Public Mosaic C2 indicators
sample

3c3c6053a3704ffe6ab46b7a6ff9d6859af29fb10a32d929e8a35cdf9e2ebb4a

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

3c3c6053a3704ffe6ab46b7a6ff9d6859af29fb10a32d929e8a35cdf9e2ebb4a

TLP:CLEAR

Sample

sha-2563c3c6053a3704ffe6ab46b7a6ff9d6859af29fb10a32d929e8a35cdf9e2ebb4a
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.