Analysis

  • max time kernel
    96s
  • 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
    16-12-2024 15:19

General

  • Target

    42259cd0fbeb28badd9b9b6eaeb6ccd7ec0b436e1f0427cfa03a418cc6615f23N.exe

  • Size

    245KB

  • MD5

    ad638113c5e9adc82d1f35dd1a7ee390

  • SHA1

    f0e193ac78ce3f55cbd859ad66e79d65887b5544

  • SHA256

    42259cd0fbeb28badd9b9b6eaeb6ccd7ec0b436e1f0427cfa03a418cc6615f23

  • SHA512

    2eba8d069624686cb928018885abbf9f0e00ee9eced0538c4a4dde2fd42b82ae4d4dd01f483958d8fcfb501c75b626aee1ad6893ffa4c1b6681ddf10429fdd31

  • SSDEEP

    6144:l9hN5aXpYc/HQS9YNlCUvuUOQwpgHzNJxFb8F:pPaXL9YNlCoHfb8F

Malware Config

Signatures

  • 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\42259cd0fbeb28badd9b9b6eaeb6ccd7ec0b436e1f0427cfa03a418cc6615f23N.exe
    "C:\Users\Admin\AppData\Local\Temp\42259cd0fbeb28badd9b9b6eaeb6ccd7ec0b436e1f0427cfa03a418cc6615f23N.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:1028
    • C:\Users\Admin\AppData\Local\Temp\3582-490\42259cd0fbeb28badd9b9b6eaeb6ccd7ec0b436e1f0427cfa03a418cc6615f23N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\42259cd0fbeb28badd9b9b6eaeb6ccd7ec0b436e1f0427cfa03a418cc6615f23N.exe"
      2⤵
      • Executes dropped EXE
      PID:1632

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

    568424d95b90ad4bebfd89e57c086fff

    SHA1

    c9d9bc1ac626ebdfa20fd9d75203242edff26e09

    SHA256

    c6619e71a161e7d30201c8b7f66075ce8cada6b7219b56e5b9fd988a38b2bc4d

    SHA512

    4d40f170030efae3b1f7e85b926462dc3fd86688ce757e843fcec52c720489f160503eb446a777d494403a0e3607f5ef9c7b6a66c6d2e6ced2b4ba10138c151b

  • C:\Users\Admin\AppData\Local\Temp\3582-490\42259cd0fbeb28badd9b9b6eaeb6ccd7ec0b436e1f0427cfa03a418cc6615f23N.exe

    Filesize

    205KB

    MD5

    dee06d4ba8f34297b8ac1c75c2588a7b

    SHA1

    85ddac85d4112457904286ac4f337c887be26a3a

    SHA256

    fd6729f9d896d816f94bcb7d0f9a9b153794e468f8d7ffa5ef1f7eaf2c28664c

    SHA512

    a82d8e1436722028e7c54aca1ec905eed073c8d668619a98f174d3ccd93a066e453a56197cf7fd8b84b263e0c861b1554c788eb2ae39334cc447e9d2fd1a2a1e

  • memory/1028-92-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/1028-93-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/1028-95-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB