General

  • Target
    a230b93fca18aaa16370ce5969ca90ad.exe
  • Size 828KB
  • Sample240611-txh1gstdnj
  • SHA256 79b24566d743b542e79e4db241fe21c380a7a4a727b6900767854e0eb14cb17a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      a230b93fca18aaa16370ce5969ca90ad.exe
    • Size 828KB
    • SHA256 79b24566d743b542e79e4db241fe21c380a7a4a727b6900767854e0eb14cb17a
    • MD5 SHA1 SHA512 SSDEEP
    • DcRat

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

    • Modifies WinLogon for persistence

    • 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.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks