Analysis

  • max time kernel
    94s
  • 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
    04-01-2025 11:24

General

  • Target

    5b8ec89f5b089183a2e0b0040646590a62e197d319287d3a9cf6148b571e4500N.exe

  • Size

    160KB

  • MD5

    cce9a9111061a7296473b97c2caf37b0

  • SHA1

    2291cd644350fa77f8abf527906b70f4f75b4c2c

  • SHA256

    5b8ec89f5b089183a2e0b0040646590a62e197d319287d3a9cf6148b571e4500

  • SHA512

    67d67465dbcd9b28a131337c21504cc9dfce1ca21846af5880ea8e5063603d2ed0d2b24315ee6d87f7a0ca8e7449d5cd3e5b3bab4272fedac25353fb8223a919

  • SSDEEP

    3072:sr85C0XXRucat06j+qFl1mi98uTyEyvFUPZkUgAr/:k90X5at0rqFl1n98uTy3tFUH

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 1 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5b8ec89f5b089183a2e0b0040646590a62e197d319287d3a9cf6148b571e4500N.exe
    "C:\Users\Admin\AppData\Local\Temp\5b8ec89f5b089183a2e0b0040646590a62e197d319287d3a9cf6148b571e4500N.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:4288
    • C:\Users\Admin\AppData\Local\Temp\3582-490\5b8ec89f5b089183a2e0b0040646590a62e197d319287d3a9cf6148b571e4500N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\5b8ec89f5b089183a2e0b0040646590a62e197d319287d3a9cf6148b571e4500N.exe"
      2⤵
      • Executes dropped EXE
      PID:4172

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\5b8ec89f5b089183a2e0b0040646590a62e197d319287d3a9cf6148b571e4500N.exe

    Filesize

    120KB

    MD5

    02c64e682f565549482ef633f0b09e91

    SHA1

    18a41e31cccd023ef55198a5b13971b0c7269e10

    SHA256

    b3a58e23a474f0773c26db9871b878b2fc49a0e61f80ed01efd3daebada7f8b3

    SHA512

    0e5d22d2ede94215c2474ec07e53e1aebb014df5dac60ec3161fd4054641e8a6208e18a3903b1de7b67b6953bfc77f05c8614bb6e2e391596916a03928fa1383

  • memory/4288-91-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4288-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4288-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB