Static

static

4

Resubmissions

09/08/2026, 17:13

260809-vrv9asselb

09/08/2026, 17:11

260809-vqbs9saq214

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General

  • Target
    AntarctidaBuilder.exe
  • Size 3.9MB
  • Sample260809-vrv9asselb
  • SHA256 f896102bf4a5c6cd265be315eec0c5ed82d68772059f4e733185601d0fe233fb
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
4/10
costurapacker

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.

    costurapacker
  • Unsigned PE 6 IoCs

    Checks for missing Authenticode signature.

File Explorer

  • AntarctidaBuilder.exe
    .exe 3.9MB
  • costura.dll
    .dll 5KB
  • costura.pdb
    7KB
  • dnlib.dll
    .dll 1.1MB
  • materialskin.dll
    .dll 6.4MB
  • obfuscator.dll
    .dll 69KB
  • rjcodeadvance.rjcontrols.dll
    .dll 39KB

AntarctidaBuilder.exe

  • IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
  • SHA256 f896102bf4a5c6cd265be315eec0c5ed82d68772059f4e733185601d0fe233fb
  • MD5 SHA1 SHA512 SSDEEP TLSH
windows:4windowsx86arch:x86

  • Costura .NET executable packer

    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.

    costurapacker

  • Unsigned PE

    Checks for missing Authenticode signature.

Minor OS version
0
Major OS version
4
Entry point
4074990
Magic Number
267
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_GUI
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_32BIT_MACHINE
PDB paths
C:\Users\NotBabka\Desktop\Antarctida Stealer\AntarctidaBuilder\AntarctidaBuilder\obj\Release\AntarctidaBuilder.pdb