Analysis

  • max time kernel
    93s
  • 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
    26-11-2024 01:08

General

  • Target

    a311b3262e613cfb2369c34fd43d7bf064978fa3f8b8de6872ecbd800fcab628N.exe

  • Size

    994KB

  • MD5

    0cd2ddf464b5262402a777dec7c23d10

  • SHA1

    a23962a2ffee2c5c3cd2d5fb786abd5f8f6a5a11

  • SHA256

    a311b3262e613cfb2369c34fd43d7bf064978fa3f8b8de6872ecbd800fcab628

  • SHA512

    79e738b482a7488e6054f4fab0e83b6c153dc8b6725ea2e3a163cc305fed130731ac2cb3656d0ce40c4b674c6b5596e916e309d5d198ca4c13252a8ba8ce3350

  • SSDEEP

    24576:6bZAallWmmB2E672gWj6THPZGBQxM/gsFKh:MAOlWV6ImPZG22Kh

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
  • Loads dropped DLL 2 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\a311b3262e613cfb2369c34fd43d7bf064978fa3f8b8de6872ecbd800fcab628N.exe
    "C:\Users\Admin\AppData\Local\Temp\a311b3262e613cfb2369c34fd43d7bf064978fa3f8b8de6872ecbd800fcab628N.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:4744
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a311b3262e613cfb2369c34fd43d7bf064978fa3f8b8de6872ecbd800fcab628N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a311b3262e613cfb2369c34fd43d7bf064978fa3f8b8de6872ecbd800fcab628N.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:4604

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\a311b3262e613cfb2369c34fd43d7bf064978fa3f8b8de6872ecbd800fcab628N.exe

    Filesize

    953KB

    MD5

    70ea96240df0194ecc1a8e9277167338

    SHA1

    b1be61ec7d205d09779f8f987f7a36af15e5de44

    SHA256

    50e12638c66109aa72853fd18861b3f083c5ece50e6f79e39a9b56e30c2ab8ef

    SHA512

    16253489702e6e8249f0c7da4e4cc83e95235b07c381d67ae59f5f9dc10ea5bf6dac6b0d0463ad31b532523d3ad4793d3319f429692eb82b5dd80cec0c28d9d3

  • C:\Users\Admin\AppData\Local\Temp\nsz91A2.tmp\SkinnedControls.dll

    Filesize

    100KB

    MD5

    8d76a9d8bcaab7a35e7117ac14c2980f

    SHA1

    1d2e15ab7e843bb173d2a156618e59e9da09cf7a

    SHA256

    c032b9419c788ad521abc3d1c95649cb7a8f8c977633a3f2b38d26c717d2440a

    SHA512

    264e1fc437fe2880e6bed54fdd4745d5000298169c3f03613242b9b5350503f9a0f0254ac7c40d5c1210a75ea6b7b487c7a2f9f62462d89a77d89dd32bd04316

  • C:\Users\Admin\AppData\Local\Temp\nsz91A2.tmp\System.dll

    Filesize

    29KB

    MD5

    b88a1e0eabc83c0ea2444dcb9876f8e0

    SHA1

    a826534363c3d4a51d65c19525f757e4f27e3bc8

    SHA256

    b08141e69d51007af55784862e4d50a4f1d6f64e6ae6805070e5a23eafebbc06

    SHA512

    0083841b6034b31e562a9e55bb407acce78f4cec9c2a18242c80e45800e047632de11fe0c5b7fbdc479b78a187a6422937a10330d732c88a0256602c0e1781d0

  • memory/4744-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4744-109-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4744-111-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB