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Analysis

  • max time kernel
    111s
  • 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
    05/12/2024, 05:23

General

  • Target

    c5996155efd099e8400f3cf51df74f03ccf1f24f8ff0acff0b72f9e4c377b9f7N.exe

  • Size

    3.4MB

  • MD5

    1af1959d95e0ab0dc5aab8885afe3c70

  • SHA1

    9c715ef45043b4da060373fce231bb608a276d66

  • SHA256

    c5996155efd099e8400f3cf51df74f03ccf1f24f8ff0acff0b72f9e4c377b9f7

  • SHA512

    231c0f36986cdd9543d53e6cc0d2304efed18966180e94abac2336d74f198e9ad5919f5e750ad447002e0fe7c69f07be2e1288a920062a9e4ddf0af16334fdc7

  • SSDEEP

    24576:CAJa9BWH7lL7fxqGr7d2MFvZAhkk1L5R6VU0uFviCBEN2H5r3qYNwa/DSouhbkAE:CoH7lL7Rddk4Uv1EN2TwaU9HHWHBHP

Malware Config

Signatures

  • Detect Neshta payload 5 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5996155efd099e8400f3cf51df74f03ccf1f24f8ff0acff0b72f9e4c377b9f7N.exe
    "C:\Users\Admin\AppData\Local\Temp\c5996155efd099e8400f3cf51df74f03ccf1f24f8ff0acff0b72f9e4c377b9f7N.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:1960
    • C:\Users\Admin\AppData\Local\Temp\3582-490\c5996155efd099e8400f3cf51df74f03ccf1f24f8ff0acff0b72f9e4c377b9f7N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\c5996155efd099e8400f3cf51df74f03ccf1f24f8ff0acff0b72f9e4c377b9f7N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2168
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1196
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:2576

      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\c5996155efd099e8400f3cf51df74f03ccf1f24f8ff0acff0b72f9e4c377b9f7N.exe

        Filesize

        3.3MB

        MD5

        9a8d97331fb268469cb420ffe16d72f9

        SHA1

        4689061dbb1dc0301315266d766bba6b4cd22461

        SHA256

        3ca8d5d3d798dbef57cec998b44bb611852431d738925b5cc26717618585b9bb

        SHA512

        10e0fdebd07e0f61770bafef268e63a3ca71efa169ec0de75ec09eefe35cd96ffae8f8cfdfb9b765ac27213e1fb1505f4f114ce5337de0a6a70b93002a1fd581

      • memory/1960-93-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1960-96-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1960-98-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1960-101-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2168-9-0x0000000000920000-0x0000000000921000-memory.dmp

        Filesize

        4KB

      • memory/2168-95-0x0000000000920000-0x0000000000921000-memory.dmp

        Filesize

        4KB

      • memory/2168-94-0x0000000000400000-0x000000000075B200-memory.dmp

        Filesize

        3.4MB