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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
    11/11/2024, 08:42

General

  • Target

    997f27e050b837b9a4ec30158653c14b0dfe16648b5782b85b989a73e967f42cN.exe

  • Size

    279KB

  • MD5

    fd55b3e9bbce1f98bf9d357cca4eed60

  • SHA1

    2a6527a79cc0c674b53058072fa6402e98eb2117

  • SHA256

    997f27e050b837b9a4ec30158653c14b0dfe16648b5782b85b989a73e967f42c

  • SHA512

    94005006f92af1d11f0d8659a8930aea7bef25150f59fcc5b6d4bf1f9eb35e44866b560c8a6f13cd4878060b4aa43a767f5261b516dc4e87d421d2e66b4bab64

  • SSDEEP

    6144:k9A3SblSBfb4Rbzwv2LcfOtAOfsyf8C7Zwq4LloDdE:CblSp4RsLWtFs3Kw7LEE

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\997f27e050b837b9a4ec30158653c14b0dfe16648b5782b85b989a73e967f42cN.exe
    "C:\Users\Admin\AppData\Local\Temp\997f27e050b837b9a4ec30158653c14b0dfe16648b5782b85b989a73e967f42cN.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:1260
    • C:\Users\Admin\AppData\Local\Temp\3582-490\997f27e050b837b9a4ec30158653c14b0dfe16648b5782b85b989a73e967f42cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\997f27e050b837b9a4ec30158653c14b0dfe16648b5782b85b989a73e967f42cN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1808

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\997f27e050b837b9a4ec30158653c14b0dfe16648b5782b85b989a73e967f42cN.exe

    Filesize

    238KB

    MD5

    ac0605588d840d5a78179e6e20570361

    SHA1

    99e0bdda7b0741fd6b06879df03410bd949d9091

    SHA256

    e411e21596fa015d7a57ba0acdb164b92a83a11fc3581f8ef0b3c657ffc592c8

    SHA512

    b1d77b66b2111e9e5bc07136bd549dc30333d8f55f7b97709f056ba5d19ca34ed833d0031d4a35159bfa2d19f2dafafb2e986ddd6d73fb87c58e97de0af35317

  • memory/1260-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1260-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1260-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB