Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    16/05/2026, 08:22

General

  • Target
    2026-05-16_118afd98151a2bc9020320e04c13a9af_cryptolocker_elex.exe
  • Size 49KB
  • Sample260516-j9vvpse15n
  • SHA256 4c4c1f01d88bfaf00e9a420b105533753b38bc4a7a2c0d7de2d0a86597332d40
  • 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\2026-05-16_118afd98151a2bc9020320e04c13a9af_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-16_118afd98151a2bc9020320e04c13a9af_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3900
    • 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:4516

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 49KB
        • SHA256 e61115264347e18a491ac2c149754a48e3a2595831bf8a2371f522db7e019fac
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3900-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/3900-1-0x0000000002FA0000-0x0000000002FA6000-memory.dmp

        memory/3900-2-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/3900-3-0x0000000003250000-0x0000000003256000-memory.dmp

        memory/4516-17-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/4516-19-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/4516-20-0x0000000003110000-0x0000000003116000-memory.dmp