Analysis

  • max time kernel
    95s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-11-2024 20:57

General

  • Target

    f6f9529f43721eec06c23436030dd9e5b72b2aabc5b3b793fd69283987cec421N.exe

  • Size

    412KB

  • MD5

    4a774f1c7d79630cef93ac4fe5355660

  • SHA1

    5243132489c740c61e5e8f546c457fccdb59e271

  • SHA256

    f6f9529f43721eec06c23436030dd9e5b72b2aabc5b3b793fd69283987cec421

  • SHA512

    8e821fa6604c34d4819a5d74b1320bbc67558c8db68680e346185dc2affb6c89c251ccb0d827cad38b5295d816ecbb01b7793ee3f7612af754fd2748b3c6c6c7

  • SSDEEP

    3072:sr85CY0dTtpoNMtov0xESk8laASQS5P9FKFUbKWS/7TkF7A2+HgZjw2SPhWyr85C:k9Y0lINA/S5PnWUbKFk+HgZqPhB9

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).

  • 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\f6f9529f43721eec06c23436030dd9e5b72b2aabc5b3b793fd69283987cec421N.exe
    "C:\Users\Admin\AppData\Local\Temp\f6f9529f43721eec06c23436030dd9e5b72b2aabc5b3b793fd69283987cec421N.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:2248
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f6f9529f43721eec06c23436030dd9e5b72b2aabc5b3b793fd69283987cec421N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f6f9529f43721eec06c23436030dd9e5b72b2aabc5b3b793fd69283987cec421N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4848
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4848 -s 408
        3⤵
        • Program crash
        PID:1440
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4848 -ip 4848
    1⤵
      PID:3816

    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\f6f9529f43721eec06c23436030dd9e5b72b2aabc5b3b793fd69283987cec421N.exe

      Filesize

      372KB

      MD5

      53be06307341b86d89855ed6de542d08

      SHA1

      1a8cb7965255f448b2646093908277f35c7c524a

      SHA256

      7f5b8a5bb31bbe4e433d35fb3edd9db78eb3d8c07279384eb27604e6f6622d2e

      SHA512

      97b922dec4c285f37233d55e261ec7a1c5d86bb61462baa83bb447fba810e0c3f8c6866d525abd88806e3909567876714a58208b297a6ec952b3ad06cb52ec6d

    • memory/2248-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2248-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2248-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB