Analysis

  • max time kernel
    93s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-12-2024 20:05

General

  • Target

    16f872e00ebafc31e7607997ef03eedef69f603a96ae7e8acc1009a8dd19c602.exe

  • Size

    9.3MB

  • MD5

    bf9bab6072fe8ebcaecc1963583c2889

  • SHA1

    8fefe9a419c1573ec3a32d1955f45afc5da1106b

  • SHA256

    16f872e00ebafc31e7607997ef03eedef69f603a96ae7e8acc1009a8dd19c602

  • SHA512

    2b57663d64e1f9b9fd9dd61c27ad79645bd476e4bdc000a8eda5bc5b81a9a684ae9c43cb0d7f7c13966b735759ac75b025b6d017bfb39c8c0c71b12bde25e057

  • SSDEEP

    196608:2qMS5A8r2wSwfhK2eilgTo3+jggWUCatEEZvZyMR7NZ:2g5x2hyK2e4g0TxatEEh8IJZ

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.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 8 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16f872e00ebafc31e7607997ef03eedef69f603a96ae7e8acc1009a8dd19c602.exe
    "C:\Users\Admin\AppData\Local\Temp\16f872e00ebafc31e7607997ef03eedef69f603a96ae7e8acc1009a8dd19c602.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:4772
    • C:\Users\Admin\AppData\Local\Temp\3582-490\16f872e00ebafc31e7607997ef03eedef69f603a96ae7e8acc1009a8dd19c602.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\16f872e00ebafc31e7607997ef03eedef69f603a96ae7e8acc1009a8dd19c602.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4736
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 1656
        3⤵
        • Program crash
        PID:1560
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4736 -ip 4736
    1⤵
      PID:1300

    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\16f872e00ebafc31e7607997ef03eedef69f603a96ae7e8acc1009a8dd19c602.exe

      Filesize

      9.2MB

      MD5

      863d635522818cc98d3c1c4975c27577

      SHA1

      488501df4f7a9407d889826315716bd3beb2317b

      SHA256

      bc7025f7e9fb77cd61508c34a9cd7d0fad2efd8635be801ccca34ba3a6038348

      SHA512

      cc694e4cc67c0ccb8af1ab9eb6bb72420eea0d91053368ef9ef02f563601041f5f22b7716b3c66f542d4265ce8f371528172211d984388880dd007237f8a10f9

    • memory/4736-8-0x00000000007C0000-0x000000000234C000-memory.dmp

      Filesize

      27.5MB

    • memory/4736-25-0x00000000007C0000-0x000000000234C000-memory.dmp

      Filesize

      27.5MB

    • memory/4772-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4772-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4772-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB