Analysis

  • max time kernel
    95s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 18:31

General

  • Target

    c87c2056bd98da9a8bd638bfaea4c763322a49685731e94b302c78b250685813N.exe

  • Size

    165KB

  • MD5

    91100aef14d017023fd0974a82df09b0

  • SHA1

    e9237037c4ba9cac40c99c329e6ad7442ca06439

  • SHA256

    c87c2056bd98da9a8bd638bfaea4c763322a49685731e94b302c78b250685813

  • SHA512

    2f53f51b48abc8b02b8137398c2f62b43757eb46e510ef06f264cbf69d65febd347e65cf08042180f7979f1d79bce80fe739b61ed34de3fdfd216b2899b74332

  • SSDEEP

    3072:sr85C7vAAxWJEZdw6gnPLbLjuGzTeRUOmwZm:k97JWJE3yPL1zTeUOmwZm

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 SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c87c2056bd98da9a8bd638bfaea4c763322a49685731e94b302c78b250685813N.exe
    "C:\Users\Admin\AppData\Local\Temp\c87c2056bd98da9a8bd638bfaea4c763322a49685731e94b302c78b250685813N.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:2356
    • C:\Users\Admin\AppData\Local\Temp\3582-490\c87c2056bd98da9a8bd638bfaea4c763322a49685731e94b302c78b250685813N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\c87c2056bd98da9a8bd638bfaea4c763322a49685731e94b302c78b250685813N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2904

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\c87c2056bd98da9a8bd638bfaea4c763322a49685731e94b302c78b250685813N.exe

    Filesize

    124KB

    MD5

    1ebce206c13a5652abb6ef2a9d325009

    SHA1

    59ddcec45ed316b6d04e8240d88cbe93c92dc120

    SHA256

    4d64bc965960bc3400d60ac88df4de7213472b89af2515d912c85de4ec011dbb

    SHA512

    600c9687b883222722916934184d1c7449036a20726253e3b39f008bb4d4512cecc3dc86828edd1ae93a88fa2f3380d64ec3a527dd19df03f916d166ec13753a

  • memory/2356-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2356-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2356-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB