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
    19-12-2024 10:29

General

  • Target

    b4743683f3963ff5710b67b5d112dfa27d113ae28f662e482063c36718c84c3aN.exe

  • Size

    353KB

  • MD5

    710fd2c08303552769770e0f3ffa9f30

  • SHA1

    08889411cb97c4035f47b2b137ebd07cf84134e9

  • SHA256

    b4743683f3963ff5710b67b5d112dfa27d113ae28f662e482063c36718c84c3a

  • SHA512

    7cd1b18358eb30d95fb6894718a83d4c1bd2b0ebfe8a19844004b4812849f2b833615a8ca4bfd218b6ce9673e56cc8240a46f2109d74e9d7898f2c5f5373cd85

  • SSDEEP

    6144:k97y+Bumd0HzbtkMLsfnlYQoht7fhYnQhY7rAjWO:n+Z0HtIlYQonfa7rAjWO

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).

  • 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.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4743683f3963ff5710b67b5d112dfa27d113ae28f662e482063c36718c84c3aN.exe
    "C:\Users\Admin\AppData\Local\Temp\b4743683f3963ff5710b67b5d112dfa27d113ae28f662e482063c36718c84c3aN.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:1648
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b4743683f3963ff5710b67b5d112dfa27d113ae28f662e482063c36718c84c3aN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b4743683f3963ff5710b67b5d112dfa27d113ae28f662e482063c36718c84c3aN.exe"
      2⤵
      • Executes dropped EXE
      PID:2552

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\b4743683f3963ff5710b67b5d112dfa27d113ae28f662e482063c36718c84c3aN.exe

    Filesize

    312KB

    MD5

    83249979c5a8f2b3f37b58d203cbbbcc

    SHA1

    eab66eaccae54c17ac909de75284f70074ea172b

    SHA256

    9d12db2e8a5957bcb4f013e5e21245913f297113889c6ad80384e77f97a18e06

    SHA512

    64579845ad86bfd522b6bce9582705d1df1e50bbe529808a0ab8f2872fce5f27e9c67f15cf47e606e014542eba8e3aa8581455eb82ee06fe8b3be4c252660ec8

  • memory/1648-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1648-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1648-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB