Overview

overview

10

Static

static

5

Notice fro...en.exe

windows10-2004-x64

9

Notice fro...en.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    Notice from Tax Departmen.zip
  • Size 281KB
  • Sample260717-qfc65abx8k
  • SHA256 ed357a60736944842e1dbcf8fe87a353be52537c86ecfc27eb41bcdc2e2890e8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordefense_evasionpersistenceransomware

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 116.213.43.144:443

  • 116.213.43.144:80

Attributes
  • campaign_date

    2026. 7.16

Targets

    • Target
      Notice from Tax Departmen.exe
    • Size 354KB
    • SHA256 f673012d7465ac3ead085f967f6d953de3945a6f432a8184e90a862191fb6276
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasionbackdoorvalleyrat_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

    • Looks for VMWare Tools registry key

      defense_evasion

    • Deletes itself

    • Executes dropped EXE

    • 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