Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/12/2024, 00:51

General

  • Target

    75c5ad7cb9aa07f80a93877021cafbfc3d7b10a9b3e7658d4e4f35c4d814d1b2N.exe

  • Size

    289KB

  • MD5

    a85dfed9d23c7b571768a191b25fa630

  • SHA1

    5e85b83a7aa6258cf50203dbbc727f60e0cf132a

  • SHA256

    75c5ad7cb9aa07f80a93877021cafbfc3d7b10a9b3e7658d4e4f35c4d814d1b2

  • SHA512

    176807080984065557f47365c5c9ef814e53dd79ba5dd2e18cc89dfef198f2f741d808bd7b3264317d13bdc5cb925228aa1f6d771ed9edcfda3d25516cc0c3de

  • SSDEEP

    6144:k9FCc8o7/XhMPMInVQQU7keNTAH/n+nIrjr7Aep:Mj8kOMInsep

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\75c5ad7cb9aa07f80a93877021cafbfc3d7b10a9b3e7658d4e4f35c4d814d1b2N.exe
    "C:\Users\Admin\AppData\Local\Temp\75c5ad7cb9aa07f80a93877021cafbfc3d7b10a9b3e7658d4e4f35c4d814d1b2N.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:3908
    • C:\Users\Admin\AppData\Local\Temp\3582-490\75c5ad7cb9aa07f80a93877021cafbfc3d7b10a9b3e7658d4e4f35c4d814d1b2N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\75c5ad7cb9aa07f80a93877021cafbfc3d7b10a9b3e7658d4e4f35c4d814d1b2N.exe"
      2⤵
      • Executes dropped EXE
      PID:4952

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\75c5ad7cb9aa07f80a93877021cafbfc3d7b10a9b3e7658d4e4f35c4d814d1b2N.exe

    Filesize

    249KB

    MD5

    8a1ba929aeabae64a5c19e3374df7e3e

    SHA1

    3f0383f65ded0388b463ed684ae96d23e1449f67

    SHA256

    6895f3782962706dc71e1708511e87d6eb6ed5844da253729f13ace5b2edd82d

    SHA512

    895d8d83ebca4827bc7e6a00886c073ec758fb98418e485fd2f98fedbcb7fcd877fa9aebe1caa8c4c995e3b9e8bbb02974a9d4e8b8f46513eac2bb9701bd827d

  • memory/3908-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3908-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3908-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB