Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/10/2026, 18:45

General

  • Target
    20261027.22367819.C8A41F9D8851.exe
  • Size 343KB
  • Sample261027-xd9kwaec66
  • SHA256 6d3fee81ad1339b8e9a2ae7d24669fc9ad9ec84c3b13932289fb20a25bce5596
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • valleyrat_s2

Version
  • 1.0

C2
  • 204.194.49.108:21107

Signatures

  • Family: ValleyRat

    ValleyRat stage2 is a backdoor written in C++.

  • UAC bypass 3 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 15 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: LoadsDriver 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20261027.22367819.C8A41F9D8851.exe
    "C:\Users\Admin\AppData\Local\Temp\20261027.22367819.C8A41F9D8851.exe"
    1⤵
    • UAC bypass
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3516
    • C:\Windows\SYSTEM32\citool.exe
      "citool.exe" -r
      2⤵
        PID:2056
      • C:\ProgramData\MicroPoint\WinCombo.exe
        "C:\ProgramData\MicroPoint\WinCombo.exe"
        2⤵
        • Adds Run key to start application
        • Executes dropped EXE
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        PID:1328
    • C:\ProgramData\MicroPoint\Security_Module.dat
      C:\ProgramData\MicroPoint\Security_Module.dat
      1⤵
      • Executes dropped EXE
      PID:4184
    • C:\ProgramData\MicroPoint\WinCombo.exe
      "C:\ProgramData\MicroPoint\WinCombo.exe"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1300

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          Security_Module.dat

          • Path C:\ProgramData\MicroPoint\Security_Module.dat
          • Size 66KB
          • SHA256 83dc55570a84dd66c771885549ba1b8480c4d35f42b1547ceebd80be0bd79f00
          • MD5 SHA1 SHA512 SSDEEP TLSH

          WinCombo.exe

          • Path C:\ProgramData\MicroPoint\WinCombo.exe
          • Size 343KB
          • SHA256 6d3fee81ad1339b8e9a2ae7d24669fc9ad9ec84c3b13932289fb20a25bce5596
          • MD5 SHA1 SHA512 SSDEEP TLSH

          appshare.dll

          • Path C:\ProgramData\MicroPoint\appshare.dll
          • Size 3.3MB
          • SHA256 7c16cd83296daa3daeaabd495bfcdac82fe1b6d4a91bf1285291107b0bf5fd94
          • MD5 SHA1 SHA512 SSDEEP TLSH

          mediastores.dll

          • Path C:\ProgramData\MicroPoint\mediastores.dll
          • Size 248KB
          • SHA256 02f7f062d9065e15b064afd94137da0723ac19db953733800ea3a04394ba44b5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msvcp140.dll

          • Path C:\ProgramData\MicroPoint\msvcp140.dll
          • Size 553KB
          • SHA256 3048df1cf8d476e998dde28ed6b67856b47ec5ae2b2c221fb1733f43c550c701
          • MD5 SHA1 SHA512 SSDEEP TLSH

          util.dll

          • Path C:\ProgramData\MicroPoint\util.dll
          • Size 1.4MB
          • SHA256 889c8747e20356a83f7e81c1206de869beeed3707408716656ab5b5a14451044
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vcruntime140.dll

          • Path C:\ProgramData\MicroPoint\vcruntime140.dll
          • Size 108KB
          • SHA256 9593801b89cf3c0a46056f4d923d67b5c685fb8760f007b4d194e4a6a6ed9396
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vcruntime140_1.dll

          • Path C:\ProgramData\MicroPoint\vcruntime140_1.dll
          • Size 38KB
          • SHA256 b49a9b9c334e66bb14e0bd784be2e0a86edc7d24a9ebf90d1b2bbd71451695c9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1300-25-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1300-27-0x00000173DBDD0000-0x00000173DBF42000-memory.dmp

          memory/1328-12-0x000001C7B4A80000-0x000001C7B4AA3000-memory.dmp

          memory/1328-13-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1328-15-0x0000000140000000-0x000000014002A000-memory.dmp

          memory/1328-14-0x000001C7B4AB0000-0x000001C7B4AB1000-memory.dmp

          memory/1328-26-0x000001C7B3050000-0x000001C7B31C2000-memory.dmp