Analysis

  • max time kernel
    94s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-12-2024 02:06

General

  • Target

    af659a1a2a185c7f25a784c26fd06b66e796ab0f8687088c891b8a5361cf9c7c.exe

  • Size

    2.3MB

  • MD5

    39edc31ba17b62c290839409291acbca

  • SHA1

    3d5b7271c099ebf8df5d281dedaa1db22cc43673

  • SHA256

    af659a1a2a185c7f25a784c26fd06b66e796ab0f8687088c891b8a5361cf9c7c

  • SHA512

    e81c71932d45a51a774a3d82c85100b8389eaa8f50673785a31b27bc85dd9027e684b80645b46effea86a6641d7cab53df9b59be7a7b095e4a6d7918880802c1

  • SSDEEP

    24576:JSXWhM6NOdZjUYSeV5S1lU/Rl45x3+Pt/Rt+xbK+klQkR3ieRvfVWyWe4e5qm9Vo:1osL5J+Pt/YK5yeRvdWyWe4XXLoQ

Malware Config

Signatures

  • Detect Neshta payload 5 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af659a1a2a185c7f25a784c26fd06b66e796ab0f8687088c891b8a5361cf9c7c.exe
    "C:\Users\Admin\AppData\Local\Temp\af659a1a2a185c7f25a784c26fd06b66e796ab0f8687088c891b8a5361cf9c7c.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:4956
    • C:\Users\Admin\AppData\Local\Temp\3582-490\af659a1a2a185c7f25a784c26fd06b66e796ab0f8687088c891b8a5361cf9c7c.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\af659a1a2a185c7f25a784c26fd06b66e796ab0f8687088c891b8a5361cf9c7c.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2524

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\af659a1a2a185c7f25a784c26fd06b66e796ab0f8687088c891b8a5361cf9c7c.exe

    Filesize

    2.3MB

    MD5

    271c704e3e93cbe424ac22300a9438bc

    SHA1

    e0c87f2b57fa14381f592ede4e0282240a68d5ec

    SHA256

    648e42812f2169181c8e158d9b7b52d76fa2347a15b7ee14ff1ba4ba64a7efe1

    SHA512

    9014af986f270ee4dde2f6fed7f9c7f2bee161996522d528934963b67c5693fa1e11047aa4e7671a8387c8f1eaa8839fa72929bf5914df8b733f307406d7b9e5

  • memory/2524-12-0x00007FFC0E1E3000-0x00007FFC0E1E5000-memory.dmp

    Filesize

    8KB

  • memory/2524-13-0x000002241EA80000-0x000002241ECD0000-memory.dmp

    Filesize

    2.3MB

  • memory/2524-14-0x00007FFC0E1E0000-0x00007FFC0ECA1000-memory.dmp

    Filesize

    10.8MB

  • memory/2524-98-0x00007FFC0E1E0000-0x00007FFC0ECA1000-memory.dmp

    Filesize

    10.8MB

  • memory/4956-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4956-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4956-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4956-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB