Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2022, 20:29

General

  • Target

    64a44957c7183f10b87f37ed7de45661022643dd042d880642fe07f465506906.exe

  • Size

    192KB

  • MD5

    042db644c480b685a9ce56485528f650

  • SHA1

    d415b7ed3dfa548043882770daa0d47f702dd1fd

  • SHA256

    64a44957c7183f10b87f37ed7de45661022643dd042d880642fe07f465506906

  • SHA512

    af56356af45274cf4f9553e3bdc8fa3f8badd26a368ccc5b967d0f85cbbbf4a6359b35b9e2785fc3c5be03014f3890820d1bb9b11e7a686ceb158f132a886e1f

  • SSDEEP

    3072:WvZV4s1eQx755RCaFSoc98/yqz9Kf5L/SV5qK:G/jCaFSoc9kC5L/hK

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 29 IoCs
  • 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 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\64a44957c7183f10b87f37ed7de45661022643dd042d880642fe07f465506906.exe
    "C:\Users\Admin\AppData\Local\Temp\64a44957c7183f10b87f37ed7de45661022643dd042d880642fe07f465506906.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2376
    • C:\Users\Admin\kxkoux.exe
      "C:\Users\Admin\kxkoux.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:2180
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3256

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\kxkoux.exe

      Filesize

      192KB

      MD5

      042db644c480b685a9ce56485528f650

      SHA1

      d415b7ed3dfa548043882770daa0d47f702dd1fd

      SHA256

      64a44957c7183f10b87f37ed7de45661022643dd042d880642fe07f465506906

      SHA512

      af56356af45274cf4f9553e3bdc8fa3f8badd26a368ccc5b967d0f85cbbbf4a6359b35b9e2785fc3c5be03014f3890820d1bb9b11e7a686ceb158f132a886e1f

    • C:\Users\Admin\kxkoux.exe

      Filesize

      192KB

      MD5

      042db644c480b685a9ce56485528f650

      SHA1

      d415b7ed3dfa548043882770daa0d47f702dd1fd

      SHA256

      64a44957c7183f10b87f37ed7de45661022643dd042d880642fe07f465506906

      SHA512

      af56356af45274cf4f9553e3bdc8fa3f8badd26a368ccc5b967d0f85cbbbf4a6359b35b9e2785fc3c5be03014f3890820d1bb9b11e7a686ceb158f132a886e1f