Analysis

  • max time kernel
    110s
  • max time network
    109s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-01-2025 08:48

General

  • Target

    ef68f1eab7deb9bed15039a135ad621043fdd6fa7972a9e0387a46f904a019e2N.exe

  • Size

    434KB

  • MD5

    17a273519c4950e8930a2f879d1659c0

  • SHA1

    5234cab83797f504fb80e2e7d2f13dd46737f906

  • SHA256

    ef68f1eab7deb9bed15039a135ad621043fdd6fa7972a9e0387a46f904a019e2

  • SHA512

    2ad5443e9db241137c686483a52261d8f13d74ef2debecb3685b79069f73699fb9c913088229be4bd93d591ae61903e89bc9d63e56d475897a622486b6c9cc4a

  • SSDEEP

    12288:4Gj8yn/BZ22ON+8JLxN+uqESXCID0hr/wTQg0k:RxpZ22OE8FxN+umXTCTwTQg0k

Malware Config

Signatures

  • Detect Neshta payload 4 IoCs
  • Neshta

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

  • Neshta family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 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 2 IoCs

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

  • Modifies registry class 15 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ef68f1eab7deb9bed15039a135ad621043fdd6fa7972a9e0387a46f904a019e2N.exe
    "C:\Users\Admin\AppData\Local\Temp\ef68f1eab7deb9bed15039a135ad621043fdd6fa7972a9e0387a46f904a019e2N.exe"
    1⤵
    • Checks computer location settings
    • 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:3256
    • C:\Users\Admin\AppData\Local\Temp\3582-490\ef68f1eab7deb9bed15039a135ad621043fdd6fa7972a9e0387a46f904a019e2N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\ef68f1eab7deb9bed15039a135ad621043fdd6fa7972a9e0387a46f904a019e2N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4600

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

    Filesize

    86KB

    MD5

    3b73078a714bf61d1c19ebc3afc0e454

    SHA1

    9abeabd74613a2f533e2244c9ee6f967188e4e7e

    SHA256

    ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

    SHA512

    75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

  • C:\Users\Admin\AppData\Local\Temp\3582-490\ef68f1eab7deb9bed15039a135ad621043fdd6fa7972a9e0387a46f904a019e2N.exe

    Filesize

    393KB

    MD5

    628600eb426ff420ad60cefd98a79e20

    SHA1

    2695f900d16d98deb51be9555a95a70b921c5ed7

    SHA256

    ca287a10ed2ca704a3c7de3e5755940400c047b72d1916745af59bc5ce1fe7c3

    SHA512

    464fe33a988a17b24f18950f604f0d0855132481a5fd8c6c5eab8b506b7a5ad69336b0237985e91280354436e04bd9968e6340a10faebd1610cd9051c06fb9da

  • memory/3256-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3256-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3256-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4600-13-0x0000000000740000-0x0000000000743000-memory.dmp

    Filesize

    12KB

  • memory/4600-12-0x0000000000400000-0x00000000004D1000-memory.dmp

    Filesize

    836KB

  • memory/4600-99-0x0000000000740000-0x0000000000743000-memory.dmp

    Filesize

    12KB

  • memory/4600-98-0x0000000000400000-0x00000000004D1000-memory.dmp

    Filesize

    836KB