Public Mosaic C2 indicators
sample

ef1a5bc2d6bb690539991a18fa2b4a7b6d296c34a5753200d71d8868ce93f0c1

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

ef1a5bc2d6bb690539991a18fa2b4a7b6d296c34a5753200d71d8868ce93f0c1

TLP:CLEAR

Sample

sha-256ef1a5bc2d6bb690539991a18fa2b4a7b6d296c34a5753200d71d8868ce93f0c1
familyVShell
identified byfile analysis
first seen2026-09-04 21:27 UTC
last seen2026-10-05 21:03 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 · tcp1.13.19.103:8443

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.