Analysis

  • max time kernel
    95s
  • 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
    17-12-2024 03:12

General

  • Target

    7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe

  • Size

    349KB

  • MD5

    d1688bb079bb1cfdda7707c87c87edf0

  • SHA1

    10be0b4192e75a98416a013a8a96ecff28a521f6

  • SHA256

    7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75b

  • SHA512

    cef481f03241c2c38d2d7a6824a76b4559ae6d31966cd632fa551b7b2fabbe9e8b7dd89eda4543222dd470b6e15a032743ab8856cbde4a5bb4ae0e039442a300

  • SSDEEP

    3072:zr8WDrChywK6kYeK6oMfSuPb41Zy1nYlpmb5WY0B3SI1BC+Pd31fuUtPOVVP0j8M:PuS9KxM6urSK9U3oWlWVgahx4D9cO

Malware Config

Signatures

  • 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.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe
    "C:\Users\Admin\AppData\Local\Temp\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.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:1976
    • C:\Users\Admin\AppData\Local\Temp\3582-490\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4656
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 1760
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe

    Filesize

    2.4MB

    MD5

    d9e8a1fa55faebd36ed2342fedefbedd

    SHA1

    c25cc7f0035488de9c5df0121a09b5100e1c28e9

    SHA256

    bd7696911d75a9a35dfd125b24cb95003f1e9598592df47fa23a2568986a4a9a

    SHA512

    134644c68bd04536e9ea0a5da6e334d36b1ce8012a061fa6dabd31f85c16a1ac9eee8c40fee3d55f25c4d4edf0672de8ce204e344c800361cbcff092c09d7a33

  • C:\Users\Admin\AppData\Local\Temp\3582-490\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe

    Filesize

    309KB

    MD5

    2275c4bd6b85b2d05ac3a5f8e347e50e

    SHA1

    8b8da3211e2fe2984c7073b8dc1be0b2af20b4d9

    SHA256

    624984989ba18db9508a5311dd6a0c27b704776195a035ac4ba073aefe1a9a78

    SHA512

    fa52f7a4da08b7eb4c9cfd8d76fbfa0cccd9fc9674ab2aa686168ca5f74d50b2e3dc52aa38d3eadc1c2d7cb1fcd70ab820b8cbffd5ca07fabe2c8862ebece785

  • memory/1976-109-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1976-110-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1976-112-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4656-15-0x00007FFE55375000-0x00007FFE55376000-memory.dmp

    Filesize

    4KB

  • memory/4656-16-0x00007FFE550C0000-0x00007FFE55A61000-memory.dmp

    Filesize

    9.6MB

  • memory/4656-25-0x00007FFE550C0000-0x00007FFE55A61000-memory.dmp

    Filesize

    9.6MB