Analysis

  • max time kernel
    143s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 01:34

General

  • Target
    137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe
  • Size 686KB
  • Sample240531-by7fcsab8t
  • SHA256 137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 6 IoCs
  • Neshta

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • 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).

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe
    "C:\Users\Admin\AppData\Local\Temp\137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:924
    • C:\Users\Admin\AppData\Local\Temp\137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe
      "C:\Users\Admin\AppData\Local\Temp\137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe"
      2⤵
        PID:1624
      • C:\Users\Admin\AppData\Local\Temp\137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe
        "C:\Users\Admin\AppData\Local\Temp\137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe"
        2⤵
        • Checks computer location settings
        • Modifies system executable filetype association
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Modifies registry class
        PID:1044

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          ACROTE~1.EXE

          • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
          • Size 86KB
          • SHA256 5d69ee0f8d647b7bd888830ce1e462adc2af365d473e00554a119b741f33bc52
          • MD5 SHA1 SHA512 SSDEEP

          137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe

          • Path C:\Users\Admin\AppData\Local\Temp\3582-490\137e8677d7629105f81f0b3a00af62efbfb8f663073a79c82f533d31df82b48b.exe
          • Size 645KB
          • SHA256 b35c93798eb8778390bbf981da821c0a58c88d4b38b762a1f94bed46a808b47e
          • MD5 SHA1 SHA512 SSDEEP

          memory/924-10-0x000000000A660000-0x000000000A6FC000-memory.dmp

          memory/924-17-0x0000000075240000-0x00000000759F0000-memory.dmp

          memory/924-4-0x00000000054F0000-0x00000000054FA000-memory.dmp

          memory/924-5-0x0000000075240000-0x00000000759F0000-memory.dmp

          memory/924-6-0x0000000008030000-0x0000000008046000-memory.dmp

          memory/924-7-0x0000000006650000-0x000000000665C000-memory.dmp

          memory/924-8-0x0000000006660000-0x0000000006670000-memory.dmp

          memory/924-9-0x00000000066A0000-0x000000000672C000-memory.dmp

          memory/924-0-0x000000007524E000-0x000000007524F000-memory.dmp

          memory/924-1-0x00000000009A0000-0x0000000000A50000-memory.dmp

          memory/924-2-0x0000000005A90000-0x0000000006034000-memory.dmp

          memory/924-3-0x0000000005420000-0x00000000054B2000-memory.dmp

          memory/1044-16-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1044-14-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1044-12-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1044-11-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1044-114-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/1044-116-0x0000000000400000-0x000000000041B000-memory.dmp