General

  • Target
    b2ed94774d28f6a99e563f15777cc015.exe
  • Size 3.3MB
  • Sample220825-back3sddbm
  • SHA256 3112d4e0121280fb873e65e7077ca465e38566e6ebedd9389f3186cd801992a4
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      b2ed94774d28f6a99e563f15777cc015.exe
    • Size 3.3MB
    • SHA256 3112d4e0121280fb873e65e7077ca465e38566e6ebedd9389f3186cd801992a4
    • 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.

    • UAC bypass

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Executes dropped EXE

    • Checks computer location settings

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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • 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 v6

Tasks