Analysis

  • max time kernel
    94s
  • 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
    18-12-2024 04:20

General

  • Target

    93fc760e9d53b499f6a58b3c748d4d96506c8c22184099bbe00890eb1c00bf1cN.exe

  • Size

    1.2MB

  • MD5

    27af5b935d4835c65317991b32830990

  • SHA1

    c40c4018a7595f513fa4a91153db0c3d41751dae

  • SHA256

    93fc760e9d53b499f6a58b3c748d4d96506c8c22184099bbe00890eb1c00bf1c

  • SHA512

    b99230c599ce3c127d0595b0d9e5ce53f72a166c598ef99447db34ffddccdff3c070473dcbeef2c227053a0dd1af3a1b898ad877daed12f7441772f9d171e9ed

  • SSDEEP

    24576:YpYjcVMUGBUBXugzOA21TYGHTA+J3pcna:aYjcV9XugV21EGzN59

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\93fc760e9d53b499f6a58b3c748d4d96506c8c22184099bbe00890eb1c00bf1cN.exe
    "C:\Users\Admin\AppData\Local\Temp\93fc760e9d53b499f6a58b3c748d4d96506c8c22184099bbe00890eb1c00bf1cN.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:2144
    • C:\Users\Admin\AppData\Local\Temp\3582-490\93fc760e9d53b499f6a58b3c748d4d96506c8c22184099bbe00890eb1c00bf1cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\93fc760e9d53b499f6a58b3c748d4d96506c8c22184099bbe00890eb1c00bf1cN.exe"
      2⤵
      • Executes dropped EXE
      PID:4816

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\93fc760e9d53b499f6a58b3c748d4d96506c8c22184099bbe00890eb1c00bf1cN.exe

    Filesize

    1.2MB

    MD5

    e2ed2edc9344e63b9b5939f8a1e21946

    SHA1

    e6a17653915e6be83b90447c1b0f63ef39632b77

    SHA256

    01f163d79cf8bf3a806f1cfcb56d24ebe690ae52a21166e0905777f729876664

    SHA512

    45cb5b6653e89ac3dae461350725152d090e9b82da822b2abd0ed2c3e44accc674da4d3637aa866ceea8e8ef6d153c36ee82333d09da7481ff4015da70a0b70e

  • memory/2144-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2144-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2144-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB