Resubmissions

26/08/2026, 08:55

260826-kvxanabk2x

08/08/2026, 22:51

260808-2s8pcaek9v

08/08/2026, 18:13

260808-wtrvbsbn3v

12/07/2026, 13:15

260712-qhcy5scv9t

29/06/2026, 14:03

260629-rc414sgy5q

24/06/2026, 07:46

260624-jl12taay6y

24/06/2026, 07:45

260624-jlwr4aay6x

16/04/2025, 14:39

250416-r1ar6swnz28

19/03/2025, 15:53

250319-tb5x5aytcs8

05/03/2025, 18:07

250305-wqrp6avwfs8

General

  • Target
    VelocityBootstrapper.zip
  • Size 2.7MB
  • Sample260808-2s8pcaek9v
  • SHA256 1a40c5534bf7e84186081a04b24c0e4f04fc96797fe5b47e2bb6b123961c8eaa
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Costura .NET executable packer 1 IoCs

    Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

  • Unsigned PE 4 IoCs

    Checks for missing Authenticode signature.

  • Inno Setup is an open-source installation builder for Windows applications. 1 IoCs

    Inno Setup installer

File Explorer

  • VelocityBootstrapper.zip
    .zip 2.7MB
  • VelocityBootstrapper/Velocity Bootstrapper.exe
    .exe 1.7MB
  • costura.dll
    .dll 5KB
  • costura.pdb
    7KB
  • microsoft.bcl.asyncinterfaces.dll
    .dll 26KB
  • newtonsoft.json.dll
    .dll 695KB
  • sharpcompress.dll
    .dll 588KB
  • sharpcompress.pdb
    279KB
  • system.buffers.dll
    .dll 20KB
  • system.memory.dll
    .dll 138KB
  • system.numerics.vectors.dll
    .dll 113KB
  • system.runtime.compilerservices.unsafe.dll
    .dll 17KB
  • system.text.encoding.codepages.dll
    .dll 748KB
  • system.threading.tasks.extensions.dll
    .dll 25KB
  • zstdsharp.dll
    .dll 431KB
  • VelocityBootstrapper/Velocity Bootstrapper.exe.config
    563B
  • VelocityBootstrapper/certx.exe
    .exe 1.7MB
  • VelocityBootstrapper/servicehelper.bat
    .bat 1KB

VelocityBootstrapper.zip

  • SHA256 1a40c5534bf7e84186081a04b24c0e4f04fc96797fe5b47e2bb6b123961c8eaa
  • MD5 SHA1 SHA512 SSDEEP TLSH