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Analysis

  • max time kernel
    321s
  • max time network
    335s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/12/2022, 00:29

General

  • Target

    6468e9fb8c55d35ba2e5d932cd5126da27551c3bfb8896b215cedbba186807d2.exe

  • Size

    280KB

  • MD5

    a6593f29ef7b4953dc43b50f1e3c145c

  • SHA1

    669be91b5694caa745c49c3efbc020aa4d11b8c2

  • SHA256

    6468e9fb8c55d35ba2e5d932cd5126da27551c3bfb8896b215cedbba186807d2

  • SHA512

    e8b02cd600a6442f86c5bade399c63aaa6ea85e568b805682d1aa4889df492bec0d5f774dbb680f9616315df0b8e4f5db8a60b295a6b73a99ab4d9ba530b0a47

  • SSDEEP

    6144:9lqk0GazmqAJHOlb4nDlClsfbLEaEAioyLwKds23efHXkD5D5QSqTsHwOjD:6kdazmqAJHOlb4nDYlibLEaEAioyLwKr

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 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 20 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 50 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6468e9fb8c55d35ba2e5d932cd5126da27551c3bfb8896b215cedbba186807d2.exe
    "C:\Users\Admin\AppData\Local\Temp\6468e9fb8c55d35ba2e5d932cd5126da27551c3bfb8896b215cedbba186807d2.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:776
    • C:\Users\Admin\kueuteh.exe
      "C:\Users\Admin\kueuteh.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3776

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\kueuteh.exe

    Filesize

    280KB

    MD5

    a6593f29ef7b4953dc43b50f1e3c145c

    SHA1

    669be91b5694caa745c49c3efbc020aa4d11b8c2

    SHA256

    6468e9fb8c55d35ba2e5d932cd5126da27551c3bfb8896b215cedbba186807d2

    SHA512

    e8b02cd600a6442f86c5bade399c63aaa6ea85e568b805682d1aa4889df492bec0d5f774dbb680f9616315df0b8e4f5db8a60b295a6b73a99ab4d9ba530b0a47

  • C:\Users\Admin\kueuteh.exe

    Filesize

    280KB

    MD5

    a6593f29ef7b4953dc43b50f1e3c145c

    SHA1

    669be91b5694caa745c49c3efbc020aa4d11b8c2

    SHA256

    6468e9fb8c55d35ba2e5d932cd5126da27551c3bfb8896b215cedbba186807d2

    SHA512

    e8b02cd600a6442f86c5bade399c63aaa6ea85e568b805682d1aa4889df492bec0d5f774dbb680f9616315df0b8e4f5db8a60b295a6b73a99ab4d9ba530b0a47