3954162874ee3d1d9728a099c1c667ba94aec01bc7a65e105

A VShell sample, identified from its own bytes without running it (an embedded configuration).

f9cdfc4e25f22ff3954162874ee3d1d9728a099c1c667ba94aec01bc7a65e105

TLP:CLEAR

Sample

sha-256f9cdfc4e25f22ff3954162874ee3d1d9728a099c1c667ba94aec01bc7a65e105
familyVShell
identified byfile analysis
first seen2026-09-20 07:03 UTC
last seen2026-10-01 21:06 UTC
VirusTotal →

VShell configuration

Read from the file without running it. Endpoints are where the sample is configured to connect. An endpoint is listed on this site only if the scanner confirmed it separately. A VShell loader’s only configuration is the address and port it calls. The listener key (vkey) and the salt arrive from the listener when the loader connects, so only sandbox runs that reached a live listener show them.

endpoint · tcp139.155.138.221:12345

Pivots: other samples whose configuration carries the same value. A shared value is not evidence of a single operator.

same endpoint → 2 other samples

Every sample’s configuration, as signed-in downloads (free account): JSON · STIX · CSV.

Served by 1 address

A widely distributed file can reach unrelated hosts.