Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/08/2026, 23:47

General

  • Target
    2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe
  • Size 42KB
  • Sample260809-3sx4aaxeke
  • SHA256 4fade02a61eb3218e7633e6cdc8e8e3c8c9e53a8c8799a2f242fa9f9685ef7b7
  • 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\2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5820
    • 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:4704

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 42KB
        • SHA256 8453bc1422296a3edbafdc208847a69725e0edf99a0815720bd432b25e63634f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4704-17-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/4704-19-0x0000000003010000-0x0000000003016000-memory.dmp

        memory/4704-25-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/5820-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/5820-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

        memory/5820-2-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/5820-3-0x0000000003150000-0x0000000003156000-memory.dmp