Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/07/2026, 18:28

General

  • Target
    WinHex.exe
  • Size 2.3MB
  • Sample260728-w4emrasend
  • SHA256 13f31346780baa4df60d44d10616fc4c8bd0a1467a2829a25bdeae08d5412e38
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

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

  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 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 2 IoCs

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

  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WinHex.exe
    "C:\Users\Admin\AppData\Local\Temp\WinHex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4628
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\wh.cmd" "
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\WinHex64.exe
        WinHex64.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Enumerates connected drives
        • Suspicious use of SetWindowsHookEx
        PID:760

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        Chinese.txt

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\Chinese.txt
        • Size 45KB
        • SHA256 3543c72fc2896327797a380aa4980485afc3ec86966bdd8b107e0458d361151b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        WinHex.cfg

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\WinHex.cfg
        • Size 16KB
        • SHA256 f5fad1dcd1f2dde8449e164a2d40ac6db1cb73a132fe66780a0676fab85cf9ff
        • MD5 SHA1 SHA512 SSDEEP TLSH

        WinHex64.exe

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\WinHex64.exe
        • Size 2.9MB
        • SHA256 3b162bb7eb31f600cfb4351a667c3d5f7ca2ffb13cf833a0d877c51523e89b42
        • MD5 SHA1 SHA512 SSDEEP TLSH

        language.dat

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\language.dat
        • Size 376KB
        • SHA256 a9009d7e961f3c0c75e3fd4ddf5639b810127a43469dfb388cb77d354b83716a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        timezone.dat

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\timezone.dat
        • Size 4KB
        • SHA256 a5ac049ef055907977fd743b73bf58a5892867396060c8e609df85ce8e7a581a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        user.txt

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\user.txt
        • Size 197B
        • SHA256 33b0dfe931a58097a5a8f1554d24024d83c8d1156c6249fe5090d5c4caeb37cb
        • MD5 SHA1 SHA512 TLSH

        wh.cmd

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\wh.cmd
        • Size 97B
        • SHA256 3ed1eb0228396f7abe8c3903e8de22bf2fe32480121fd2815ad862be49e14682
        • MD5 SHA1 SHA512 TLSH

        hash2.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\x64\hash2.dll
        • Size 194KB
        • SHA256 2c31e7aacba30ad7113e2a66fe0966e4bf66026bd39e782fbe5e66dcf3dd7e3a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        zlib1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_SFX_SX_5223PNO\x64\zlib1.dll
        • Size 132KB
        • SHA256 b20bdc4701eabe9cb4d488ca0ef781737c509f77313614bf09e2edb3aa1902d8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/760-80-0x0000000000400000-0x0000000000714000-memory.dmp

        memory/4628-0-0x0000000000400000-0x0000000000422000-memory.dmp

        memory/4628-79-0x0000000000400000-0x0000000000422000-memory.dmp