Overview

overview

10

Static

static

3

3135.docx.exe

windows10-2004-x64

8

3135.docx.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    3135.docx.exe
  • Size 28KB
  • Sample260626-h6etmsav3m
  • SHA256 ca3586dbe56a8300f9e34ce92becc58e12f4612c3d48a324136c50115f1cb23c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
valleyrat_s2backdoordiscoverypersistence

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 198.176.60.32:6666

  • 198.176.60.32:8888

  • 198.176.60.32:80

Attributes
  • campaign_date

    2026. 6.21

Targets

    • Target
      3135.docx.exe
    • Size 28KB
    • SHA256 ca3586dbe56a8300f9e34ce92becc58e12f4612c3d48a324136c50115f1cb23c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoverybackdoorvalleyrat_s2persistence

    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

      backdoorvalleyrat_s2

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks