Overview

overview

10

Static

static

5

sptsi_yo4o.exe

windows10-2004-x64

10

sptsi_yo4o.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    0757c8283e3c4fe69d73295cb904a2d6de5e1b89de6768f878398bd8c805dab0
  • Size 281KB
  • Sample260717-tm7absfs2k
  • SHA256 0757c8283e3c4fe69d73295cb904a2d6de5e1b89de6768f878398bd8c805dab0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordefense_evasionpersistenceransomwaretrojan

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. 7

Targets

    • Target
      sptsi_yo4o.exe
    • Size 347KB
    • SHA256 ec3c30c6447713970aaa9e9a244f3f85136225435dc16185b44704e8a516c138
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    backdoordefense_evasionvalleyrat_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

    • 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