General

  • Target

    e7117bbae81246c116e602a00840d7001920212c3656f0ce00a1b8f289836b83N.exe

  • Size

    1.5MB

  • Sample

    250208-cx5e2sznc1

  • MD5

    49f66cd5f78612fa22b446077db7b820

  • SHA1

    201e00f7d4d27f684de80e6cd0f56fd149dec94a

  • SHA256

    e7117bbae81246c116e602a00840d7001920212c3656f0ce00a1b8f289836b83

  • SHA512

    e15c0b16cd353f9e2cbdc9205f70571853738f83ce7da6f3b079dfc72fb83a8eb2cbaa1a6b089103f1f11e5b0155371595e4d3e3e1e06f460d15d61dd4bb1a31

  • SSDEEP

    24576:0NNUtQhWhtqDfDXQdy+N+gfQqRsgFlDRluQ70eJiVbWpR:EzhWhCXQFN+0IEuQgyiVK

Malware Config

Targets

    • Target

      e7117bbae81246c116e602a00840d7001920212c3656f0ce00a1b8f289836b83N.exe

    • Size

      1.5MB

    • MD5

      49f66cd5f78612fa22b446077db7b820

    • SHA1

      201e00f7d4d27f684de80e6cd0f56fd149dec94a

    • SHA256

      e7117bbae81246c116e602a00840d7001920212c3656f0ce00a1b8f289836b83

    • SHA512

      e15c0b16cd353f9e2cbdc9205f70571853738f83ce7da6f3b079dfc72fb83a8eb2cbaa1a6b089103f1f11e5b0155371595e4d3e3e1e06f460d15d61dd4bb1a31

    • SSDEEP

      24576:0NNUtQhWhtqDfDXQdy+N+gfQqRsgFlDRluQ70eJiVbWpR:EzhWhCXQFN+0IEuQgyiVK

    • DcRat

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

    • Dcrat family

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

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

    • 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

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks