Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    31/05/2026, 02:40

General

  • Target
    2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe
  • Size 36KB
  • Sample260531-c53anagy71
  • SHA256 eb57aa1cb16dea2ee3237a3f7e899f75098930d73dc2207b60ef64d261465ac0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • 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\2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5444
    • 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:2492

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 36KB
        • SHA256 00ba00ed5d06498f1e93362755c81fd1fe2c15f1695c10a66474c26475ea40d4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2492-25-0x0000000000590000-0x0000000000596000-memory.dmp

        memory/5444-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

        memory/5444-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

        memory/5444-2-0x0000000000400000-0x0000000000406000-memory.dmp