General

  • Target

    spreadmalware.exe

  • Size

    61KB

  • Sample

    250108-k7ax7awlbr

  • MD5

    3437a2105a9740ad94b06f04378bb5b9

  • SHA1

    80ca4ebff21e3a4962ccdec2853308ba544cdeb9

  • SHA256

    688fae8fd065227f1846cf2759f1946fc86a3d1fa2473c664595d6c32131b028

  • SHA512

    5d30cc5fe4b59a99f8c188c9d9efeb22d4813bd1fed44b4cb6f4bc1d045d51a31591c40f41324fc0afd65e1b4630aa304f5e8d90009ec6f1c690c75313a74076

  • SSDEEP

    1536:lF6AD4dXD7tlo9OlvBu/b2QDAOzJri76tF:qZdnty9ODu/b2Vexi7a

Malware Config

Targets

    • Target

      spreadmalware.exe

    • Size

      61KB

    • MD5

      3437a2105a9740ad94b06f04378bb5b9

    • SHA1

      80ca4ebff21e3a4962ccdec2853308ba544cdeb9

    • SHA256

      688fae8fd065227f1846cf2759f1946fc86a3d1fa2473c664595d6c32131b028

    • SHA512

      5d30cc5fe4b59a99f8c188c9d9efeb22d4813bd1fed44b4cb6f4bc1d045d51a31591c40f41324fc0afd65e1b4630aa304f5e8d90009ec6f1c690c75313a74076

    • SSDEEP

      1536:lF6AD4dXD7tlo9OlvBu/b2QDAOzJri76tF:qZdnty9ODu/b2Vexi7a

    • 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.

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

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

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks