Analysis

  • max time kernel
    105s
  • max time network
    107s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2024 19:11

General

  • Target

    afb8c5f3efaaee063fa8f3d28f7454d2696bc8e3e56520192cbe8642c88b1664N.exe

  • Size

    704KB

  • MD5

    7c877a27aea83f38a88424bfffb26310

  • SHA1

    81312088646799e0da4d196803a523b9bffec45b

  • SHA256

    afb8c5f3efaaee063fa8f3d28f7454d2696bc8e3e56520192cbe8642c88b1664

  • SHA512

    8913c8b542aed560ed5b6c9eac1820f01be640e37c6fe55fa8202e6849c04d2233c692c29fc558c3dd760555f6de2409058f58af7f3192ff0d41cf0d5dd196b2

  • SSDEEP

    12288:AuHnWgyrwQV1rPja37nzHtA6SxCJdcNQR6t0FgyxpDa:AuHcrwQV1rP+37nzHtA6NJdA0Syxpe

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.

  • 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\afb8c5f3efaaee063fa8f3d28f7454d2696bc8e3e56520192cbe8642c88b1664N.exe
    "C:\Users\Admin\AppData\Local\Temp\afb8c5f3efaaee063fa8f3d28f7454d2696bc8e3e56520192cbe8642c88b1664N.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:4164
    • C:\Users\Admin\AppData\Local\Temp\3582-490\afb8c5f3efaaee063fa8f3d28f7454d2696bc8e3e56520192cbe8642c88b1664N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\afb8c5f3efaaee063fa8f3d28f7454d2696bc8e3e56520192cbe8642c88b1664N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1780

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\afb8c5f3efaaee063fa8f3d28f7454d2696bc8e3e56520192cbe8642c88b1664N.exe

    Filesize

    664KB

    MD5

    e2c54c0bfaf9c45159f2f49994d23d23

    SHA1

    816c451417319267edd92c1a7e11f80f146b99f0

    SHA256

    b95be176650b79ba08899ca2715d1d805fe3c1ad6c138385aef2d993c715d796

    SHA512

    24136cd05c25e8c130ca047b55a00e04b964797443b7e51531892e4868df19a36cc00593ca339530de78b13cfc7a3ab71b8e72160af0b05ed31e40499aa2790d

  • memory/1780-12-0x00000000005D0000-0x00000000005D1000-memory.dmp

    Filesize

    4KB

  • memory/1780-96-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4164-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4164-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4164-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4164-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4164-102-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB