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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/11/2022, 00:11

General

  • Target

    505762ca6aea854746866b01f75d1c345fe2a6b0af3c198be1b8a6b4c34f3b23.exe

  • Size

    100KB

  • MD5

    2622ccb71369d576c596ee6b63486f26

  • SHA1

    37ee829acd4bf5c9097962c4d1d44c7242a4e791

  • SHA256

    505762ca6aea854746866b01f75d1c345fe2a6b0af3c198be1b8a6b4c34f3b23

  • SHA512

    b1286e04193460b63cf8a11085eb8287960ad8a69dfcfc6d26122637181a8d8d249fab4b6ed041f0738185c178fd015b53e380f083e138b4194047e8908f8ff9

  • SSDEEP

    1536:fGXuK8F4QbkId9DLgxr/iox2/586lBI57Q8sXZ922E0ujnfb5TWYll+sJo:dKgnfI/iz/5jlByUXP22Exnfwolvo

Score
10/10

Malware Config

Signatures

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

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

  • Adds Run key to start application 2 TTPs 29 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\505762ca6aea854746866b01f75d1c345fe2a6b0af3c198be1b8a6b4c34f3b23.exe
    "C:\Users\Admin\AppData\Local\Temp\505762ca6aea854746866b01f75d1c345fe2a6b0af3c198be1b8a6b4c34f3b23.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4996
    • C:\Users\Admin\AppData\Local\Temp\505762ca6aea854746866b01f75d1c345fe2a6b0af3c198be1b8a6b4c34f3b23.exe
      71
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Checks computer location settings
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5092
      • C:\Users\Admin\giunao.exe
        "C:\Users\Admin\giunao.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4228
        • C:\Users\Admin\giunao.exe
          71
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • Maps connected drives based on registry
          • Drops autorun.inf file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\giunao.exe

    Filesize

    100KB

    MD5

    2622ccb71369d576c596ee6b63486f26

    SHA1

    37ee829acd4bf5c9097962c4d1d44c7242a4e791

    SHA256

    505762ca6aea854746866b01f75d1c345fe2a6b0af3c198be1b8a6b4c34f3b23

    SHA512

    b1286e04193460b63cf8a11085eb8287960ad8a69dfcfc6d26122637181a8d8d249fab4b6ed041f0738185c178fd015b53e380f083e138b4194047e8908f8ff9

  • C:\Users\Admin\giunao.exe

    Filesize

    100KB

    MD5

    2622ccb71369d576c596ee6b63486f26

    SHA1

    37ee829acd4bf5c9097962c4d1d44c7242a4e791

    SHA256

    505762ca6aea854746866b01f75d1c345fe2a6b0af3c198be1b8a6b4c34f3b23

    SHA512

    b1286e04193460b63cf8a11085eb8287960ad8a69dfcfc6d26122637181a8d8d249fab4b6ed041f0738185c178fd015b53e380f083e138b4194047e8908f8ff9

  • C:\Users\Admin\giunao.exe

    Filesize

    100KB

    MD5

    2622ccb71369d576c596ee6b63486f26

    SHA1

    37ee829acd4bf5c9097962c4d1d44c7242a4e791

    SHA256

    505762ca6aea854746866b01f75d1c345fe2a6b0af3c198be1b8a6b4c34f3b23

    SHA512

    b1286e04193460b63cf8a11085eb8287960ad8a69dfcfc6d26122637181a8d8d249fab4b6ed041f0738185c178fd015b53e380f083e138b4194047e8908f8ff9

  • memory/820-153-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/820-155-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/5092-135-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/5092-137-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/5092-140-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/5092-154-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB