Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/08/2026, 00:44

General

  • Target
    2026-08-01_55e4f9ddc41ae90c27a81cd4bb5bed4d_cryptolocker_elex.exe
  • Size 97KB
  • Sample260802-a3m2vabb29
  • SHA256 3bc67a451c207046ac35860203af3b44a080192be7d7654d618b35816f033293
  • 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).

  • 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\2026-08-01_55e4f9ddc41ae90c27a81cd4bb5bed4d_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-01_55e4f9ddc41ae90c27a81cd4bb5bed4d_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1076
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3392

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 97KB
        • SHA256 ae8a1dbe993973e178e6cce0e9cff145bbfb1338110915eb55d5c1ab763d74e7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1076-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

        memory/1076-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

        memory/1076-2-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/3392-19-0x0000000000590000-0x0000000000596000-memory.dmp