Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/09/2026, 10:32

General

  • Target
    2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe
  • Size 33KB
  • Sample260908-mk1ansxvbz
  • SHA256 af8c164e94d485448d0b53430691878e6bd1c6db0104a51b17ea966cc181bab2
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 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\2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-08_f303256ceabf0eb5900c84d33c0ff89d_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3024
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1332

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        lossy.exe

        • Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
        • Size 33KB
        • SHA256 b72b9bb38908367c908893029b73b19a278132b77d40b77175c7a4b38ea4512c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1332-17-0x0000000008000000-0x0000000008009000-memory.dmp

        memory/1332-20-0x0000000000630000-0x0000000000636000-memory.dmp

        memory/1332-19-0x0000000008000000-0x0000000008009000-memory.dmp

        memory/3024-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/3024-1-0x0000000000550000-0x0000000000556000-memory.dmp

        memory/3024-2-0x0000000008000000-0x0000000008009000-memory.dmp

        memory/3024-3-0x0000000000570000-0x0000000000576000-memory.dmp