Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    29/05/2026, 22:33

General

  • Target
    2026-05-29_59f1c8da8e48a111649c18ef76082f46_cryptolocker_elex.exe
  • Size 70KB
  • Sample260529-2gr78adt6k
  • SHA256 99038cbf99752b37318ca0431d9e0a3bc359a01edd747a5a522d015571b77333
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 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\2026-05-29_59f1c8da8e48a111649c18ef76082f46_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-29_59f1c8da8e48a111649c18ef76082f46_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3456
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5988

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        hasfj.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
        • Size 70KB
        • SHA256 b3beadef2eba5be6bf23395798ffba26615e9c6f4edf87ab510238966f33f3d0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3456-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/3456-1-0x0000000002FA0000-0x0000000002FA6000-memory.dmp

        memory/3456-2-0x0000000008000000-0x000000000800E000-memory.dmp

        memory/3456-3-0x0000000003250000-0x0000000003256000-memory.dmp

        memory/5988-17-0x0000000008000000-0x000000000800E000-memory.dmp

        memory/5988-19-0x0000000002320000-0x0000000002326000-memory.dmp

        memory/5988-25-0x0000000008000000-0x000000000800E000-memory.dmp