Overview

overview

10

Static

static

3

c0103fbffe...92.exe

windows10-2004-x64

10

c0103fbffe...92.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    c0103fbffe7779bf42d578035f607681620589d65c20e3f7c9d34c509b07cd92
  • Size 11.9MB
  • Sample261017-e81bksdb46
  • SHA256 c0103fbffe7779bf42d578035f607681620589d65c20e3f7c9d34c509b07cd92
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
donutloadervalleyrat_s2adwarebackdoordefense_evasionloaderpersistenceprivilege_escalationransomwarespyware

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 103.82.54.126:4892

Attributes
  • campaign_date

    2026.10.16

Extracted

Family

  • valleyrat_s2

C2

  • 103.82.54.126:4892

Targets

    • Target
      c0103fbffe7779bf42d578035f607681620589d65c20e3f7c9d34c509b07cd92
    • Size 11.9MB
    • SHA256 c0103fbffe7779bf42d578035f607681620589d65c20e3f7c9d34c509b07cd92
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    adwarebackdoordefense_evasiondonutloadervalleyrat_s2loaderpersistenceprivilege_escalationransomwarespyware

    • 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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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