Analysis

  • max time kernel
    94s
  • max time network
    98s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/07/2024, 08:40

General

  • Target
    Files_/7z.exe
  • Size 205KB
  • Sample240708-kk8wpstcje
  • SHA256 dcd991e908b442aabbb173c5dcc29bb2f1444d64e128a989b281ebb9afc9a1b0
  • MD5 SHA1 SHA512 SSDEEP

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.

  • 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 2 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).

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Files_\7z.exe
    "C:\Users\Admin\AppData\Local\Temp\Files_\7z.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3328
    • C:\Users\Admin\AppData\Local\Temp\3582-490\7z.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\7z.exe"
      2⤵
      • Executes dropped EXE
      PID:3920

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        ACROTE~1.EXE

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
        • Size 86KB
        • SHA256 ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29
        • MD5 SHA1 SHA512 SSDEEP

        7z.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\7z.exe
        • Size 164KB
        • SHA256 34054651da2b197a040b1906b3c28d52f136c62676f1bf0b967c1fab7b2156ca
        • MD5 SHA1 SHA512 SSDEEP

        memory/3328-104-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3328-105-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3328-107-0x0000000000400000-0x000000000041B000-memory.dmp