Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-01-2025 09:17

General

  • Target

    d1a4a9b2476e1b017991cf266e655a98c18250515baa16c600004351087459e8N.exe

  • Size

    2.3MB

  • MD5

    c33701f08308f00c82bfd32bd2b88ee0

  • SHA1

    111af088c2b84ec41a56ef9d21c5395b4e2a4313

  • SHA256

    d1a4a9b2476e1b017991cf266e655a98c18250515baa16c600004351087459e8

  • SHA512

    320d389d46a027c609e85eeb13405441ec5abe967b65bc057745974e37cfb81dcff77fab8f46d6e9c712c3452d74d04771ad47f532d1c751758d700e56f5fe11

  • SSDEEP

    24576:lz6LNgscVMffezn99I3ZkkkkG2qBzlIXKlIXhlIXclIXklIXalIXJ22tHgVQasHH:1x1MfGo5QHSEKh3N8

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).

  • Program crash 1 IoCs
  • 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 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d1a4a9b2476e1b017991cf266e655a98c18250515baa16c600004351087459e8N.exe
    "C:\Users\Admin\AppData\Local\Temp\d1a4a9b2476e1b017991cf266e655a98c18250515baa16c600004351087459e8N.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:4300
    • C:\Users\Admin\AppData\Local\Temp\3582-490\d1a4a9b2476e1b017991cf266e655a98c18250515baa16c600004351087459e8N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\d1a4a9b2476e1b017991cf266e655a98c18250515baa16c600004351087459e8N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2512
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2512 -s 856
        3⤵
        • Program crash
        PID:3652
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2512 -ip 2512
    1⤵
      PID:3688

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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\d1a4a9b2476e1b017991cf266e655a98c18250515baa16c600004351087459e8N.exe

      Filesize

      2.3MB

      MD5

      8e75565aebd39bca4850e0801d386bb3

      SHA1

      9f0b47bb0018b8f4f6fed4badc42922868beae77

      SHA256

      941e74e7a47c92e6f6e32fd4351d05822f82a4574d155bad3e912d66d783062b

      SHA512

      cab7c565f02a720a4c10e98f67ad5122c49885b493c52e21fa6a58bf1d206378c548aa74a51555f366b75f0da850dabb3687e0cac15e581fe169934a0d1f2525

    • memory/2512-12-0x000000007409E000-0x000000007409F000-memory.dmp

      Filesize

      4KB

    • memory/2512-13-0x00000000009D0000-0x0000000000C20000-memory.dmp

      Filesize

      2.3MB

    • memory/4300-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4300-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4300-100-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB