Analysis

  • max time kernel
    148s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/11/2026, 23:07

General

  • Target
    2026-10-31_8c1f9052af973d7e693d036f01f31916_elex_neshta_ransomhub_stealc_stop.exe
  • Size 4.5MB
  • Sample261101-24dcksdx7w
  • SHA256 25cf049f9d9d783e3d154ab370fd8962072fc38266e2075efdbe47b30b0c1835
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Detect Neshta payload 5 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: LoadsDriver 8 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-31_8c1f9052af973d7e693d036f01f31916_elex_neshta_ransomhub_stealc_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-31_8c1f9052af973d7e693d036f01f31916_elex_neshta_ransomhub_stealc_stop.exe"
    1⤵
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1360
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2026-10-31_8c1f9052af973d7e693d036f01f31916_elex_neshta_ransomhub_stealc_stop.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2026-10-31_8c1f9052af973d7e693d036f01f31916_elex_neshta_ransomhub_stealc_stop.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4216
      • C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\InsydeFlash.exe
        .\InsydeFlash.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3624
        • C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\FlsHook.exe
          C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\FlsHook.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:5844
  • C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\iscflashx64.sys
    C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\iscflashx64.sys
    1⤵
    • Executes dropped EXE
    PID:4944

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        AcroRd32.exe

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe
        • Size 2.4MB
        • SHA256 8268d3fefe8ca96a25a73690d14bacf644170ab5e9e70d2f8eeb350a4c83f9f6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        2026-10-31_8c1f9052af973d7e693d036f01f31916_elex_neshta_ransomhub_stealc_stop.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\2026-10-31_8c1f9052af973d7e693d036f01f31916_elex_neshta_ransomhub_stealc_stop.exe
        • Size 4.5MB
        • SHA256 84036d45fd0f1cd9065e14956fd6b44b1eb43fc89ed940de6567117840b257e9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        FlsHook.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\FlsHook.exe
        • Size 227KB
        • SHA256 616ef32e71805fc03cd278ab3cc34031a1a147cff6e790f2d1ca472bdbf234d6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        FlsHookDll.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\FlsHookDll.dll
        • Size 191KB
        • SHA256 a52cf46e26c17165a21068899c364606f8847df5deaf8e2b7ca9a35149b62466
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ISCFLASH.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\ISCFLASH.dll
        • Size 694KB
        • SHA256 9fe49c7b391f5c3ae5270f645f7a3a9008eab0558ade81a9092daa84cbfc5823
        • MD5 SHA1 SHA512 SSDEEP TLSH

        InsydeFlash.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\InsydeFlash.exe
        • Size 675KB
        • SHA256 a17fdbf728cde50993b52e9aa7d47d54e791eb108e9b1a89f3dcfedf5ec84050
        • MD5 SHA1 SHA512 SSDEEP TLSH

        QCL20A20.fd

        • Path C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\QCL20A20.fd
        • Size 7.5MB
        • SHA256 08cebee78bfd55249f85d5eae7b3eeab04d334cbb8c03c3c8a51d9bfae04cd7e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        iscflashx64.sys

        • Path C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\iscflashx64.sys
        • Size 57KB
        • SHA256 c9f1d94677e4baa47acebaaf651972c6819d76ecbc8175d835238b0fa1a58ab7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        platform.ini

        • Path C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\platform.ini
        • Size 31KB
        • SHA256 0cc632b3796f33ee9d59fa2d4c9e0b1a38a582ab0de7dd075557b20728b70710
        • MD5 SHA1 SHA512 SSDEEP TLSH

        platforms.ini

        • Path C:\Users\Admin\AppData\Local\Temp\7zS2541.tmp\platforms.ini
        • Size 31KB
        • SHA256 42dfadd43f02411267c3541fe053b58fa3af244badf20b7acbbd67d15741bc30
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1360-1785-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1360-1786-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1360-1787-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/1360-1789-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4216-1784-0x0000000000400000-0x0000000000468000-memory.dmp

        memory/4944-1669-0x0000000000010000-0x0000000000022000-memory.dmp