Analysis

  • max time kernel
    137s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-10-2024 22:51

General

  • Target

    4b5e1d6be94e7f69d1e51f56cad4e1bf2657ce4bd2a0b48b17d9b0923357c9b3.exe

  • Size

    708KB

  • MD5

    a5e68ec9989692c56066178f1aff88ac

  • SHA1

    7dec0fa05fc341985b29b8812868338a265b5f71

  • SHA256

    4b5e1d6be94e7f69d1e51f56cad4e1bf2657ce4bd2a0b48b17d9b0923357c9b3

  • SHA512

    e9c7519dc770e3c2b83a768c32bc8693d19b95cc65ea7cea6c5b0873dad56d547c07c7c8652d1cd48d583974ba67e4f22d8a76bcc785ea6dfae3c4955f7062c8

  • SSDEEP

    6144:k9GD0G2JJnokaPnFnvngRSR/f6cCZy8ZO7v5YGUsqY:dD0G2JJo7FvgRSR/icCZy8ZO7v5msqY

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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b5e1d6be94e7f69d1e51f56cad4e1bf2657ce4bd2a0b48b17d9b0923357c9b3.exe
    "C:\Users\Admin\AppData\Local\Temp\4b5e1d6be94e7f69d1e51f56cad4e1bf2657ce4bd2a0b48b17d9b0923357c9b3.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:2628
    • C:\Users\Admin\AppData\Local\Temp\3582-490\4b5e1d6be94e7f69d1e51f56cad4e1bf2657ce4bd2a0b48b17d9b0923357c9b3.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\4b5e1d6be94e7f69d1e51f56cad4e1bf2657ce4bd2a0b48b17d9b0923357c9b3.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1004

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\4b5e1d6be94e7f69d1e51f56cad4e1bf2657ce4bd2a0b48b17d9b0923357c9b3.exe

    Filesize

    668KB

    MD5

    4ef9f5d303b9800f2b97b154b61f21a7

    SHA1

    8a03adcafba6fb95e79c84ed99e2405a1d42a103

    SHA256

    7003b7c9a73ab3a49fb39c4b1d3b3a26d5f6c81e9593ab92b00d0ec54d47a34c

    SHA512

    9752be55c2e418e500f8d465ca1247937ae157e16497eb758c9306d042728e43fdcebf3b7d72cd85078fbac333d434c4d1b9eacc4e51412cadf692fc9a66b694

  • memory/2628-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2628-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2628-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2628-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB