Analysis

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

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/06/2026, 08:32

General

  • Target
    2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe
  • Size 36KB
  • Sample260604-kfbqeabv2s
  • SHA256 907d4722b5c55fa59f1cf20a3ee9bf287989c0363cef27c82a220048a123f577
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 1 IoCs
  • Custom signature
    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\2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2468
    • 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:4332

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 4592efa809257dd1da341279268b8de78eb3e585c09a62d99bfe69a0f620d97f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2468-0-0x0000000002140000-0x0000000002146000-memory.dmp

        memory/2468-1-0x0000000002140000-0x0000000002146000-memory.dmp

        memory/2468-2-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/4332-25-0x00000000022D0000-0x00000000022D6000-memory.dmp