Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    28/05/2026, 08:53

General

  • Target
    2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe
  • Size 38KB
  • Sample260528-ktfarabs6k
  • SHA256 de1dba87b008673aaa84419a2a48030de71bca0be28747550b82464461b05fec
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 5 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\2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-28_eda5c2698f810468ca62f6d08a73d38b_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1944
    • 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:1624

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 38KB
        • SHA256 248a839cd21bb4b42071b84d7a0d4ea1f3ed86707c29ceb90beda94c631293cd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1624-18-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/1624-26-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/1944-0-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/1944-1-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/1944-2-0x0000000002E60000-0x0000000002E66000-memory.dmp

        memory/1944-3-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/1944-4-0x0000000003110000-0x0000000003116000-memory.dmp