Analysis

  • max time kernel
    151s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-12-2023 22:37

General

  • Target

    1641e1409f7b6d48073434e6339c6efa.exe

  • Size

    208KB

  • MD5

    1641e1409f7b6d48073434e6339c6efa

  • SHA1

    4ca96ed444c10aee0269f134353f7714626e56f4

  • SHA256

    b133a914b8f620889a023dea94aa2ae8880edd7a33502a99718ccf67b3a6bcec

  • SHA512

    7edd7205419f33f484c6ed9a582ad5d26580837a9b831613b3cb30ec9bc36db07a6b24e3a1a0b9d01765d8854277be5ff00eafd634892655c925512bca373ec0

  • SSDEEP

    6144:tRRy5nnu5W98TFK/fObT/bGiA14DFsqmVrWpMY9Fpp:t/Qu5W98TFK/fObT/bGidIrW39Fpp

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 53 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1641e1409f7b6d48073434e6339c6efa.exe
    "C:\Users\Admin\AppData\Local\Temp\1641e1409f7b6d48073434e6339c6efa.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3104
    • C:\Users\Admin\hooiwoj.exe
      "C:\Users\Admin\hooiwoj.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:4040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\hooiwoj.exe

    Filesize

    208KB

    MD5

    2ecd0b061bfaebf2266434ad673f2f80

    SHA1

    0209cc5fdd4c75016ac278e7a098d5607caec166

    SHA256

    183e1bba3d96052adc28d7783e4e1a39c4f2959bce51332e1babe0199f226dbf

    SHA512

    3d7ee1643a21902fb357e89cdaaca80245049d571aace60578cc3f09ba0b7dde4c301d07994275e0544355da8eaff3f73623c73a3c09076705d32880081b80bd