Public Mosaic C2 indicators
sample

a63f8ea8b6375049e5cd2696144f6584339b7c6f7bc5f16d09ee5a03c96ecbc5

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

a63f8ea8b6375049e5cd2696144f6584339b7c6f7bc5f16d09ee5a03c96ecbc5

TLP:CLEAR

Sample

sha-256a63f8ea8b6375049e5cd2696144f6584339b7c6f7bc5f16d09ee5a03c96ecbc5
familyVShell
identified byfile analysis
first seen2026-09-04 21:23 UTC
last seen2026-10-05 21:11 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 · tcp8.149.139.253:8083

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.