Analysis

  • max time kernel
    93s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 05:53

General

  • Target
    2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe
  • Size 63KB
  • Sample240610-gltavsdf44
  • SHA256 cedf4153a2a8b53d3066c5fdff04ad86cd08c602e826631f4488e3c374e26e4c
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • 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\2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_88519d4e3c75aa1b6c0198a7055013c2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4728
    • 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:1248

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 63KB
        • SHA256 1c86f649e4d093d16b70edbb1898fb93fa39e7950fa132c11876252653342ab4
        • MD5 SHA1 SHA512 SSDEEP

        gewosik.exe

        • Path C:\Users\Admin\AppData\Local\Temp\gewosik.exe
        • Size 185B
        • SHA256 238e6f4a56d8c975934424598a7f6e2d3c4d7513feffaed5d620fc9b23e1e51b
        • MD5 SHA1 SHA512

        memory/1248-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

        memory/4728-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

        memory/4728-1-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/4728-8-0x0000000002D60000-0x0000000002D66000-memory.dmp