Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/06/2024, 04:29

General

  • Target
    2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe
  • Size 44KB
  • Sample240613-e399laxgmp
  • SHA256 7c72b66856bffff22064123902951cc51b7ec954d2cf3ddc34bbb52989de3133
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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\2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_7fe0192c4c4fec779a27b360aeae2e0c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Executes dropped EXE
      PID:3012

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        hurok.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
        • Size 45KB
        • SHA256 fd765964064341a9cc85c54f5c06e5fbc281d5f143f6b78fc2fe6d468b043cf5
        • MD5 SHA1 SHA512 SSDEEP

        memory/2244-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/2244-1-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/2244-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/3012-25-0x0000000000490000-0x0000000000496000-memory.dmp