Overview

overview

10

Static

static

5

Install_8e6w.exe

windows10-2004-x64

10

Install_8e6w.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    b38aa863b4619f6b647b7a16543e5f7e7769d0a046383f7315fbdda45bc14de2
  • Size 226KB
  • Sample260727-kee2fayyfz
  • SHA256 b38aa863b4619f6b647b7a16543e5f7e7769d0a046383f7315fbdda45bc14de2
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordefense_evasionexecutionpersistenceransomwaretrojan

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 47.243.155.133:5252

  • 47.243.155.133:80

Attributes
  • campaign_date

    2026. 7.22

Targets

    • Target
      Install_8e6w.exe
    • Size 345KB
    • SHA256 45ef4fcb0219130647e71f8223ec6535aa0bfbd652972011846465709829438f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordefense_evasionexecutionvalleyrat_s2persistenceransomwaretrojan

    • Detects ValleyRAT payload

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Windows security bypass

      defense_evasiontrojan

    • Looks for VirtualBox Guest Additions in registry

      defense_evasion

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Drops file in Drivers directory

    • Looks for VMWare Tools registry key

      defense_evasion

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

      defense_evasiontrojan

    • 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