Overview

overview

10

Static

static

3

E4B8ADE696...85.exe

windows10-2004-x64

10

E4B8ADE696...85.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    E4B8ADE69687E58C85.exe
  • Size 643KB
  • Sample260807-rfwtxaztd1
  • SHA256 c894ed71694fd28d60113b5594f9e61e5133a18f410960849e868b60b8beb973
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
donutloadervalleyrat_s2backdoordiscoveryexecutionloaderpersistence

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • windonws.com:6667

Attributes
  • campaign_date

    2026. 6. 3

Targets

    • Target
      E4B8ADE69687E58C85.exe
    • Size 643KB
    • SHA256 c894ed71694fd28d60113b5594f9e61e5133a18f410960849e868b60b8beb973
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordiscoveryexecutiondonutloadervalleyrat_s2loaderpersistence

    • Detects DonutLoader

      loader

    • Detects ValleyRAT payload

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

      loaderdonutloader

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks