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Analysis

  • max time kernel
    94s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2024, 06:16

General

  • Target

    334431aabc8dcda0e7dba3ea718d0ac47a72927f0e926874b513efdb29ac4febN.exe

  • Size

    1.0MB

  • MD5

    ff7ecc061f797b525d567d5aad881620

  • SHA1

    9dafd7ec42ff260abc8d24735206038762839949

  • SHA256

    334431aabc8dcda0e7dba3ea718d0ac47a72927f0e926874b513efdb29ac4feb

  • SHA512

    0e00f343ac6f247862b58a9ab9606610c2e34c38b50be78ee4c906ebad66d01edc00a1a2339c7307fc8b94afd82eb4e2c06fcb972c989424754a6ac24ad9c370

  • SSDEEP

    12288:M6iDsy/RtABUHZoLDOBYHjnB4mgOWUXHZEuDHyUR8e9+na5/choU5xZKLUjR89+4:ydruukzv3ZEA8X9jeR

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\334431aabc8dcda0e7dba3ea718d0ac47a72927f0e926874b513efdb29ac4febN.exe
    "C:\Users\Admin\AppData\Local\Temp\334431aabc8dcda0e7dba3ea718d0ac47a72927f0e926874b513efdb29ac4febN.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:1668
    • C:\Users\Admin\AppData\Local\Temp\3582-490\334431aabc8dcda0e7dba3ea718d0ac47a72927f0e926874b513efdb29ac4febN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\334431aabc8dcda0e7dba3ea718d0ac47a72927f0e926874b513efdb29ac4febN.exe"
      2⤵
      • Executes dropped EXE
      PID:1736

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\334431aabc8dcda0e7dba3ea718d0ac47a72927f0e926874b513efdb29ac4febN.exe

    Filesize

    1009KB

    MD5

    ec5991f479e14a49af40f6180758994c

    SHA1

    bc1514b7ff874930cc7d4340f427679c247634b2

    SHA256

    dea800dc59302088ce982bed3a57458e40b559e7b8e77c1082cfac5c8b7b3b0d

    SHA512

    2850dabdd901489bca0002410ce27f2e2ac77a145b7108a66862d49c38696f8f2a90cd0de100ea434702e59367bceb0dbbfdff1529e919b93a76e74e23389220

  • memory/1668-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1668-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1668-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB