Analysis

  • max time kernel
    95s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-11-2024 21:02

General

  • Target

    b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe

  • Size

    125KB

  • MD5

    ab2b37d75b61a76cf411323c9881f4b9

  • SHA1

    51c8b0e275400851ace0141a7e519fd3f91dd480

  • SHA256

    b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a

  • SHA512

    d826c78ef9b317c25c5f87a39f30ae637302548f79b66c2a3d9180ccf454eabe363cb97aa4a0be73e19b7e205fa6376ab2cf4d091928cac7accd4a8b03ca59eb

  • SSDEEP

    3072:sr85CzZjAwkpMwLJHZeveV8kQPu4lI5w2HgaH12m4029ZY:k9VjAwCMwxZesg212m402S

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\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe
    "C:\Users\Admin\AppData\Local\Temp\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.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:4420
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3640

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\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe

    Filesize

    85KB

    MD5

    50b7f7d82758a9fc6e7e6a1e52c8d20e

    SHA1

    5a7f917c316ecd0f0988b46a329aeda9cd9c82d8

    SHA256

    ef1e366a0eb09001428240a7304f8f8bebb7ec865c3eb29d8c2cef4fd3abf76f

    SHA512

    2be105b5e37c9a5fdb204d379b4b8716891e46a10d72d78b46ee380d8c3c67e290ce72d5b6f0384bd4d5c514f098b308ec48f18daf58f8a7bb7aa7cab63a6fef

  • memory/4420-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4420-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4420-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB