Analysis

  • max time kernel
    149s
  • max time network
    87s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/06/2024, 22:53

General

  • Target
    TudouVa.exe
  • Size 3.1MB
  • Sample240612-2t4f1stfmg
  • SHA256 df21244436967f84445da37d6d4dd61d71f22a4f95eb6041c29a0dc1d1740963
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 15 IoCs
  • Suspicious use of SendNotifyMessage 15 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TudouVa.exe
    "C:\Users\Admin\AppData\Local\Temp\TudouVa.exe"
    1⤵
    • Drops startup file
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:1448

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        tudouva.ini

        • Path C:\Users\Admin\AppData\Local\Temp\tudouva.ini
        • Size 484B
        • SHA256 3aca384f3b37fb815da16d879ba900dd49dc69ddb634825dda93b0fe04cbdb93
        • MD5 SHA1 SHA512

        tudouva.ini

        • Path C:\Users\Admin\AppData\Local\Temp\tudouva.ini
        • Size 449B
        • SHA256 1f031c22d74c41edbc55fa25771ee7195588bef05ab5a2685cf4aad913d60dc2
        • MD5 SHA1 SHA512

        memory/1448-12-0x0000000003F20000-0x0000000004038000-memory.dmp

        memory/1448-13-0x0000000004060000-0x000000000408F000-memory.dmp

        memory/1448-15-0x0000000004060000-0x0000000004093000-memory.dmp

        memory/1448-19-0x0000000004060000-0x00000000040AE000-memory.dmp

        memory/1448-17-0x0000000004060000-0x000000000409F000-memory.dmp

        memory/1448-21-0x0000000004100000-0x000000000412F000-memory.dmp

        memory/1448-45-0x0000000060900000-0x0000000060953000-memory.dmp