Overview

overview

10

Static

static

5

Install_098k.exe

windows10-2004-x64

10

Install_098k.exe

windows11-ltsc_2024-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    6597051edf5af4eb0841e24ee54131c1ea7e6164e2f76cd8b1eaf5ef3ca2d43b
  • Size 278KB
  • Sample260724-ldq8rawhpg
  • SHA256 6597051edf5af4eb0841e24ee54131c1ea7e6164e2f76cd8b1eaf5ef3ca2d43b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordefense_evasionexecutionpersistenceransomware

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 47.243.36.18:5252

  • 47.243.36.18:80

Attributes
  • campaign_date

    2026. 7.21

Targets

    • Target
      Install_098k.exe
    • Size 343KB
    • SHA256 8c8925ce1d14d062830db9213a4629a4de53d463bba43be7f5c3ee7925796bad
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordefense_evasionexecutionvalleyrat_s2persistenceransomware

    • Detects ValleyRAT payload

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • 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

    • 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