General

  • Target

    a2915812ae39b9faa2a3e2d0b4e94555b0d160d4b468c4a57785cfafff8c5551

  • Size

    1.3MB

  • Sample

    241221-velt4atnbr

  • MD5

    66fe2500cfcdbbc54c1cab06d5bf90be

  • SHA1

    e6fec893d4c341e2a8ecaa8e970ba22d3ba8afbe

  • SHA256

    a2915812ae39b9faa2a3e2d0b4e94555b0d160d4b468c4a57785cfafff8c5551

  • SHA512

    4d0308539d8df123d5fa9af2945ef0109b0b06fe4172f63f34ef316343708a1ba6271e2a71a4098d6510aaaa1b7dcbb245505fde13b8a6c81736da90ab89110a

  • SSDEEP

    24576:U2G/nvxW3Ww0t6TnzGmVBDh4+aknuRRZJND0gFJ4rD/IjC:UbA30GnzV/q+DnsXg

Malware Config

Targets

    • Target

      a2915812ae39b9faa2a3e2d0b4e94555b0d160d4b468c4a57785cfafff8c5551

    • Size

      1.3MB

    • MD5

      66fe2500cfcdbbc54c1cab06d5bf90be

    • SHA1

      e6fec893d4c341e2a8ecaa8e970ba22d3ba8afbe

    • SHA256

      a2915812ae39b9faa2a3e2d0b4e94555b0d160d4b468c4a57785cfafff8c5551

    • SHA512

      4d0308539d8df123d5fa9af2945ef0109b0b06fe4172f63f34ef316343708a1ba6271e2a71a4098d6510aaaa1b7dcbb245505fde13b8a6c81736da90ab89110a

    • SSDEEP

      24576:U2G/nvxW3Ww0t6TnzGmVBDh4+aknuRRZJND0gFJ4rD/IjC:UbA30GnzV/q+DnsXg

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks