Analysis

  • max time kernel
    95s
  • max time network
    96s
  • 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 08:32

General

  • Target

    584cf159ee6233206b02fc5cc5e28fc3bcc4a3509e8da27f9a21ad59a75255c6N.exe

  • Size

    455KB

  • MD5

    a7f073388c67ad53a4ed2b15fac0fe50

  • SHA1

    3da5b555887e214a9e0064527f406f2311505161

  • SHA256

    584cf159ee6233206b02fc5cc5e28fc3bcc4a3509e8da27f9a21ad59a75255c6

  • SHA512

    ba1d31196a0abdd96be6ca786b186e3011e5bdc081a9af902d123927d77eacac26c4191871df8e0401c513305ace76cd9392a10facc1a14bf0e3ab739d2e9472

  • SSDEEP

    6144:k9h1l4Kax0yz4A54ihzJ+lGHbeZfJXnIZO5sVQSs:2HPax0yh54iNJEGHsiM5sad

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 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 WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\584cf159ee6233206b02fc5cc5e28fc3bcc4a3509e8da27f9a21ad59a75255c6N.exe
    "C:\Users\Admin\AppData\Local\Temp\584cf159ee6233206b02fc5cc5e28fc3bcc4a3509e8da27f9a21ad59a75255c6N.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:1576
    • C:\Users\Admin\AppData\Local\Temp\3582-490\584cf159ee6233206b02fc5cc5e28fc3bcc4a3509e8da27f9a21ad59a75255c6N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\584cf159ee6233206b02fc5cc5e28fc3bcc4a3509e8da27f9a21ad59a75255c6N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3912

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\584cf159ee6233206b02fc5cc5e28fc3bcc4a3509e8da27f9a21ad59a75255c6N.exe

    Filesize

    415KB

    MD5

    bbc1e0855cd4d5da35fc3d0f42656446

    SHA1

    1a6fb507f008f7698b54caba6411a931b1071fad

    SHA256

    c0fa13bf547de6cd679a459012617ec50a991be9df78517d33891f8eaa224167

    SHA512

    21e849ad8fb249ea2e290de82193771cb739b270d90ab9324dbfae5e1e36fa6a654559bc51ea3294e33cb74ed723a3306ccf08b1beb37671130e282b475ef6f0

  • memory/1576-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1576-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1576-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB