Analysis

  • max time kernel
    91s
  • max time network
    93s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-12-2024 08:07

General

  • Target

    05738717f29d3fb07f2fd088881879e4d00fbcf81d685fd141102ded555a041dN.exe

  • Size

    605KB

  • MD5

    bc2c4209e56908fa99d673f73678c470

  • SHA1

    e27ee04cfd9e6cc59f6514f77b84eba0486a7017

  • SHA256

    05738717f29d3fb07f2fd088881879e4d00fbcf81d685fd141102ded555a041d

  • SHA512

    4549a503c0a007306c334bb66f0c955f9d467cf4133283e06a0fe94d7fcbfbe0b00a7b8138952c54a367abd3e4ae7626f1cbde5bd24c1d34dd1000b9b61e3a8f

  • SSDEEP

    12288:/+ihGVHbS0R5kuu+wegJDEVTnTssg8lD8:JqHbn3lVn9R8

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 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05738717f29d3fb07f2fd088881879e4d00fbcf81d685fd141102ded555a041dN.exe
    "C:\Users\Admin\AppData\Local\Temp\05738717f29d3fb07f2fd088881879e4d00fbcf81d685fd141102ded555a041dN.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:3616
    • C:\Users\Admin\AppData\Local\Temp\3582-490\05738717f29d3fb07f2fd088881879e4d00fbcf81d685fd141102ded555a041dN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\05738717f29d3fb07f2fd088881879e4d00fbcf81d685fd141102ded555a041dN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3776

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\05738717f29d3fb07f2fd088881879e4d00fbcf81d685fd141102ded555a041dN.exe

    Filesize

    564KB

    MD5

    073a4fac4fb4d2426f1b8aeea3a51694

    SHA1

    0378b21c9708e60e0d4564d81b8b90525e75471d

    SHA256

    311e4062d9580a900ff0f6363dc7cdb01d9c2d7573946049f9dc0ff4e3a1f2ce

    SHA512

    7f0852be2de717e64ae5092cf4f6148d7f61e56ad253763ae6860c21e970b7eb2fecd241d3505631f22baa63348e5eacc6ce9f63584f846aa2a6b41d004875f3

  • memory/3616-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3616-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3616-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB