Analysis

  • max time kernel
    898s
  • max time network
    446s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    30/10/2026, 22:36

General

  • Target
    HealthCheckService.lnk
  • Size 1KB
  • Sample261030-2jpvwaff77
  • SHA256 4002b7190215f22001bd3cbaf99d77c2acb45d7cbadc05a86c06feec79e5f286
  • MD5 SHA1 SHA512 TLSH
Score
3/10

Malware Config

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\HealthCheckService.lnk
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:4948
    • C:\WINDOWS\system32\cmd.exe
      "C:\WINDOWS\system32\cmd.exe" /c "build.cmd"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:4816
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:3340
        • C:\Users\Admin\AppData\Local\Temp\MSBuild.exe
          "C:\Users\Admin\AppData\Local\Temp\MSBuild.exe" "C:\Users\Admin\AppData\Local\Temp\HealthCheckService.csproj" /nologo /v:q /nodereuse:false /noconlog
          3⤵
          • System Location Discovery: System Language Discovery
          PID:4908

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/4908-0-0x0000000000870000-0x00000000008B0000-memory.dmp

          memory/4908-1-0x0000000001280000-0x000000000129A000-memory.dmp

          memory/4908-2-0x0000000005390000-0x00000000054EA000-memory.dmp