Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-12-2024 06:35

General

  • Target

    a8956fd36908a3b2f2cb831307b0b890e696debd7648843509bb7efc51ca9498N.exe

  • Size

    234KB

  • MD5

    771bcc4a8c0ddb19f5c9bb73a6d8ed50

  • SHA1

    dd755c635c3d0e4c49fdd9269ced66b3a0b7736a

  • SHA256

    a8956fd36908a3b2f2cb831307b0b890e696debd7648843509bb7efc51ca9498

  • SHA512

    6d2f4591e2ac1ce3826d4f5fa60a724641e4cf6e309670fd3e3bf829faa6730e6cda84dd4ffca0b52f5b5e5b2f3774bc0b50ce68cd5cdb7636ac84c9ede7a600

  • SSDEEP

    1536:JxqjQ+P04wsmJCYHwReW9/YJR5lRv72O1U81cR:sr85CWC/YJTlljcR

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\a8956fd36908a3b2f2cb831307b0b890e696debd7648843509bb7efc51ca9498N.exe
    "C:\Users\Admin\AppData\Local\Temp\a8956fd36908a3b2f2cb831307b0b890e696debd7648843509bb7efc51ca9498N.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:4768
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a8956fd36908a3b2f2cb831307b0b890e696debd7648843509bb7efc51ca9498N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a8956fd36908a3b2f2cb831307b0b890e696debd7648843509bb7efc51ca9498N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3304

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\a8956fd36908a3b2f2cb831307b0b890e696debd7648843509bb7efc51ca9498N.exe

    Filesize

    194KB

    MD5

    8fd7a6833cf801fa28da740843ede61b

    SHA1

    9a1c078e7994caabf563492b61ee6b58542828c0

    SHA256

    09254d06f6a3edf7cba8249f1b49c94ec02597d4ff25e17546d70a5e0aa32e63

    SHA512

    64d8c3083c6b87145bd0bc2d7138094fb922846a3703d41ae00b3a59105c4a58675fb5f01ed1ad22045b70aed00bfaab0e07b0a95936af893b1c3dc85349cbd6

  • memory/4768-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4768-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4768-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB