Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 15:42

General

  • Target
    2024-01-25_8d40ba89b33e329fb0ae3e9bbe3b00c3_cryptolocker.exe
  • Size 35KB
  • Sample240125-s5cm1aahaj
  • SHA256 2ebcf4f6960e5e8186c7310d9617a304dd67aa1e7d2fe022e14f81a8bf322889
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Kinsing

    Kinsing is a loader written in Golang.

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-25_8d40ba89b33e329fb0ae3e9bbe3b00c3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_8d40ba89b33e329fb0ae3e9bbe3b00c3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4012

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        gewos.exe

        • Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
        • Size 35KB
        • SHA256 821bf1101bb8f3e8ba67137be02a98a4d86460e54363fc650a42db588cebfc5a
        • MD5 SHA1 SHA512 SSDEEP

        memory/2004-0-0x0000000002180000-0x0000000002186000-memory.dmp

        memory/2004-1-0x0000000002180000-0x0000000002186000-memory.dmp

        memory/2004-2-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/4012-21-0x0000000000530000-0x0000000000536000-memory.dmp