Analysis

  • max time kernel
    93s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/01/2025, 01:19

General

  • Target

    9b76d41d4a302b9626f0e5c18322d0f82c36dfa00375a38da82c7de9e4f28712.exe

  • Size

    285KB

  • MD5

    c083498b8b7e14649d2d620240f1901a

  • SHA1

    dada43c3d5a13a15ce410604b71b072c0a339f9f

  • SHA256

    9b76d41d4a302b9626f0e5c18322d0f82c36dfa00375a38da82c7de9e4f28712

  • SHA512

    1b9060227615d2d79e2c6898e899e9537034921465ca13ae20f4bb85c41c30853cc0ab9dc4f75552cdb45e86951bd6a394b82cfd70a5f5372088e433e6270d86

  • SSDEEP

    6144:k9u7cz57G7cz57K7cz57/7cz57xqWQnsuUxhfkAw5ZOoGMKiEgQKUWyGTLV:yJnsuUTEIoG91MhyGTLV

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\9b76d41d4a302b9626f0e5c18322d0f82c36dfa00375a38da82c7de9e4f28712.exe
    "C:\Users\Admin\AppData\Local\Temp\9b76d41d4a302b9626f0e5c18322d0f82c36dfa00375a38da82c7de9e4f28712.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:3196
    • C:\Users\Admin\AppData\Local\Temp\3582-490\9b76d41d4a302b9626f0e5c18322d0f82c36dfa00375a38da82c7de9e4f28712.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\9b76d41d4a302b9626f0e5c18322d0f82c36dfa00375a38da82c7de9e4f28712.exe"
      2⤵
      • Executes dropped EXE
      PID:4844

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\9b76d41d4a302b9626f0e5c18322d0f82c36dfa00375a38da82c7de9e4f28712.exe

          Filesize

          245KB

          MD5

          e95ee1d55cda21a8a77c227e366b959b

          SHA1

          fa6a4db377e4278927778ea84ce2824d9d730082

          SHA256

          0d689acd76fdb05c3c3a049c14a52f31780fd4595194d74ab135aa84fe890a15

          SHA512

          845ebcc71fd4384e6fec867701ed4bf417f71453ad30da083b3109cfe965e3ce7a73ae20fb3ccf3c8c1f96b7312e8a8fcbc64540f3128eeb2479c1e693a44ec2

        • memory/3196-92-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB

        • memory/3196-93-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB

        • memory/3196-95-0x0000000000400000-0x000000000041B000-memory.dmp

          Filesize

          108KB