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
    31-12-2024 05:49

General

  • Target

    64b917671274c83edfaa80852d534e1fd1c549a0ec158dd8bad7bb8527dec34bN.exe

  • Size

    146KB

  • MD5

    1d83e09063f39c7e11f64778f0bf5e10

  • SHA1

    7b737be9d4916ebc4bbff184af913e3fbe74a30b

  • SHA256

    64b917671274c83edfaa80852d534e1fd1c549a0ec158dd8bad7bb8527dec34b

  • SHA512

    fab8fc251e7c8710344c0db891e8f2f4cc2e2728064f1d97c9532b1e17d66f13d506db1041219b28208b7835379f7473c504ecb47e86f5364623a3c161cc7d69

  • SSDEEP

    3072:sr85CkkbAYn2GgYlBYN2fHYTo+m4t8wDSRUTT:k9xbAMpgY3gTP8DRUTT

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\64b917671274c83edfaa80852d534e1fd1c549a0ec158dd8bad7bb8527dec34bN.exe
    "C:\Users\Admin\AppData\Local\Temp\64b917671274c83edfaa80852d534e1fd1c549a0ec158dd8bad7bb8527dec34bN.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:3012
    • C:\Users\Admin\AppData\Local\Temp\3582-490\64b917671274c83edfaa80852d534e1fd1c549a0ec158dd8bad7bb8527dec34bN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\64b917671274c83edfaa80852d534e1fd1c549a0ec158dd8bad7bb8527dec34bN.exe"
      2⤵
      • Executes dropped EXE
      PID:4516

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\64b917671274c83edfaa80852d534e1fd1c549a0ec158dd8bad7bb8527dec34bN.exe

    Filesize

    105KB

    MD5

    71bc4206b05edc74de3095c590ff6878

    SHA1

    7bf108add9dd927fa53effe786bcc41e79971213

    SHA256

    9c13fe16a5f6fddce0e973714480a218ab8dab539df80e1333ff5b7cf61360f0

    SHA512

    777b2e7c891a82ab311358329fc45a967e4997a836bef54b8dace90d1209822b1e765b59dcc3625dcc2b45e69d019354b8ba575038b38a05e19ef2e05203b486

  • memory/3012-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3012-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3012-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB