Overview

overview

10

Static

static

10

DCRatBuild_Full.exe

windows7_x64

10

DCRatBuild_Full.exe

windows10-2004_x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    DCRatBuild_Full.bin
  • Size 2.5MB
  • Sample220707-vypebseee3
  • SHA256 dccd3eab40a7320e2d30eabd3bdb5ee0ba29d16176e73f4adf34e3158d50eef8
  • MD5 SHA1 SHA512
Score
10/10
dcratevasioninfostealerpersistenceratsuricata

Malware Config

Targets

    • Target
      DCRatBuild_Full.bin
    • Size 2.5MB
    • SHA256 dccd3eab40a7320e2d30eabd3bdb5ee0ba29d16176e73f4adf34e3158d50eef8
    • MD5 SHA1 SHA512
    Score
    10/10
    dcratevasioninfostealerpersistenceratsuricata

    • DcRat

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

      ratinfostealerdcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

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

    • suricata: ET MALWARE DCRAT Activity (GET)

      suricata: ET MALWARE DCRAT Activity (GET)

      suricata

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Disables Task Manager via registry modification

      evasion

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks