Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    30/10/2026, 03:51

General

  • Target
    2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe
  • Size 32KB
  • Sample261030-eexzcsg12x
  • SHA256 7dcce4af3d9c208450ae2e6f6744bbac226c668577776e458b7168ce32d6d036
  • MD5 SHA1 SHA512 SSDEEP TLSH
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).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5456
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Executes dropped EXE
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      PID:4988

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        hurok.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
        • Size 33KB
        • SHA256 242d1011f23a3ebc473b15945b4bc459cf686cfd9c9b6c271fadfe74612d828a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4988-19-0x0000000000590000-0x0000000000596000-memory.dmp

        memory/5456-0-0x0000000002040000-0x0000000002046000-memory.dmp

        memory/5456-1-0x0000000002040000-0x0000000002046000-memory.dmp

        memory/5456-2-0x0000000000400000-0x0000000000406000-memory.dmp