Analysis

  • max time kernel
    299s
  • max time network
    297s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/09/2026, 09:49

General

  • Target
    20260915.80521125.EDF026321CDA.exe
  • Size 35KB
  • Sample260916-ltdmlaycnf
  • SHA256 b92632bdc48ba876cb7bbbda4348eac771fc5a450f4b4f3afa09b2efcedd79f6
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • valleyrat_s2

Version
  • 1.0

C2
  • 156.251.18.127:449

  • 156.251.18.127:443

Signatures

  • Family: ValleyRat

    ValleyRat stage2 is a backdoor written in C++.

  • Detects ValleyRAT payload 10 IoCs
  • UAC bypass 3 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 44 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 8 IoCs
  • Suspicious behavior: LoadsDriver 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • System policy modification 1 TTPs 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20260915.80521125.EDF026321CDA.exe
    "C:\Users\Admin\AppData\Local\Temp\20260915.80521125.EDF026321CDA.exe"
    1⤵
    • UAC bypass
    • Modifies registry class
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3284
    • C:\Windows\explorer.exe
      explorer.exe shell:::{CE7673B2-C12E-4C3D-A189-A33F7A326821}
      2⤵
        PID:1880
    • C:\Users\Admin\AppData\Local\Temp\~tmp_07592.tmp
      C:\Users\Admin\AppData\Local\Temp\~tmp_07592.tmp
      1⤵
      • Executes dropped EXE
      PID:4228
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5328
      • C:\ProgramData\OpenraVPN\Loader.exe
        "C:\ProgramData\OpenraVPN\Loader.exe"
        2⤵
        • UAC bypass
        • Adds Run key to start application
        • Enumerates connected drives
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • System policy modification
        PID:1548
    • C:\Users\Admin\AppData\Local\Temp\~tmp_29933.tmp
      C:\Users\Admin\AppData\Local\Temp\~tmp_29933.tmp
      1⤵
      • Executes dropped EXE
      PID:3568
    • C:\ProgramData\OpenraVPN\Loader.exe
      "C:\ProgramData\OpenraVPN\Loader.exe"
      1⤵
      • UAC bypass
      • Enumerates connected drives
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • System policy modification
      PID:412
    • C:\Users\Admin\AppData\Local\Temp\~tmp_47078.tmp
      C:\Users\Admin\AppData\Local\Temp\~tmp_47078.tmp
      1⤵
      • Executes dropped EXE
      PID:3028
    • C:\Users\Admin\AppData\Local\Temp\~tmp_02740.tmp
      C:\Users\Admin\AppData\Local\Temp\~tmp_02740.tmp
      1⤵
      • Executes dropped EXE
      PID:2604
    • C:\Users\Admin\AppData\Local\Temp\~tmp_09778.tmp
      C:\Users\Admin\AppData\Local\Temp\~tmp_09778.tmp
      1⤵
      • Executes dropped EXE
      PID:4168

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          Loader.exe

          • Path C:\ProgramData\OpenraVPN\Loader.exe
          • Size 35KB
          • SHA256 b92632bdc48ba876cb7bbbda4348eac771fc5a450f4b4f3afa09b2efcedd79f6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          calibre-launcher.dll

          • Path C:\ProgramData\OpenraVPN\calibre-launcher.dll
          • Size 156KB
          • SHA256 7de1a0910a7aec98e5c3fc81432d692aff2086c94c71d5d44720c076d6dc6d65
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msvcp140.dll

          • Path C:\ProgramData\OpenraVPN\msvcp140.dll
          • Size 620KB
          • SHA256 76c9060fd749d837c92b716a91a190b038f2c03e46da124a36f88075361a9be5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vcruntime140.dll

          • Path C:\ProgramData\OpenraVPN\vcruntime140.dll
          • Size 83KB
          • SHA256 6cadb4fef773c23b511acc8b715a084815c6e41dd8c694bc70090a97b3b03fb9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vcruntime140_1.dll

          • Path C:\ProgramData\OpenraVPN\vcruntime140_1.dll
          • Size 36KB
          • SHA256 04e7ccbdcad7cbaf0ed28692fb08eab832c38aad9071749037ee7a58f45e9d7d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ~tmp_07592.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\~tmp_07592.tmp
          • Size 54KB
          • SHA256 81372e638dc556b777e74d924afe3ddff620c7d21fbac0eb5857103825cf7093
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/412-52-0x000001CF21BA0000-0x000001CF21BF0000-memory.dmp

          memory/412-53-0x000001CF21BA0000-0x000001CF21BF0000-memory.dmp

          memory/412-68-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/412-25-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/412-42-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/412-43-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/412-48-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/412-50-0x000001CF21BA0000-0x000001CF21BF0000-memory.dmp

          memory/1548-57-0x000002339FC60000-0x000002339FCB0000-memory.dmp

          memory/1548-74-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1548-56-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1548-33-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1548-59-0x000002339FC60000-0x000002339FCB0000-memory.dmp

          memory/1548-60-0x000002339FC60000-0x000002339FCB0000-memory.dmp

          memory/1548-32-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1548-11-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1548-75-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1548-826-0x0000000180000000-0x00000001800A3000-memory.dmp

          memory/1548-825-0x000002339FC60000-0x000002339FCB0000-memory.dmp

          memory/1548-882-0x000002339FC60000-0x000002339FCB0000-memory.dmp

          memory/1548-944-0x0000000180000000-0x000000018004E000-memory.dmp

          memory/1548-943-0x000002339FC60000-0x000002339FCB0000-memory.dmp

          memory/1548-967-0x000002339FC60000-0x000002339FCB0000-memory.dmp