Overview

overview

10

Static

static

10

DCRatBuild.exe

windows10-2004-x64

10

DCRatBuild.exe

windows11-21h2-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    DCRatBuild.exe
  • Size 3.0MB
  • Sample260718-aej1aady2y
  • SHA256 9e8670e7ae7b4176972f239e0ae129f4d4d1ec9f74bfd8c1e5829db34eaa7998
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
dcratdiscoveryexecutioninfostealerpersistencerat

Malware Config

Targets

    • Target
      DCRatBuild.exe
    • Size 3.0MB
    • SHA256 9e8670e7ae7b4176972f239e0ae129f4d4d1ec9f74bfd8c1e5829db34eaa7998
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoveryexecutiondcratinfostealerpersistencerat

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Family: DcRat

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

      ratinfostealerdcrat

    • Process spawned unexpected child process

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

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Executes a VBScript file via the Windows Script Host.

      execution

    • SmartAssembly .NET packer

      Detects SmartAssembly .NET packer.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks