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
    25-11-2024 14:24

General

  • Target

    2c3af89f3c7246e4d9b6f088e34e0c152d2c0827aaac2b00e9498d3c8f0477f2N.exe

  • Size

    396KB

  • MD5

    558f7b07ea00bb4af64ba76d5f9eb890

  • SHA1

    e0f16b2c3fc21c87df76b624d384f6c614a2612c

  • SHA256

    2c3af89f3c7246e4d9b6f088e34e0c152d2c0827aaac2b00e9498d3c8f0477f2

  • SHA512

    d93336149f9a9fd8973a19decbe25654020de7889d23508ab472904efe8281bee52d0bded0cd257e6d5e526f6f1794801cd06eb49f3ad864a13b43d8120cdd09

  • SSDEEP

    3072:sr85CZ5UiDVQZYKrt33HtE9qmDoOAg0FubrAzqL30J5PTXw1RLpd5lPkLnoeGtKe:k9ZaXZLrtHteAO/Mqo/Lw1RPsLnU4VhI

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).

  • Program crash 1 IoCs
  • 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\2c3af89f3c7246e4d9b6f088e34e0c152d2c0827aaac2b00e9498d3c8f0477f2N.exe
    "C:\Users\Admin\AppData\Local\Temp\2c3af89f3c7246e4d9b6f088e34e0c152d2c0827aaac2b00e9498d3c8f0477f2N.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:1608
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2c3af89f3c7246e4d9b6f088e34e0c152d2c0827aaac2b00e9498d3c8f0477f2N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2c3af89f3c7246e4d9b6f088e34e0c152d2c0827aaac2b00e9498d3c8f0477f2N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:636
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 636 -s 236
        3⤵
        • Program crash
        PID:1096
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 636 -ip 636
    1⤵
      PID:1780

    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\2c3af89f3c7246e4d9b6f088e34e0c152d2c0827aaac2b00e9498d3c8f0477f2N.exe

      Filesize

      355KB

      MD5

      805e4f49f60a080b25277b137c5b031b

      SHA1

      45deafe811876e5afc6d02ff4bea79a85cce642e

      SHA256

      64d30d02a305ae9beb0504f353db3f1f97ed79d3ed0856a3d69c3460081a9242

      SHA512

      cb35795b84751303799236ac22b200cb31207880661a577ff3e60fa21746b9f6e7f37d5f718ac567fd6779fd9b162538b1bbf607c2f1e8bcf6f850d26310a7ed

    • memory/1608-94-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1608-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1608-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1608-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB